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| istter1 | Check engine light | ||
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Elite Guru
 
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41 34 33 55 Light finally stayed on Looks like time to check wires and connections and adjustments runs good minor trouble at start up in morning idle a little high |
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Posted on: 2014/9/28 21:02
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| Schrade | Re: Check engine light | ||
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DTC's often defer to a lower # DTC.
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Posted on: 2014/9/28 21:11
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| istter1 | Re: Check engine light | ||
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Quote:
Translation of D T C Ready to look stupid again |
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Posted on: 2014/9/29 0:05
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| Matatk | Re: Check engine light | ||
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Webmaster
 
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DTC = diagnostic trouble code
http://www.corvettebuyers.com/c4vettes/ecm.htm So.... 33 MAF (I think high) 34 MAF (I think low) 41 cylinder select circuit 42 EST circuit 55 engine lean Have you done any work lately? I am on my phone, I will have to go over these in depth later. |
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Posted on: 2014/9/29 2:56
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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| istter1 | Re: Check engine light | ||
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Quote:
Using my Autoxray for codes. This started last time my son borrowed my vet. Ecm is 6 months old. Haven't had a chance to check it Great cheat sheet. Will have time tomorrow. Wanted to start on exhaust. Thanks |
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Posted on: 2014/9/29 4:15
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| Matatk | Re: Check engine light | ||
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Webmaster
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I know *sometimes* the aftermarket scanners give false codes.
Rescan it with a paperclip and report back. |
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Posted on: 2014/9/29 11:38
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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| istter1 | Re: Check engine light | ||
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came back the same
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Posted on: 2014/9/29 13:25
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| Woodstock | Re: Check engine light | ||
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Senior Guru
 
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What's the model year?
L98 I would think ECM, LT1 rather defective Opti-Spark, unless you got a weak battery. |
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Posted on: 2014/9/29 13:30
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| bogus | Re: Check engine light | ||
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Grand Imperial Pooh-Bah
 
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check the MAF... once it starts throwing codes, all bets are off.
Also, make sure the chips are properly seated in their sockets. |
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Posted on: 2014/9/29 21:04
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| istter1 | Re: Check engine light | ||
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Quote:
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Posted on: 2014/9/29 23:47
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| bogus | Re: Check engine light | ||
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Grand Imperial Pooh-Bah
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Hope it's something simple!!!
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Posted on: 2014/9/30 1:09
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The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me |
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| istter1 | Re: Check engine light | ||
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Elite Guru
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Quote:
Didn't want to crank appears had a weak battery. Quick charge fires up. Checked MAF sensor cleaned it up. Would idle at 700 and after a few idled at 1400. Before clean MAF. Checked for air leaks on Super Ram. May be hose from Throttle body to valve covers or I may get to use my new Laser cut gaskets. New there was a reason I ordered 2 sets and was thing about buying two more sets. They sure were cheap. Thank Scott will be ordering more soon. Steve |
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Posted on: 2014/9/30 2:02
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| bogus | Re: Check engine light | ||
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Grand Imperial Pooh-Bah
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a weak battery will add to this.
Make sure the connections on the battery are good, and that the ground strap is good. Also, check the ground points under the car... same with the starter... I know your engine is fresh, so it should be dry, but if there is a leak, it will raise hell with things. |
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Posted on: 2014/9/30 4:17
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| istter1 | Re: Check engine light | ||
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thanks Andy
more fun when I get off work I enjoy this |
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Posted on: 2014/9/30 13:24
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| istter1 | Re: Check engine light | ||
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Took care of air leaks.
After about 8-10 minutes idle from 800 creeps up to 1100. If can remember you check MAF with volte meter Will check tomorrow. Company holding me up |
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Posted on: 2014/10/1 2:12
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| bogus | Re: Check engine light | ||
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Grand Imperial Pooh-Bah
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idle creep... still have air leaks... get some throttle body cleaner and spray around all the gaskets. Idle changes, leak found.
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Posted on: 2014/10/1 17:23
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| istter1 | Re: Check engine light | ||
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Quote:
I am going to pull the top of the super ram and tighten the bolts from the top. I picked up two cans yesterday. I am glad I slotted the top of the bolts it will be easier to get to the inner ones. Lots of places to look Attach file:  20131124_090551.jpeg (274.70 KB) |
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Posted on: 2014/10/2 3:21
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| istter1 | Re: Check engine light | ||
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Found about 5 more places idle stays constant now. Will check computer tomorrow if I get out of the school carnival early. Code light still on. haven't rechecked codes yet. Maybe Saturday when Stacy and I get back from the dog shoe. |
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Posted on: 2014/10/3 1:10
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Only I can change my life. No one can do it for me. Carol Burnett |
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| Matatk | Re: Check engine light | ||
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Reset them now that the leaks are fixed and see how it runs. You can still check the grounds and battery voltage for S&Gs.
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Posted on: 2014/10/3 2:17
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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| istter1 | Re: Check engine light | ||
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ran scan no codes. Disconnected battery to reset light. Will test drive on way to work tomorrow. |
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Posted on: 2014/10/3 3:11
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| istter1 | Re: Check engine light | ||
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Ran great idle constant. no codes.
light stays on. battery disconnected 3 hours. |
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Posted on: 2014/10/4 2:03
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| bogus | Re: Check engine light | ||
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Grand Imperial Pooh-Bah
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Lemme get this... no codes, but the light is on?
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Posted on: 2014/10/4 2:21
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The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me |
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| Matatk | Re: Check engine light | ||
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Are you using the scanner or paperclip to determine no codes?
Can you scan it with a laptop and winaldl while running to see what is going on? |
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Posted on: 2014/10/4 3:33
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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| istter1 | Re: Check engine light | ||
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Quote:
That was my next tool. Sure glad I started to learn about data logging and bought all the cables. |
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Posted on: 2014/10/4 5:39
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Only I can change my life. No one can do it for me. Carol Burnett |
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| istter1 | Re: Check engine light | ||
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Quote:
That was my next tool. Sure glad I started to learn about data logging and bought all the cables from Moates Attach file:  IMG_20141003_224823.jpg (153.07 KB) |
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Posted on: 2014/10/4 5:44
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Only I can change my life. No one can do it for me. Carol Burnett |
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| istter1 | Re: Check engine light | ||
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checking tuner pro before testing and noticed an up date. it erased all my info.
trying to remember where I got all my info for the programs I had a great dash board/ will have it going tomorrow I hope |
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Posted on: 2014/10/5 3:23
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Only I can change my life. No one can do it for me. Carol Burnett |
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| istter1 | Re: Check engine light | ||
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trouble finding tools and not emulating open doc to see where I am stuck
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Posted on: 2014/10/6 1:45
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Only I can change my life. No one can do it for me. Carol Burnett |
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problem.docx| Matatk | Re: Check engine light | ||
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Webmaster
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I'm on my phone....did you get it to connect? Are you on the right com port?
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Posted on: 2014/10/6 18:33
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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| istter1 | Re: Check engine light | ||
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Still trying to get it recognize and emulate from com 3. it says it is but not doing so . Had this problem 2 years ago. working on it later tonight. Too many flies out while the sun is out. That time of year |
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Posted on: 2014/10/7 1:13
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Only I can change my life. No one can do it for me. Carol Burnett |
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| istter1 | Re: Check engine light | ||
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Found a thread I used from gear head that worked before .
should work on fixing the problem Cable Installation to TunerPro RT Download the newest TunerPro RT software from this link. http://www.tunerpro.net/downloadApp.htm Plug your cable into laptop, no need for vehicle, and go to Control Panel, Device Manager, find the com port number and check driver. Should be: Driver FTDI Date 4/10/2012 Version 2.08.14 has been working for all. 2.8.24.0 has worked for a lot. Anything higher could have issues!!! If you'd like to read up on it check this post and thread that started the diagnostics to find the issue with drivers. http://www.gearhead-efi.com/Fuel-Inj...ll=1#post26827 Do the same for the USB Serial Converter. Open TunerPro RT and go to Tools, Preferences, Data Acquisisition/Emulation, Choose Use Plug in, configure plug in and make sure it is on the correct Comm port, Test for Valid Interface using settings... with cable plugged in. So with cable plugged in you found it in device manager as Com port 3, drivers are correct, TunerPro is set to Comm 3 and tests good? Don't worry it does not test good connected to vehicle. With TunerPro open click View, Toolbars and check them all, these icons are easier to learn then all the others under like Acquisition, Tools etc... Click Acquisition Load Definition File and choose your ADX for data looging. Connect cable to vehicle, vehicle running, TunerPro running and Acquisition Start/Stop Data scan or click on the 2 arrows icon up top, also click on the folder icon or Acquisition Show Data Lists and data should show... this is how I do it and then click record, when you stop recording it will prompt you to save the file with a name. *LAST RESORT BUT NOT DANGEROUS!* Or uninstall all USB in device manager and restart, let it install what's on laptop, then first thing to plug in is cable and make sure the above drivers are installed. *End last resort for drivers* |
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Posted on: 2014/10/7 1:43
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Only I can change my life. No one can do it for me. Carol Burnett |
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| Matatk | Re: Check engine light | ||
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Ok, if that doesn't work remember that there are sometimes other COM ports. When I use tuner pro, it uses one com port for my cable and a different com port for my chip burner. So you might try switching com ports.
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Posted on: 2014/10/7 11:34
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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| istter1 | Re: Check engine light | ||
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Thanks for info
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Posted on: 2014/10/7 13:13
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Only I can change my life. No one can do it for me. Carol Burnett |
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| Schrade | Re: Check engine light | ||
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Check here:
DataMaster; Sync'ing w/ ECM Might have to scroll a few posts, but I bet the settings (perhaps with identical or comparable names) will be the same, and get you live data... edit: SOMEone keeps F*U*C*K*I*N*G with my sig-links @ Z boards! They've generated 100K hits, and SOMEone doesn't like them, since I'm not a paying member perhaps??? 2nd ed.: Link fixed [AGAIN] istter - probably a little help there. |
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Posted on: 2014/10/7 17:24
Edited by Schrade on 2014/10/7 17:41:58 Edited by Schrade on 2014/10/7 18:03:19 |
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LT5, Marc Haibeck ECM module, AUTOMATIC!!!
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| istter1 | Re: Check engine light | ||
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Elite Guru
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Tunerpro up and working. Appears erratic fluxatation from MAF sensor. Replaced MAF didn't have time to try and reset computer ran great idle great. Will try to reset tomorrow and use tunerpro and compare.
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Posted on: 2014/10/9 3:55
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Only I can change my life. No one can do it for me. Carol Burnett |
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| istter1 | Re: Check engine light | ||
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Well computer ok had spare. Prom ok plugs fine . New MFA. Light on scan no codes. What the hell. Will be fun weekend. Hope to have time.
Attach file: IMG_20141009_164600.jpg (128.29 KB) |
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Posted on: 2014/10/10 4:09
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Only I can change my life. No one can do it for me. Carol Burnett |
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| istter1 | Re: Check engine light | ||
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Using tunerpro and scanner looks like throttle position is too low. Will work on that tomorrow.
Will try for what I had before in picture. Attach file: 20131224_203632.jpeg (228.02 KB) |
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Posted on: 2014/10/10 4:34
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Only I can change my life. No one can do it for me. Carol Burnett |
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| Matatk | Re: Check engine light | ||
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I don't know why your light us still on. Weird. You want tps .54-.56.
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Posted on: 2014/10/10 13:35
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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| Schrade | Re: Check engine light | ||
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Elite Guru
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Matt beat me to it...
Maybe check for smooth impedance of pot in TPS too. Got some snappics of that somewhere here... Maybe MAF filament is fouled? Do you do K&N up front? Too much oil can foul the filament. http://www.corvetteforum.guru/modules ... e=&topic_id=18993&forum=1 Never mind my guesswork notes on TPS function; don't know much on it. |
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Posted on: 2014/10/10 14:32
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LT5, Marc Haibeck ECM module, AUTOMATIC!!!
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| Matatk | Re: Check engine light | ||
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I have never heard of the dash light staying on with no codes.
To make sure we are on the same page, it is the "service engine soon" light, right?  |
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Posted on: 2014/10/10 18:09
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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| istter1 | Re: Check engine light | ||
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Have a hell of a time setting the tps. Will get it done today.
Attach file: IMG_20141010_203403.jpg (86.99 KB) |
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Posted on: 2014/10/11 16:06
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Only I can change my life. No one can do it for me. Carol Burnett |
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| istter1 | Re: Check engine light | ||
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TPS set. check codes Map sensor hose not connecter. Find and repair that. Check codes 19 comes fuel pump voltage is high. Gona do some research on that now. does it ever end.
I am calling on my close friend to come over after football to help me/ Attach file: IMG_20141011_105810.jpg (122.02 KB) 3 stooges play football.jpg (31.99 KB) |
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Posted on: 2014/10/11 17:40
Edited by istter1 on 2014/10/11 18:06:50 |
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Only I can change my life. No one can do it for me. Carol Burnett |
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| istter1 | Re: Check engine light | ||
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ok forget that one
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Posted on: 2014/10/11 21:36
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Only I can change my life. No one can do it for me. Carol Burnett |
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| istter1 | Re: Check engine light | ||
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ok out of wine done for the day. Will try again tomorrow. I not done by Monday taking it to the shop. Really feeling stupid.
Attach file: bth_red-dumb-ass.jpg (9.48 KB) |
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Posted on: 2014/10/11 23:07
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Only I can change my life. No one can do it for me. Carol Burnett |
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| istter1 | Re: Check engine light | ||
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Not certain if TPS has a problem will try this next.
Un able to get consistent readings. I believe I have a life time warranty on TPS My Mechanic wants to go by by. http://www.corvetteforum.guru/modules ... e=&topic_id=18993&forum=1 Attach file: IMG_20141012_182219.jpg (96.04 KB) |
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Posted on: 2014/10/13 1:51
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Only I can change my life. No one can do it for me. Carol Burnett |
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| Matatk | Re: Check engine light | ||
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Quote:
There is no code 19. Fuel pump codes are 53/54 on our cars. I don't think your scan tool is reading correctly, like I mentioned earlier in the posts. Did you get the TPS set? Not sure why it's so much trouble. Just lightly unscrew the bolts on the side of the throttle body and gently tap it either direction to get it in range. |
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Posted on: 2014/10/13 12:12
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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| istter1 | Re: Check engine light | ||
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Using paper clip. TPS good ground . I have done this many times. No idea why. Maybe gremlins Thanks Steve |
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Posted on: 2014/10/14 2:02
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Only I can change my life. No one can do it for me. Carol Burnett |
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| Matatk | Re: Check engine light | ||
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It can be difficult sometimes to use the voltmeter and set the tps because you almost need 3 hands. I would recommend hooking up the laptop with datamaster, setting it on top of the intake, and watching the values as you adjust it. Otherwise use backprobe pins if you have them, but I doubt you do, which is why I recommended the laptop.
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Posted on: 2014/10/14 2:05
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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| istter1 | Re: Check engine light | ||
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Quote:
What is so irritating is I have set the TPS on many vehicles and for some reason May be the meter never had a problem with it before .I have never used Data Master to do this. Looks like this will be the first time Thanks for the advice What you see in pictures is what is on this corvette. Set it the first try without a problem using multimeter. TPS tool from a friend will also be Friday. Attach file: BBK-1544_xl.jpg (152.08 KB) 20140115_153627.jpeg (263.04 KB) 20140118_120331.jpeg (193.63 KB) 20140118_204343.jpeg (298.57 KB) tool.jpg (13.18 KB) |
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Posted on: 2014/10/14 2:49
Edited by istter1 on 2014/10/14 3:06:33 |
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Only I can change my life. No one can do it for me. Carol Burnett |
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| Woodstock | Re: Check engine light | ||
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Senior Guru
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Ìf the TPS is installed like pictured, you've got a wrong set up! Zhe TPS link is currently above the hook but it belongs below.
Attach file: throttle.jpg (28.92 KB) |
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Posted on: 2014/10/14 13:29
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| Matatk | Re: Check engine light | ||
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Good catch, Axel. The tps should move with the throttle body blades. Move the blades forward using the linkage on the opposite side and see if the tps changes accordingly. Should run from .54v with blades closed to approximately 4.5v with blades open (wot).
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Posted on: 2014/10/14 15:59
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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