Psych0matt Posted September 13, 2007 Report Share Posted September 13, 2007 So, short and simple, I'm not getting any spark. where should I start? I've never had to bring a car back after sitting for 2 years -plugs are good (enough) -oil pressure good -cranks just fine what else do you want to know? Quote Link to comment Share on other sites More sharing options...
meltboy1 Posted September 13, 2007 Report Share Posted September 13, 2007 fuses, relays, coil packs maybe? Quote Link to comment Share on other sites More sharing options...
Psych0matt Posted September 13, 2007 Author Report Share Posted September 13, 2007 i was thinking maybe coils or ICM, but I don't know. I'm gonna a try another plug or two, see if i get spark on any of the others. still would try to start though I'd think... Quote Link to comment Share on other sites More sharing options...
GutlessSupreme Posted September 13, 2007 Report Share Posted September 13, 2007 definetly check fuses and all connections first (make sure the ICM's all plugged in). If none of the coils are firing, the ICM's not getting power/ECM signal, or it's fried. Backtrack your way to the ECM, piece by piece, if need be. Check the crank position sensor also. Quote Link to comment Share on other sites More sharing options...
SigEpCutlass Posted September 13, 2007 Report Share Posted September 13, 2007 fuses, relays, coil packs maybe? x2! That's where I'd look. Even if you're sure that the wires and plugs are "ok", it would be a good idea to change them if the car was sitting for 2 years IMHO. Quote Link to comment Share on other sites More sharing options...
Psych0matt Posted September 13, 2007 Author Report Share Posted September 13, 2007 fuses, relays, coil packs maybe? x2! That's where I'd look. Even if you're sure that the wires and plugs are "ok", it would be a good idea to change them if the car was sitting for 2 years IMHO. yeah, that'll be like the first thing I do once I get it running, but I want to get everything back to normal first, then start upgrading what i need to. I'll check it out in a bit, but right now the price is right is on Quote Link to comment Share on other sites More sharing options...
Andrew Posted September 13, 2007 Report Share Posted September 13, 2007 definetly check fuses and all connections first (make sure the ICM's all plugged in). If none of the coils are firing, the ICM's not getting power/ECM signal, or it's fried. Backtrack your way to the ECM, piece by piece, if need be. Check the crank position sensor also. what he said. to rule out a bad plug wires, borrow one off the vert and check for spark off each coil with it. Quote Link to comment Share on other sites More sharing options...
pwmin Posted September 13, 2007 Report Share Posted September 13, 2007 you can always have the icm bench-tested. do you have extra coils and icm from the parts car? maybe you could swap those over quick and see if theres a difference. oh, yeah, you have the vert. since you know all thats good, you could start throwing parts at it. Quote Link to comment Share on other sites More sharing options...
19GT92 Posted September 13, 2007 Report Share Posted September 13, 2007 Is the SES light on?? If it is and the fuel checks out good and everything else is good then i'm 99% sure its the cps I had one fail before in my 92. be very very careful changing it if you break the head off your ****** then the frame has to come down to get it out like what happened to me so g/l Quote Link to comment Share on other sites More sharing options...
19Cutlass94 Posted September 13, 2007 Report Share Posted September 13, 2007 Matt, Ive got like 4 sets of coils and ICM. If you need one lemme know! Quote Link to comment Share on other sites More sharing options...
Psych0matt Posted September 14, 2007 Author Report Share Posted September 14, 2007 well, I know one reason I'm not getting spark, a blown 10amp ignition fuse we had replaced it because it was missing at first, and I don't think we ever thought to check it again. battery is charging, I'll see about cranking it over in a few hours with a new fuse Quote Link to comment Share on other sites More sharing options...
Psych0matt Posted September 14, 2007 Author Report Share Posted September 14, 2007 ok, newest development, no spark because of a popping fuse. now to figure out why the ignition fuse pops every time the key goes to the run position, before cranking it Quote Link to comment Share on other sites More sharing options...
meltboy1 Posted September 14, 2007 Report Share Posted September 14, 2007 Could be a short somewhere most likely, check any wires you can see and see if they are cut or exposed in any way or see if anything is grounding out maybe... Quote Link to comment Share on other sites More sharing options...
Psych0matt Posted September 14, 2007 Author Report Share Posted September 14, 2007 everything looks ok, a little dirty, but nothing worn through or broken on the underside of the fuse box. If I take my multimeter to it, what should I be looking for, and how should I have it set to check? Quote Link to comment Share on other sites More sharing options...
Q-Ball Posted September 14, 2007 Report Share Posted September 14, 2007 I had a bad PCM. I guess it should be right behind the coils. I dont know, I had a shop do it for me. Quote Link to comment Share on other sites More sharing options...
Crazy K Posted September 14, 2007 Report Share Posted September 14, 2007 noted. I will bring you a spare ECM next time I come by! my other thought could be fuel injector is totally shorted out? Quote Link to comment Share on other sites More sharing options...
Psych0matt Posted September 14, 2007 Author Report Share Posted September 14, 2007 possible. the underside looked a little corroded right at the fuse block, but not bad to the point where they should be shorting out. Yeah, bring an ECM and maybe an injector or two, although I don't think the injectors should be bad Quote Link to comment Share on other sites More sharing options...
Psych0matt Posted September 15, 2007 Author Report Share Posted September 15, 2007 searched around this morning, didn't see anything shorting out, but its still popping the fuse pretty good. what other grounds/power cables should I check for? would the starter, alternator, anything like that be related? Quote Link to comment Share on other sites More sharing options...
slick Posted September 15, 2007 Report Share Posted September 15, 2007 Check the igntion wires in the column, make sure nothing in there has been messed around with. Check grounding points, and clean them up with a wire brush. Follow ICM, crank sensor, etc.... wiring back, make sure nothing is frayed. Quote Link to comment Share on other sites More sharing options...
Psych0matt Posted September 15, 2007 Author Report Share Posted September 15, 2007 the under column wiring looks like it's never been touched, but there is a plug that isn't plugged in, and i vaguely remember seeing that somewhere before. it has a black, grey, and orange wires coming out of it, kinda from behind the stereo, but pretty much between the stereo and steering wheel. probably not the cause of any problems, but what is it? Quote Link to comment Share on other sites More sharing options...
Psych0matt Posted September 16, 2007 Author Report Share Posted September 16, 2007 UPDATE: So, It has to be in the ICM. I unplugged it, no fuse popping, plugged it back in, fuse popping. Now I'll have to find a known good one and swap it, see if that fixes the problem. Quote Link to comment Share on other sites More sharing options...
pwmin Posted September 16, 2007 Report Share Posted September 16, 2007 UPDATE: So, It has to be in the ICM. I unplugged it, no fuse popping, plugged it back in, fuse popping. Now I'll have to find a known good one and swap it, see if that fixes the problem. you could take the bad one to the store, have it bench-tested, have a new one bench-tested, buy the new one, then take the bad one to another store under a defective return, unless youre a super-honest person. Quote Link to comment Share on other sites More sharing options...
19Cutlass94 Posted September 16, 2007 Report Share Posted September 16, 2007 or you could buy one of the 4 that I have Quote Link to comment Share on other sites More sharing options...
5speedz34 Posted September 17, 2007 Report Share Posted September 17, 2007 UPDATE: So, It has to be in the ICM. I unplugged it, no fuse popping, plugged it back in, fuse popping. Now I'll have to find a known good one and swap it, see if that fixes the problem. you could take the bad one to the store, have it bench-tested, have a new one bench-tested, buy the new one, then take the bad one to another store under a defective return, unless youre a super-honest person. x2. Except most places don't let you return electronics, and chances are you would just get another working one. I pocket them left and right at parts galore. Quote Link to comment Share on other sites More sharing options...
slick Posted September 17, 2007 Report Share Posted September 17, 2007 Hopefully it's the ICM and not a short somewhere in the harness. Quote Link to comment Share on other sites More sharing options...
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