Question about 2002 Toyota RAV4
Hey, i have a toyota rav4 and it has been giving me problems with the accelerator. it starts slow then picks up speed but slows down when i increase speed and when i remove my leg on the accelerator it picks up speed again but no for long. i tried changing the air filter, nozzles, plug basically did the all tune up service, diagnosis of the engine and changed parts but the problem is still there. recently i had to travel with the car and my mechanic advised my to put the fuel injection cleaner when i gas up and the problem disappeared but if i dont it reappears and gives out a sound like a pinch sound. please help.
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Posted on Jan 02, 2017
SOURCE: lurching at low speed take off
I would start by cleaning the inside of the Mass Air Flow sensor, dirt gets on the sensor element from the air going through and causes these kinds of problems, a company called CRC makes the spray cleaner for MAF's, any good auto parts store will have it, the MAF is located in the air intake hose to the engine. Another thing to check is the throttle valve and air bypass idle speed control valve for sludge, use the following procedure I have written to perform this.
Here is the most common cause of surges and stalls and low idle, 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 Dec 04, 2008
Check the timing and compression of the engine. It sounds like you either have a blown head gasket or a the timing jumped.
Posted on Mar 26, 2009
Posted on Aug 19, 2010
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