Hello, well i got problems again. NO START
I got fuel, 40 PSI at the rail, got spark, cranking, no injector pulse, but power at injectors is OK, fuses OK. I read people have had issues with PCM. Where is it? Is it a main computer? Also how to make certain that it'* faulty. Maybe something else? Thanks.

The PCM is the main computer. You can get to it by removing the kick panel above the front passenger'* feet. I can't remember if the crank sensor has anything to do with injector pulse, but a dead one can prevent the car from starting. Although, I think it has more to do with spark than fuel.

PCM switches ground to operate the fuel injectors at the appropriate times.

So, i'm getting spark but no injector pulse, is PCM dead or is it something different?
Car run crappy last couple of months , stalled once...how can i check crank sensor for fault?

Get the codes pulled. That might shed some light.

Because battery died from constant cranking, i charged it. I tried to check for injector pulse again when it got dark, and battery died after 5 seconds of cranking. hmmmmm
I put in a good battery from my other car and it started right up. I hope that was the problem.

That'* it, congratz. I like it when it ends up being something simple.

In the future, keep in mind you can check codes without a scantool. The procedure is in Techinfo. 93 was the last year you could do this.

Cool

Same thing happening again...Sometimes it starts, sometimes it doesn't. Only code is 21 (low TPS). When it doesn't start, there is no injector pulse. Is it PCM?