espop125

Hi all I have a 1986 corvette with no injector pulse. After testing several things and then rechecking them again as per factory service manual it leads to a bad ECU. Now for the issue. Nobody has any for sale and I need to get recommendations on a rebuild service. I don’t know which ones I search are reputable. Any help would be appreciated. Thanks.

Prime Target

Try Mirrock Corvette for a used one first. Looks they have an 86 coupe they are parting out...

https://mirrockcorvette.com/

espop125

Thanks I am sending email asap.

1985 Vette

1986-1989 Corvettes used the same ECM, so you don't have to just look for an 86. You might check our local AutoZone or Oreilly. I was able to get a rebuilt one from Oreilly a few years ago.

MatthewMiller

SIA Electronics in IL seems to have a good track record for testing and repairing ECMs. If it's the ECM, it may just be the injector driver on the board that's bad, and I bet that can be fixed.

espop125

Thanks, I have been looking for all years still no luck.

espop125

I will call sia electronics. Thanks

johnfin

So is the 85 ECU different from the 86 and if so how do you know you are getting the right one from a parts store like rockauto or...is it just the eprom that makes it work for the car. ie the circuit boards are the same for all early injected C4's?

RWDsmoke

You don't say where you are from. I have a couple of spares. If you are in the San Antonio area I would let you try before you buy.

espop125

85 is different from 86. To be sure get the part number off if your computer but it is well documented on the internet what the part number are for all different years.

1985 Vette

The ECM is another one year only part for 1985.

jazfe

Jumping on RWDsmoke bandwagon. I have a spare for an 86 you can try if you are near Portland OR

Zip Corvettes

When you are cranking the engine over, is the tach registering anything?

espop125

I found a reman ECU at oreillys for $150. Now I have injector pulse and car starts again.