Question about 2000 Isuzu Trooper
During idle or slow moving, randomly the RPM is rising to values almost up to 2000, then reduces randomly. Sometimes even causes the vehicle to accelerate without any warning. This phenomena happans few times a year and disappears.
Service Isuzu garage cannot identify the problem as it shows and dissapears occasionally.
Is therer any official Isuzu email that can help??
Yes here is the common problem
Here is the most common cause of surges and stalls and low idle rough idle, it is the idle speed control air-bypass valve and throttle valve (IAC for short), they get full of gunk 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.
Posted on Feb 18, 2009
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Posted on Jan 02, 2017
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