Question about Cars & Trucks
Notice the high idle yesterday. When I got it home idle was still high even though it was fully warm. Tried to rev it and back off but it just increase idle more.
Generally speaking, the only way for the idle speed to increase is if extra air is getting past the throttle plate.
So that could include the throttle plate sticking open, the idle air control valve not closing, or a vac leak somewhere such as a hose or gasket.
If you can cover the throttle body with something and the engine still runs at a high speed there is a large vac leak somewhere.
Posted on Jan 22, 2013
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Posted on Jan 02, 2017
SOURCE: 98 Buick Regal -engine quits
ok its one of two things you need to check when it cuts off if you have spark or fuel if you lose fuel pressure replace pump it gets hot and makes noise like its running but its not pumping fuel and if you lose spark you need to replace ignition control module has a hair line crack in it and when gets hot the crack expands and loses contact and wala no spark
Posted on Aug 16, 2009
SOURCE: idle out of control.
check all your vacuum hoses and the throttle body itself for a vacuum leaks if the hoses replace as nessasary if to check for throttle body get can of carb cleaner and spray around base of throttle body and sides not in it if idle raises you have a vacuum leak goto a good parts store and ask for a rebuild kit don't goto auto zone or advance they don't carry them
Posted on Oct 18, 2009
take off your idle air control motor and clean it with carb cleaner sounds like clogged and check your idle screw on the throttle body where wire from pedal connects to throttle body make sure it is not got something making it stick or push down cable and make sure the throttle body not dirtyl spray carb cleaner in it sometimes when dirty let in excess air and causes extra gas be used and high idle try these see if fixes it
Posted on Sep 24, 2010
Tips for a great answer:
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Oct 12, 2013 | 1999 Honda Accord
stalling issue at low speeds
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
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