| Re: 85 TPI flooding out running very rich.please help |
Subject: Re: 85 TPI flooding out running very rich.please help by bogus on 2010/12/17 21:38:59 You are running into the problem of all problems with early C4s. The wiring harness is garbage. The wires will crack, shrink, short, break, chaffe... you name it. The next step is to start isolating potential problems with the harness. You will need to use the service manual and start toning out various circuits. Take the time to learn the manuals a bit, too. Don't be impatient with this process. Take your time, one circuit at a time and fix it and move to the next. The payoff will be a good running car at the end, it just may take some time to get there. Review the schematics; review the troubleshooting. Start with the schematic and using as many different coloured highlighters as you can find, trace the wires you are first concerned with. I would consider getting several copies made of the schematic pages so you can isolate circuits. I must reinforce this reality: THERE MAY BE NO EASY FIX!!! It will require a step-by-step, methodical approach to this. A guess won't do it. When these harnesses fail, you can easily get the case of ground "A" shorting out circuit "2", circuit "1", which uses ground "A" could throw the code. Also be ready to replace the various bad connector ends. GM and Rock Auto both sell them at reasonable prices. Unfortunetly, there isn't an aftermarket source for a new harness...and you wouldn't want to do that. The engine harness goes into the firewall and integrates with the IP harness. This means there is no quick disconnect between the two. Pin by pin... and the disassembly of the dash. |
