What is up with my '85 Corvette

chevrolet
corvette

#1

I placed my Corvette with a consignment seller this summer. When he had no action, I took the car back but…battery dead. Fully recharged it, car started immediately (first time in 2-months) but then died and will not restart. My ace mechanic has replaced fuel pump, distributer, but no fire. Indication is weak/no signal at he injectors. Could this be residual Theft Prevention system? I had that fail years ago and I pulled the module and the car has done fine for 4-years, until now.

What do we have here???


#2

What you described is a classic symptom of a fuel kill switch operating. You start it, and it runs until the fuel in the lines is used up.


#3

And that would be where? "Cause if it’s hardware, I never put it there. If it is part of the infernal security system, then I really need to know.


#4

1981-1988 were the dark years for Detroit…Ignition and fuel systems were in a state of constant change…The emissions controls were add-on junk…

Is there spark getting to the plugs? Will a shot of ether (starting fluid) get it to run momentarily?


#5

The VATS system was first on the 1985 Vette. The resistor in the key could be out of tolerance causing the no start condition.


#6

First thing I’d do is what @Caddyman suggests: try some starting fluid. If nothing, then it’s ignition/key/immobilizer. If it tries to start then fuel injection issues…


#7

Done all that.

There is weak spark and weak pulse to the injectors. I had the Security system do a meltdown 2 yrs ago and pulled the module which cured the issue. Battery went fully dead before I put a slow charge on it, overnight, and it started immediately – but only ran for about 15 sec, and just died. Nothing else sense and no common cures work (fuel pump, distributer)