Question about 2003 Pontiac Grand Prix
Either low on fuel and got sum grit in injector system or a sensor prob get the OBD codes read may need a service if not done in the last year or 15k miles
Posted on Apr 23, 2014
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Posted on Jan 02, 2017
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Throttle Body Cleaning on vehicles without electronic throttle control (most 2003 and down)
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.
Jul 11, 2017 | 2002 Honda Accord
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