i would agree an look at the vats. crabbin was average. weather has sucked for a old guy

 

Didn't see this mentioned, but if I'm not mistaken, there's a fuel pump fuse in that little spot in the dash that's covered by the door on the drivers side.

 

All fuses are good. Had the wife crank the starter and watch the tach. She says it moves up to "0", but not above when cranking. I saw this. What do you think?
YouTube - Broadcast Yourself

 

there are two parts to the system. one part in the coluum/ignition and one part is in the ecm or main computer. he is bypassing the computer and not the igntion switch. he says to tear it all out,,,, not so easy on a 4th gen. it very well could be the computer half that is your issue. start looking for power to the system, look for a fusable link. vats is something i have not had an issue with so im not up on the wiring info on it. you may be better in the long run to send the computer in and have it tuned, while its in there get the vats tuned out completely.

 

Suggestions on where to send it and a cost estimate?

 

get ahold of solomon here and see what he says.
LT1 PCM Tuning - OBDI/OBDII PCM Tuning/Programming Service

 

Thanks, I emailed him. Hey, watch the "old guy" cracks, I are one. Probably older than you.....

 

Well, I've cleaned, tightened and checked all visible grounds under the hood, dash and even in the rear of the car. I've traced the problem to the "Fuel Enable" signal from the VATS to to the PCM. It's simply not getting the signal from the VATS or not recognizing it. Next step is tracking down either an open ground, broken wire or last resort, faulty VATS Module or PCM. I have 2 PCM's and tried both, so I hope they aren't both bad. Anyone have any other suggestions on another possibility I haven't thought of or an easy way to chase this down?

 

By the way, no response from Solomon, don't think you can tune these.....

 

maybe need to figure a way to bypass the vats module. ive see something on it over the years but dont remember how it was done.