Question about 1999 Honda Accord
RPM surges up and down while in park
Posted by Anonymous on
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Posted on Jan 02, 2017
Here is the most common cause of surges and stalls, it is the idle speed control air-bypass valve and throttle valve, they get full of gunk over the miles and cause idle issues (stalls) 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.
Posted on Nov 28, 2008
check your tps sensor, or idle stop soleniod. they both control idle. Its not a major problem it wont effect your driving but may cause vehicle to die at a light.
Posted on Dec 01, 2009
no the surge that high is not normal a normal cold start should go to around 1500 then settle slowly to 750 or so but this all depends on engine temp and ambient air temperature
Posted on Feb 07, 2010
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