Hello,
I'm new to the sight,read alot of the post and have learned alot of good information. But I have a question about my 87 Iroc 305 tbi (yes tbi). I got the car about a month ago, the people before me had added a push button starter, the car would not start with the key. (The key has the chip in it.) The starter quit working,so I changed it. Now I have no power to the fuel pump or injectors, I checked fuses,relays, wires exc. Could the vat keep power form being supplied to injection and fuel pump? I have read about the vat bypass, and I am going to order a new chip for the ecm, I just want to know if this would fix the problem. I'm sure that I have left out some information,but maybe this is enough.

 

Sounds like it was a VATS problem all along. It will kill the power to the starter also. Did you have the starter checked after you removed it?

 

I had it checked and the starter was bad.

 

Did you check the fuse holder next to the battery? I know TPI motors have one but I am not sure about TBI motors.

 

yes, I ran the wire from the fuel pump to the ecm, I ran a hot wire to the fuel pump (new)it works, but no power to injectors, so I think the may be on the same curcuit? thanks for all the info.

 

The ECM supplys the ground to activate the injectors,so it sounds like either a VATS or ECM problem.

Get the chip swapped out to get rid of the VATS and see where that gets you.