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Idle speed, and vibration problems

1403 Views 4 Replies 4 Participants Last post by  Yadkin
Good morning,

I hope everyone's having a great day. I have a 2005 4.0 V6 mustang, and I've had the car for about 40,000 miles. I've replaced the fuel pump, spark plugs, and wires on it, along with lots of front end parts recently. Lately, the car has been idling at a 250 RPMs at a stop, and my door panels are starting to vibrate. The car is not struggling to stay afloat, but the vibration and low idle are strange. Would anybody have any solutions? I was leaning towards a throttle sensor, but wasn't sure, because it's not surging.

Any help or advice would be greatly appreciated
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1. Clean the throttle body opening.
2. Punctuation is underrated.
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Welcome to the forum

1. Clean the throttle body opening.
2. Punctuation is underrated.
After #1, the idle re-learn might be worth a try. I believe the details are on here somewhere, but basically you just disconnect the battery for about 20 minutes (this resets and clears the computer) then reconnect the battery, start the car from cold; let it idle while it warms up for 5 or 10 minutes or so with the A/C off (not sure exactly how long) and then let it idle for a few more minutes with the A/C on.

Just so the OP doesn't get the wrong idea: #2 is a compliment. Your post is very well written; we get lots of barely-readable posts on here, due to lack of punctuation, lack of line breaks, horrible grammar, unintelligible spelling, etc. . . . LOL
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Just so the OP doesn't get the wrong idea: #2 is a compliment. Your post is very well written; we get lots of barely-readable posts on here, due to lack of punctuation, lack of line breaks, horrible grammar, unintelligible spelling, etc. . . . LOL
crjackson edited it after my comment and now gets a gold star. :)
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