gpchris Posted October 3, 2008 Report Share Posted October 3, 2008 Well It ran fine but then when i went to start it again i noticed it was shaking.. Enough to make the steering wheel shake and my change make noise in the cupholder.. The shaking/noise is linked to the motor. As it revs up the shaking gets faster. No codes.. Changed plugs, wires and coils, it still does it. I dont know if changing the ICM would make any difference I mean if it was a misfire it should throw a code.. What about a bad fuelinjector or clogged fuel filter?? Im out of ideas.. I mean the car ran fine then 5 minutes later i started it back up and got this shiz. pleas help Quote Link to comment Share on other sites More sharing options...
oldscsc Posted October 3, 2008 Report Share Posted October 3, 2008 Motor mounts tight? Quote Link to comment Share on other sites More sharing options...
Night Fury Posted October 3, 2008 Report Share Posted October 3, 2008 Mine shook like hell... it BETTER be because of the fuel injector I just replaced... Haven't had a chance to start it back up yet. Quote Link to comment Share on other sites More sharing options...
gpchris Posted October 3, 2008 Author Report Share Posted October 3, 2008 Motor mounts tight? Should be.. I mean I just drove it the other day, it was fine. I shut it off came back inside then 5 minutes later I went back out and started it and it started this shaking.. Can a motor mount blow that fast? good on all fluids Quote Link to comment Share on other sites More sharing options...
19Cutlass94 Posted October 3, 2008 Report Share Posted October 3, 2008 i know when i dropped a cylinder it did exactly that. Quote Link to comment Share on other sites More sharing options...
Addicted To Boost Posted October 3, 2008 Report Share Posted October 3, 2008 Did one of your sparkplug wires pop off a coil? Quote Link to comment Share on other sites More sharing options...
gpchris Posted October 3, 2008 Author Report Share Posted October 3, 2008 no and i replaced the coils The video really sucks and doesnt show it well but you get the idea.. Quote Link to comment Share on other sites More sharing options...
gpchris Posted October 3, 2008 Author Report Share Posted October 3, 2008 Cylinder #2 appears to be dead.. Its does spark though. Bad fuel injector on cylinder #2? But wouldnt an injector throw a code? Quote Link to comment Share on other sites More sharing options...
1990lumina Posted October 3, 2008 Report Share Posted October 3, 2008 No, there is no way for the computer to know if the injecotrs work or not. It is just an on/off pulse they are given, no feedback. Quote Link to comment Share on other sites More sharing options...
AWeb80 Posted October 3, 2008 Report Share Posted October 3, 2008 how did you know it is #2? did you ohm them out? Quote Link to comment Share on other sites More sharing options...
Hairdo12 Posted October 3, 2008 Report Share Posted October 3, 2008 Just a thought... have you checked to make sure the wires are on the correct spark plugs? Quote Link to comment Share on other sites More sharing options...
gpchris Posted October 3, 2008 Author Report Share Posted October 3, 2008 Just a thought... have you checked to make sure the wires are on the correct spark plugs? Ok heres what happend.. I drove it home from work, went inside, changed cloths, came back outside, started it and it began this shaking. I highly doubt sombody broke into my car, poped my hood and switched a couple spark plugs.. And adam I assume its injector #2 because when I pull the spark plug wire from cyl #2 it runs the same.. #2 seems to be dead. Its getting spark so it must not be getting fuel. Quote Link to comment Share on other sites More sharing options...
AWeb80 Posted October 3, 2008 Report Share Posted October 3, 2008 Ohm them out and see what's up Quote Link to comment Share on other sites More sharing options...
Breakdown Posted October 3, 2008 Report Share Posted October 3, 2008 I'm used to drive my Cutlass in the winter with 5 cylinders I had a bad plug at the back that I couldn't get access to. It would fire most of the time, but if it was really cold it wouldn't. It would be very evident on the highway 60MPH at 2,500RPM rather than 2,000. Made the engine weak, never had the car shaking. Lots of shaking from bad wires though. If the car shakes, it is usually the engine mounts. Most likely you've lost a lower one, not had it worn. Quote Link to comment Share on other sites More sharing options...
Regal_GS_1989 Posted October 3, 2008 Report Share Posted October 3, 2008 It could be caused by the ICM. I had the ICM go bad on my old regal and it only ran on 4 cylinders. New ICM with the old coils and the problem was fixed. Also, if this is an OBDI car, good luck in getting any kind of code to show up. AFAIK, OBDI doesn't throw a code for misfires. Quote Link to comment Share on other sites More sharing options...
gpchris Posted October 3, 2008 Author Report Share Posted October 3, 2008 ok, i got the icm and a few injectors.. Ill channge them today and hopefully it will stop! Quote Link to comment Share on other sites More sharing options...
Night Fury Posted October 3, 2008 Report Share Posted October 3, 2008 It could be caused by the ICM. I had the ICM go bad on my old regal and it only ran on 4 cylinders. New ICM with the old coils and the problem was fixed. Also, if this is an OBDI car, good luck in getting any kind of code to show up. AFAIK, OBDI doesn't throw a code for misfires. OBD1 doesn't show codes for SHIT. Quote Link to comment Share on other sites More sharing options...
jman093 Posted October 4, 2008 Report Share Posted October 4, 2008 ok, i got the icm and a few injectors.. Ill channge them today and hopefully it will stop! Well I didn't respond in time before you bought parts, but maybe you can return them if you find the problem before you install them. I'd first just swap the #2 injector with another one and see if the miss moves to that cylinder. Also, ICM's can be tested at Oreilly and autozone (off the car with a tester in their store). Their tester has always been accurate for me. When they said it was bad, a new one fixed my problem, and when they said it was ok my problem turned out to be something else. Just make sure they run the test a few times to heat the module up. They sometimes fail when they get hot. hope this helps Oh and Regal_GS is right. You'd be surprsied at how badly an OBD1 car can run and not throw codes. And OBD 1 doesn't have misfire monitoring. One of it's functions is to monitor all your sensors but they can sometimes fail completely and not throw a code. Quote Link to comment Share on other sites More sharing options...
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