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4.9 300 cc ford idle to fast at start

At start up jumps to 2000 rpm

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  • Cars & Trucks Master
  • 2,620 Answers

Faulty idle air control valve.Reset computer after replacing the sensor by disconnecting.the ground cable on the battery for 30 seconds.

Posted on Oct 30, 2012

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6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SUPERMAN_B_1
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SOURCE: Idle jumping up and down

MAKE SURE WHEN YOU PLUGGED THE SPARK PLUGS IN THAT YOU GOT THEM IN THE RIGHT FIREING ORDER,ALSO MAKE SURE THAT YOUR THROTTLE BODY IS OPERATING NORMALY WATCH IT WHILE THE CAR IS RUNNING TRY MOVING THE THROTTLE BODY ROD BY HAND

Posted on Mar 07, 2009

  • 72 Answers

SOURCE: 2000 Ford Focus Sputtering / Speedometer Needle Jumping

It could be a spark plug, plug wire, or a coil. Sometimes thay break down intermittently. If it needs a tuneup, that would be the first thing to do.

Posted on Jun 20, 2009

  • 77 Answers

SOURCE: Car starts fine..Idle is fast...stalls after car warms up

Check for vacuum leaks. Also try cleaning the ISV.


If that doesnt work go to vwvortex.com and post your issue there

Posted on Jul 08, 2009

keithheavili
  • 410 Answers

SOURCE: engine idle speed

Sounds like you idle air control valve is starting to mess up. You can actually take this off and clean it with throttle body cleaner and it should help get your idle back to normal. As is sounds the idle air control valve controls how fast/slow your car idles. It is located on the throttle body normally held on with a couple of screws. The throttle body is where the air duct hose coming from the air filter box ends at the engine block. Here is a picture of what you are looking for: a483326.jpg
Make sure that you clean the valve portion and not the electrical plug with the throttle body cleaner. Let it air dry or blow lightly with compressed air before putting it back on. Let me know if you have any more questions. Thanks for using FixYa!

Posted on Aug 01, 2009

  • 4 Answers

SOURCE: 2000 accord v6 engine idle goes up and down after start up

I am having the same issue after I changed my battery today. Upon doing some research it seems like there is some way of aiding the computer with proper idling. I haven't done it yet... plan on going to the dealership where I got the battery, but from my understanding you disconnect the negative line from the battery for a few mins, reconnect, and then apply gas at 3000 rpm for a few mins until the fan kicks on. AND this will help reset your car to proper idling. Good luck

Posted on Aug 31, 2009

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