SOURCE: 93 Cavalier runs real rough
sounds like you left something out. check to see if you plugged in all the sensors and plugs, then check for any vacuum lines that were not replaced or may have been broken
SOURCE: Truck losing power and service engine soon light on
Like to other guy said, give it a tuneup. Also try SEAFOAM to clean carb up of slug. Also check to make sure the butter fly for the choke has not come loose, causing it the choke it down. Failed choke pull-off.
SOURCE: Rough Idle, and Black exhaust smoke.
coolant temperature sensor boken, check and replace if defective.
SOURCE: idling up and down between 1200 and 800 rough idle 2002 saturn sl
oooooooooooo my friend white smoke mens head gasket is gon sorry
Engine stalling and rough run
issue at low speeds
This problem
is commonly caused by a dirty automatic idle speed control valve and
throttle valve. Buy a can of throttle valve cleaner (do not use
carburetor spray cleaner!) from NAPA or Carquest (made by CRC
chemicals) and spray it into the air intake while the engine is
running, use up about 1/2 the can, engine will try to stall hold the
speed up, shut it down and let it soak for 30 minutes, restart and
blow out the remaining fluid, shut it down and disconnect the
negative battery cable for 5 Min's to reset the base idle control. If this doesn't improve the problem you have mechanical problems in the engine like a low cylinder die to worn rings or leaking valve seats.
Engine stalling issue at low speeds
This problem
is commonly caused by a dirty automatic idle speed control valve and
throttle valve. Buy a can of throttle valve cleaner from NAPA or
Carquest (made by CRC chemicals) and spray it into the air intake
while the engine is running, use up about 1/2 the can, engine will
try to stall hold the speed up, shut it down and let it soak for 30
minutes, restart and blow out the remaining fluid, shut it down and
disconnect the negative battery cable for 5 Min's to reset the base
idle control
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Usually answered in minutes!
Check the booster vacuum line to see if off.or hole in booster, to test pull off line to booster and plug to see if run better, also check air filter, black smoke says intake restriction.
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