Question about Cars & Trucks
Engine chugs in idle and stutters when driving at low revs ( kangaroos like a learner driver not giving enough throttle ) problem started when air filter intake adapter perished. changed filter and adapter. stuck as to what could be causing it. Drives fine if you give plenty of gas but slight vibration from engine. Can anyone help please?
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You can in most cases repair this slow speed stall or unstable idle by cleaning the engine throttle valve and the idle speed control valve using a product called CRC Spray Throttle valve cleaner. Spray the cleaner into the air intake of the engine with the hose removed from the throttle body, the engine will try to stall so hold up the idle speed manually. Once you have used up about 1/2 can of the cleaner stall the engine out while spraying and turn the key off, disconnect the negative battery cable for 5 minutes and then reconnect and drive the car for a about 25 miles of varied driving modes. If this doesn't cure the problem you may need the fuel injectors professionally cleaned by the dealer service dept.
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