AL Posted December 2, 2009 Report Posted December 2, 2009 My co worker stopped by cause his car is acting up... It sounds like its missing bad but no check engine light... It is also not shifting unless I left off the gas fort it... Its in the garage now and if you have any advice please call me at 4193764073 Quote
RobertISaar Posted December 2, 2009 Report Posted December 2, 2009 i assume, with the missing, there is a serious lack of power? if so, that explains why the tranny won't shift: the TV cable won't let it with the amount of throttle needed. Quote
AL Posted December 2, 2009 Author Report Posted December 2, 2009 All the plugs are new... Its gotta be a fuel injector... We went out and went WOT and still no codes Quote
AL Posted December 2, 2009 Author Report Posted December 2, 2009 Found fresh oil on the bottom side of the intake... Took it off and found fresh oil inside the intake also... Looks to be coming from the line that goes to the front valve cover... There should be a pcv valve there right? Cause there isn't one... Also checked the coolany and it looks like there might be oil in it... No coolany in oil tho Quote
RobertISaar Posted December 2, 2009 Report Posted December 2, 2009 PCV should be there... sucking oil in the intake will foul plugs fairly quickly... might as well have the fronts pulled, at least it only takes 5 minutes. i can't remember what oil in the coolant means... possibly a headgasket going? Quote
AL Posted December 2, 2009 Author Report Posted December 2, 2009 Plugs all look brand new and he said he has never changed them in 26k miles he has had it Quote
RobertISaar Posted December 2, 2009 Report Posted December 2, 2009 my bad: it looks like the PCV is on the rear valve cover. the one in the front is the fresh air return Quote
AL Posted December 2, 2009 Author Report Posted December 2, 2009 Oh alright... We are going to get some seafoam now and maybe a miltimeter to check injectors Quote
AL Posted December 2, 2009 Author Report Posted December 2, 2009 Will my injectors from my 92 3.4 work? Quote
RobertISaar Posted December 2, 2009 Report Posted December 2, 2009 those are somewhere between 21-23 lbs/hr, compared to the 16.7lb/hr the 3.1 would have... unless you have stuff to tune it, i wouldn't advise it. that's 25-38% more flow than what the ECM is expecting... it would probably run, but the oil will get diluted with raw gas so quickly... Quote
AL Posted December 2, 2009 Author Report Posted December 2, 2009 Alright... I picked up a miltimeter and am going to ohm them... Hopefully the seafoam will get some of the oil out of the intake Quote
AL Posted December 2, 2009 Author Report Posted December 2, 2009 Seafoam helped and all injectors ohm at 12.6 to 12.8... I'm done for the night Quote
Hairdo12 Posted December 2, 2009 Report Posted December 2, 2009 So did the Seamfoam completly fix it? If not, did you check the other obvious... are all plugs firing? Quote
AL Posted December 2, 2009 Author Report Posted December 2, 2009 I guess I didn't check to see if they were firing... So coils could be the issue too right now... I didn't check there resistance Quote
Hairdo12 Posted December 3, 2009 Report Posted December 3, 2009 start the car and one at a time pull off one of the front three spark plug wires from the spark plug. If there is no change in how the motor runs, you found the coil. It could also be the ICM too don't forget. Quote
Galaxie500XL Posted December 3, 2009 Report Posted December 3, 2009 I've seen 4 things that do this without setting codes: Bad ignition control module Bad crankshaft position sensor Bad coil Bad plug wires Quote
AL Posted December 3, 2009 Author Report Posted December 3, 2009 Bad ICM would most likely set a code right? Thats what it did on my car anyway... Bad CPS wouldnt allow it to start I would think... Coil I need to check Plug wires looked very good Quote
Galaxie500XL Posted December 3, 2009 Report Posted December 3, 2009 I've seen ICM go both ways, but in my experience, they don't generally set a code...I know the Advance Auto Parts store here in my town has a tester for the ICM...don't know if that's common, though. Bad ICM would most likely set a code right? Thats what it did on my car anyway... Bad CPS wouldnt allow it to start I would think... Coil I need to check Plug wires looked very good Quote
paulo57509 Posted December 12, 2009 Report Posted December 12, 2009 I replaced a bad coil a few months ago on my '92 Euro. To determine which coil is bad, hook up a timing light to each plug wire. When the timing light doesn't "blink", you found the bad coil. Quote
AL Posted December 13, 2009 Author Report Posted December 13, 2009 ill have to remember that... Im going to check the coil resistance first before i go buy a timing light Quote
1990lumina Posted December 13, 2009 Report Posted December 13, 2009 You might as well forget about getting codes out of a 92 Lumina. The car will barely run and throw no codes. OBD1 really has no purpose to help diagnose issues Quote
RobertISaar Posted December 13, 2009 Report Posted December 13, 2009 OBD2 takes all the guesswork and actual diagnosis out, but a real mech can play with either and get good results. Quote
AL Posted December 13, 2009 Author Report Posted December 13, 2009 OBD2 does take the guesswork out, which is alot easier to work with as you know where to start looking... On this, I dont know where to start looking... And when the plugs are new, fuel injectors ohm out perfectly, wires are new, I kinda dont know where to look... Thats why I am thinking coils, although now he is telling me that this problem is intermittent Quote
RobertISaar Posted December 13, 2009 Report Posted December 13, 2009 intermittent and coils are two things that can mesh together... those coils go through some serious heat cycling. horrible place to mount them GM. Quote
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