twind Posted May 17, 2005 Report Share Posted May 17, 2005 I changed the engie harness it was chew up and had some cut wires. i compared the old one with the new one exactally the same. I had spark before i changed this harness now i have none. other then the crank sensor what else could cause no spark!! the knock sensor?? the ECM has been changed. Quote Link to comment Share on other sites More sharing options...
digitaloutsider Posted May 17, 2005 Report Share Posted May 17, 2005 wtf!! engie harness asplode?!111 lolz i dunno wuts rong man mayb itz cuz u cant spel LMEFAO., Quote Link to comment Share on other sites More sharing options...
JS91Z34 Posted May 18, 2005 Report Share Posted May 18, 2005 what car, what motor Quote Link to comment Share on other sites More sharing options...
5speedz34 Posted May 18, 2005 Report Share Posted May 18, 2005 Umm, if you didn't hook up the ignition module or coils it wouldn't crank. Quote Link to comment Share on other sites More sharing options...
twind Posted May 18, 2005 Author Report Share Posted May 18, 2005 90 regal with a 95 3100. it cranks, but no spark. Quote Link to comment Share on other sites More sharing options...
GP1138 Posted May 18, 2005 Report Share Posted May 18, 2005 The knock sensor would not cause a no-start. It would only cause timing retardation. First thing I'd do is check the wiring to the ICM/coils. Get in there with a voltmeter and see if it's getting power. Quote Link to comment Share on other sites More sharing options...
twind Posted May 18, 2005 Author Report Share Posted May 18, 2005 I did but i did not get any volts off the connectors coming in. i did not check all of them. i did check the one that connects to left side the only wire on that side. i did not check the other side although. i will check 6 wire connectors. should the cms wires have anthing coming out of them, going to cms. this is done with the key in the on postion. Quote Link to comment Share on other sites More sharing options...
GP1138 Posted May 18, 2005 Report Share Posted May 18, 2005 Are you sure the harnesses matched?? If you're 100% sure they did, you might have the wrong engine harness. Would a 3.1 harness match a '95 3100 harness? They're not completely different engines, but I'd be willing to bet crucial components would have different coloured wires! Quote Link to comment Share on other sites More sharing options...
twind Posted May 18, 2005 Author Report Share Posted May 18, 2005 i ran perfect for about a two weeks or so. then i would miss once a while down the road, the ntwo the point it would die then start and die right away again then just fire after that. i thought it was fuel problem so i replaced the fuel pump. still no go. i was getting fuel to injectors, but would not start. so i check the harness it had so broken wires by the pullys and by the power steering pump so i replced the harness. i pulledthe harness of the same exact car any ideas why i would have spark then none. one more thing when i got the car started after it died and would not start when i did get it started it would run for about a day the do it all over again Quote Link to comment Share on other sites More sharing options...
twind Posted May 18, 2005 Author Report Share Posted May 18, 2005 I have voltage to the two wire dis connector. 12v. still no spark. should there be resistance to the cms sensor or is there votage coming from the coil pack for cms connector. Quote Link to comment Share on other sites More sharing options...
twind Posted May 18, 2005 Author Report Share Posted May 18, 2005 I have voltage to the two wire dis connector. 12v. still no spark. should there be resistance to the cms sensor or is there votage coming from the coil pack for cms connector. Quote Link to comment Share on other sites More sharing options...
twind Posted May 18, 2005 Author Report Share Posted May 18, 2005 I have voltage to the two wire dis connector. 12v. still no spark. should there be resistance to the cms sensor or is there votage coming from the coil pack for cms connector. Quote Link to comment Share on other sites More sharing options...
twind Posted May 19, 2005 Author Report Share Posted May 19, 2005 sorry about that computer was not working right!! Quote Link to comment Share on other sites More sharing options...
joey b Posted May 20, 2005 Report Share Posted May 20, 2005 The crank sensor sends a very small voltage to the ICM telling it when to fire. I'd bet that the Crank position sensor or the wires going to the ICM are causing the difficulty. Not sure bout the 3.1, but the DOHC has the CPS very close to the Knock sensor. Quote Link to comment Share on other sites More sharing options...
twind Posted May 20, 2005 Author Report Share Posted May 20, 2005 it was dis fuse and broken cms sensor wire. thanks although Quote Link to comment Share on other sites More sharing options...
Andrew Posted May 20, 2005 Report Share Posted May 20, 2005 it was dis fuse I dont see why people dont check these more often before they start freakin out about a problem.... its usually one of the first things i would check Quote Link to comment Share on other sites More sharing options...
twind Posted May 21, 2005 Author Report Share Posted May 21, 2005 I did, it was good. so i tested it it read open. Quote Link to comment Share on other sites More sharing options...
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