Question about 1997 Oldsmobile LSS
I would have the ignition coils checked to make sure that they are still functioning properly. I don't know if you have an advanced auto parts near you, but for my girlfriend I just replaced all (3) ignition coils. They were $24 each so it wasn't that bad. Cleared her problem right up. I also replaced the plugs and plug wires at the same time. She was having the same symptoms. When you open up the hood if you look to the left near the battery you will see a collection of cables running from the ignition coils. If you have the V6 there should be 3 ignition coils and 2 spark plug wires running from each one. To remove the ignition coils if you want to remove them simply use a 5.5 mm socket and an extension. there is a mini bolt on each side. Only do these one at a time so you don't get them confused. It is essential that each ignition coil corresponds with the correct cyclinder so that the engine will fire properly.
Posted on Feb 27, 2009
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Posted on Jan 02, 2017
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Feb 25, 2015 | 2005 Ford F-150
Here are the most common causes of idle surge, rough idle esp when cold and stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.
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