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Hello All; My C-4 has been running great until today. It sat in my garage for 5 days. Upon trying to start it today it fought a little to start, then started and ran rough. When I tried to drive off it backfired and died. It then started right up again but every time I tried to step on the...

My left headlight assembly opens fully but then slowly rolls back to partially closed whenever I run over a rough road. I believe that the gears are worn out because if I dont help the assembly to close the motor will not stop running. Can anyone tell me if I can get a replacement motor assembly...

This past winter I installed 8 new injectors which I purchased from Fuel Injector Connection. My 89 runs like a BEAR once it is warmed up, however it has a hard cold start condition. When I try to start it from cold in the morning , it seems to crank forever before it fires up. When it finally...

The Delco/Bose radio and cassette player in my c-4 is finally giving out. Can anyone suggest a good replacement or is it possible to have this one rebuilt? Does anybody have a good one to sell?

Does anyone have a suggestion on how to service the LTPWS (low tire pressure warning system)? The service LTPWS light comes on from time to time. I can't find anything about it in my service manual.

I just finished installing new injectors and valve cover gaskets as well as moved the mat sensor to the front air box. The job went well and my car does not quit on me when it comes up to running temp anymore. The only slight problem i have is an occasional backfire when i hit the fuel and the...

My current otc scantool will not work with my 1989 c-4 vette. It is obd2 and can't be made to work on obd1 vehicles. I have been told that i need one that is obd1 compliant. My vette is the only car i have that requires an obd1 tool. Can anyone suggest a scantool that will work without costing a...

Whenever i post a new thread there is a small green checkmark on the same line near the right of the page. If I scroll over to it, it says I am subscribed to it. What does this mean and how do I unsubscribe if necessary???

Hello guys; are there any downloadable charts out there that show the torque specs needed to reassemble the fuel rail bolts and all runner and plenum bolts??? Thank You :thumb

Does anyone out there know of a good, high flow replacement air filter assembly that will work on my c4??? My original air box is broken in a couple of different places and has to go.;help

I was just checking out my upcoming injector replacement job and noticed that the tab that holds the outer air filter cover is broken. Does anyone know of a good source for getting a new lower filter housing???

First let me say that all of you guys are great. You have all been so helpful getting me ready to do this job of replacing my injectors. My question now is should I replace the FPR valve as well while I am in there??? And should I be looking at anything else??? Thanks again to all of you.:upthumbs

I just tried testing the resistance readings on all injectors on my 89 c4 and found that three of them read 6.1 ohms, two read 10.7, one reads 11.7 ohms and two read 16.9 ohms. Is this possibly the reason that it won't start when it is hot??? If the answer is yes, is there a good publication out...

my 1989 c4 has a 5.7 litre in it and it starts great when cold and will run for as long and as fast as i dare to run it. However once i shut it off and try to restart it all it does is backfire a couple of times then it starts but one by one the cylinders shut off until it dies. Then it wont...