Question about 2004 Dodge Ram 1500

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Engine revs up at start up and idle goes up and down, after awhile it settles down but idle is erratic

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Try cleaning your idle air control valve. located on or around the trottle body.

Posted on Sep 30, 2009

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Posted on Jan 02, 2017

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My 2002 Buick park Ave. stalled sometime ago,, i have had the idle control, idle air, and maf, all replaced,, the car runs, now and then it feels like it stumbles,, it has stalled and restarted and ra


when your engine speeds up or slows down the voltage will increase and decrease,, probably has nothing to do with your problem.. Its a 2002 car so first check all the hoses and pipes on the engine that provide vacuum to the different parts of your engine.. check the hose that goes to the brake booster. plug the hose and try running the engine.. If you DRIVE THE CAR YOU WILL HAVE MUCH REDUCED BRAKING EFFIGNCY.. BE CARFULL. to see if you have an internal vac. leak in the booster. Read out the codes to see if there are any set. Your problen sounds like a vac leak to me.. Post here and let us know what you find..

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High rev at cold (winter cold!) idle


Your toyota technician should know what a "cold starting solenoid" is. It is the little thing that works your throttle until the motor warms up and something else takes over. I'd suggest going to another technician.

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2007 Hyundai Accent revs up in idle. Normal?


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Is this normal? My new (used) 2007 Accent is


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BMW Z3 3.0 year 2000 erratic tickover problems


You can in most cases repair this 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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1 Answer

Erratic idoling when warm


sounds like the air idle valve , if you can get hold of valve to test, try this find valve on inlet manifold and pull hose off going to throttle body,reconect hose to new valve so valves are i line to each other, start car and let it idle for a few moments till the fast idle slows down, then disconnect the wirering goint to the original aiv and connect to the new one , hopefully the original one would have been diconnected in the open position , reconnect wirering to the new valve and turn engine off. disconnect battery for 20 seconds . recon battery and turn ignition on, pump gas pedel 5 times to reset . start engine and let it idle for a few moments ,then try to turn steering wheel , engine speed should rise slightly due to load from power steering pump and then settle back down 875 1075 rpm.this is what the air idle valve should do. if it doesen't look at wiring goig to aiv might have scuffed through.

Aug 09, 2009 | 2002 Land Rover Freelander

1 Answer

Idle irratic


Here are some of the causes of surges, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue 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

Apr 11, 2009 | 2001 Chrysler PT Cruiser

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