help! now no start!

[back2life]

can someone please tell me exactly where is the vats module? i belive there is a problem with it because the security light is gone off but it still doesnt start. i need to see if it is sending the signal the ecm needs to work the injectors

[maxwedge]

Might help to post the year! In addition, what does no start mean?

[back2life]

my fault! it's a 92. now it seems intermittent when it starts. i put a spark tester on the coils it shows good spark on 1 end of coil and they other is weak/intermittent. then it's strong and so forth. same results on all 3 coils. also may i add that the module is new. i still have to test fuel pressure when i can get a chance but i don't think that is the problem. it will run for a while then shut off. code is #17 (spark reference) and #58 (vats problem) car starts everytime xcept after it has been ran and it shuts off.

[Mickey#1]

The most common problem with Vats is not being able to read the resistance of the key pellet. If this was your problem the starter & fuel injectors would both be disabled. Note also that code #58 is a known bug in the 92's, disregard it.

The Big Three:
1 - Check for spark at each of the three front cylinders.
2 - Check for fuel at the injector rail, preferabably with a gauge.
3 - Check for fuel injector pulse.

A couple other things worth checking:
1 - Good connections at both ends of all the battery cables. Remove the bolts & rubber boots to see the corrosion at the battery end of the cables. Clean & apply dielectric grease to prevent help prevent future corrosion.
2- Driver's side ground bus. The fuel pump grounds here & needs a good connection. Pull the metal bar from the bus & clean the male & female ends of all the terminals. Apply dielectric grease & reassemble.

[back2life]

thanks mickey, first let me ask where is this ground bus your speaking of? i have spark when it's not starting, but while its running it is intermittently sparking. fuel pressure i still have not been able to check because i got off late today maybe get to it tomorrow

[Mickey#1]

Here's a link showing the location of the ground bus, it's the connector with the black wires.
http://www.bonnevilleclub.com/forum/...=article&k=102

[back2life]

thanks,now i know what u talking about. i,ve had a problem with the seats in another olds and that is where the problem was. could those be the problem of a fuel guage not working too? also is there one on the passenger side of the olds also?

[back2life]

changed crank sensor and it did not die anymore. drove around for a n hour or so and ran some fuel cleaner thru. came out this morning and it doesnt start! got spark tho,what is the best way for me to check fuel pump relay,fuses and circuit so i know it aint that damn vats system causing this problem?

[back2life]

checked coils for resisance and had autozone check icm. al was good. checked fuel pressure and was good. put on new crank sensor again and it fired right up. will check today and make sure it's still starting up!