After replacing spark plugs and wires, number 2 cylinder misfires. A computer check at the local auto parts store revealed as an explanation that the power train module detected a misfire condition. How can I determine what needs to be done to correct sluggishishness of the car. Before I had the repairs done, my 88 Royale LS was running much better. Now the check engine lights blinks constantly.
An engine control module (ECM) is a computer that controls various engine functions in a vehicle. It receives input from sensors throughout the vehicle and uses this information to control the fuel injection system, ignition system, and other engine functions.
If you are considering replacing the engine control module in your car, it is important to make sure that this is the correct repair for the problem you are experiencing. The ECM can be a costly part to replace, and replacing it without properly diagnosing the problem first can be a waste of money if it does not fix the issue.
If you are unsure about whether the engine control module is the cause of the problem you are experiencing, I recommend taking your car to a mechanic for a diagnostic test. They will be able to determine the cause of the problem and advise you on the best course of action.
SOURCE: Misfire in two cylinders
Check to see if the two cylinders misfiring are on the same coil pack. If so, change the coil pack in question.
This happened to me on 1997 Cadillac Deville Limousine.
Also, check for a blown head gasket with compression test.
SOURCE: I have a 1988 Olds
Sounds like a problem with the fuel pump components in the fuel tank.
Especially look at the small rubber hose that connects the pump to the
pickup tube for being loose and sucking air. The fuel pumps are well noted to start to fail around 40,000 miles.
About this, just need to be extremly careful as the replacement pumps usually come with new
electrical connectors and must be utilized for installation on the new
pumps as the old connectors tend to not fit correctly and can become
loose thus causing erratic pump operation. GM has a lousy reputation on their fuel pumps as it is the gas in the
tank that is used to keep the pump from overheating due to the high
speed operation of the pump and I have seen numerous pumps fail when the
fuel level gets below 1/8 tank of fuel.
Remember that intermittent faults are very diffcult to diagnose, but testitng one to one devices could be good results. Also, could be vacuum leak or vacuum hoses in wrong places. Scanned the ECU, some fault code stored there maybe.
Keep us updated.
SOURCE: Missfiring detected in OLDSMOBILE intrigue 2002 3.5L
For engine misfiring problem check the
help links mentioned below. Click the link below to go through the
troubleshooting procedure :----
Engine misses and truck jumps? Hard to down
shift? Issue with high gear only?
http://technoanswers.blogspot.in/2012/02/engine-miss-and-truck-jumps-hard-to.html
----------- http://technoanswers.blogspot.com/2012/01/bad-miss-at-idle.html ----------- http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html ------------ http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html -------------- http://schematicsdiagram.blogspot.com/2011/12/misfire-on-cylinder-4.html ----------- http://technoanswers.blogspot.in/2012/02/oil-on-spark-plugs-and-car-misfires.html ---------- This will help. Thanks.
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