Question about 1990 Oldsmobile Eighty Eight

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1990 Olds 88 Royale; engine stalls

Engine stalls (at operating temp) in gear when slowing down or stopping. Will not idle in gear. Engine restarts fine and will idle okay in neutral or park. Service engine light comes on only when engine dies.

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1990 olds culass suprem, is there any transmission vacum lines. down shift hard,when it warms up it,s shift fine.

Posted on Jun 12, 2011

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Sounds like toque converter may be dragging in the transmission this is not totally uncommon for lockup convertes but will require it to be changed to fix it. Error code may be coming up due to stalling and lugging condition of engine.

Posted on Sep 10, 2009

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You've got to do the obvious things, look at your spark plug wires, if you see what looks like chalky residue they are arcing replace them and your plugs. Check all vacume lines for leaks, and make sure your air filter is clean

Posted on Sep 10, 2009

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Posted on Jan 02, 2017

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Here are some of the causes of surges, 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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Stalling


Do this.
Here are some of the causes of surges, 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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1 Answer

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