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Eagle223usa Strange C4 problem...
Guru with Eyes of Steel
God's country, Pa
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So I fired up the '95 to go see the chiropractor. It is the second time she has been out this year. About halfway there, check engine light comes on. I'm thinking great. The car runs fine and I get there with no problem. I jump back in to head on home, check engine light is off. I'm like, cool. I'm coming back across the West End bridge and the light comes back on and she bucks a little in first gear. I'm in rush hour traffic so this was a pain. I'm not concerned because I have my scan tool at home. I finally get the light at the bridge and 2 open lanes in front of me! The light turns green and bam, traction control off and I nail it. 1st, 2nd, 3rd, 4th, Zooom! I look down at the speedo, just to make sure I'm doing a felony and the speedo says Zero. I'm like, Damn. It's no fun if you don't know your going 110 mph. I got home, plugged in the scan tool and it won't even turn on. I tried it on my truck and it works fine. The car seems to run fine just no speedo, and no link or even power with the scan tool. Where do I start. Any one have this problem before? Thanks.
Posted on: 2016/6/10 22:20
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BrianCunningham Re: Strange C4 problem...
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Boston, MA for the most part :)
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What scan tool do you have

The '95's have an OBDII connector, but they run OBD1

You can make the codes come up on the dash,
but if your dash it out..
Posted on: 2016/6/11 0:37
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Matatk Re: Strange C4 problem...
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Speedo reading zero could be a bad vehicle speed sensor (VSS) in the transmission or the wiring of said sensor. That ultimately feeds the CCM which feeds the dash. What raises a red flag is you don't have any ALDL data which also comes from the CCM. Check the fuses first, and try the manual method for pulling codes and then get back to us.
Posted on: 2016/6/11 3:02
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BrianCunningham Re: Strange C4 problem...
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Posted on: 2016/6/11 16:03
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Polo Green 95 LT1 6-spd http://mysite.verizon.net/vzevcp74/
383 LT1/Vortech Supercharger/AFR heads/Rod end suspension/Penske-Hardbar dual rate coilovers/Wilwood 6pot brakes
NCCC Governor: http://BayStateCorvetteClub.com
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Eagle223usa Re: Strange C4 problem...
Guru with Eyes of Steel
God's country, Pa
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I'm pretty sure I have used my scan tool on my Corvette before. At least I though I did...When ya get to be my age, well.. Can anyone point me in the direction to find the manual code recovery process? Thanks again guys.
Posted on: 2016/6/11 16:07
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Eagle223usa Re: Strange C4 problem...
Guru with Eyes of Steel
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Found it, in the stickys, sorry still on my first cup of coffee.
Posted on: 2016/6/11 16:20
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Eagle223usa Re: Strange C4 problem...
Guru with Eyes of Steel
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"h24" VSS circuit.
Posted on: 2016/6/11 20:31
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Matatk Re: Strange C4 problem...
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Check the VSS on the side of the transmission as well as the plug and wiring. You can carefully pull the VSS and spin it with a drill to verify function.
Posted on: 2016/6/11 20:34
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1989 Corvette...RIP
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Eagle223usa Re: Strange C4 problem...
Guru with Eyes of Steel
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Quote:

BrianCunningham wrote:
here's how to bring up the codes

http://s242.photobucket.com/user/swif ... ccm%20codes?sort=3&page=1


Thanks Brother Cunningham, My eyes were not al the way open this morning. This is the best Corvette site ever. I should hang out here more.
Posted on: 2016/6/11 20:58
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Eagle223usa Re: Strange C4 problem...
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Quote:

Matatk wrote:
Check the VSS on the side of the transmission as well as the plug and wiring. You can carefully pull the VSS and spin it with a drill to verify function.


Thank you,
Posted on: 2016/6/11 23:09
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bogus Re: Strange C4 problem...
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San Pedro, CA
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Rockauto has the VSS for under $50.00 and connectors for about $25 and under.

Posted on: 2016/6/12 5:50
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