Hello All,

Just a little follow up on a post a while back about my digital dash problem. See the post below. I did everything to figure it out including removing the dash etc. I could also never get that car to idle right. No codes etc. I started checking the ignition system, new cap, rotor, wires, plugs. Then I got to the coil. The tach wire on the coil that has a plug blade was shorting out on the steel frame of the coil.The funny thing is that my tach was working ok. But this was the problem of why my dash was acting up. Something that the GK manual did not mention.Thanks to all that tried to help out.
PS I also installed a new rack & pinion, new tie rod ends, power steering hoses etc. My steering is awesome. Like a brand new car. Take care.

Joe Flash


Hello All,

I am having problems with my dash cluster on my 86 vette. Actually it is not the cluster because I switched it with my 87 and it does the same thing. I also have the Gordon Killbrew Digital cluster troubleshooting book but I am at my witts end trying to troubleshoot this problem. My instant fuel and average fuel mileage in incorrect and the upshift light is flashing. The fuel indicators constantly change and are not correct. Says in the book that the problem can be the dash cluster, ECM or Prom.
I replaced the ECM, Prom and had the dash cluster rebuilt. There is a bi-lateral wire that sends info from the ECM to the cluster. I checked the plugs and did a wiggle test, but I did not totally check the bi-lateral wire thru the whole wiring harness. I also checked the grounds on the back of the engine and they are good. I think it may be a bad wire, but I just cant figure it out.I am not putting back the carpet knee panels until I figure out this problem. Its a real pain in the a.. removing those panels. If anyone can give me any ideas, I sure would appreciate it. Thanks.


Joe Flash

Any loping idle? Just an electrical problem?

Vacuum leaks are tough to find, and will throw off EVERYTHING...

Quote:

Congrats! Those shorts can be a PIA to track down! Glad you got it sorted out. Did you use the batee site for a guideline?

Matthew

Hey Flashman, how much work is it to replace the rack? I've been contemplating rebuilding my steering system as well ...

Hello All,

Its been a while since I have posted on here. I replaced all the vacuum lines in the engine bay. My idle is not smooth because of the cam in the engine. But I got it to idle pretty good. I feel it needs to idle higher than a 700 rpm.

I have viewed the Batee site and it is very informative. But I have a copy of the Gordon Killbrew electronics book and its very good.

The rack and pinion was not that bad to replace. I had to take the fluid lines from my old unit and put them on the new one. I figured while I was doing it, I would replace the tie rod ends. I adjusted the toe in toe out and the steering wheel is straight and so is the car. Talk to you all soon.


Joe Flash

Welcome back Joe!

Welcome back - did you get your idle sorted out? You can set the base idle higher if you want to try to smooth it out some. Let me know if you need the procedure.

Matthew