Rough idle after cold start throttle blip? - Ford Mustang Forum
 
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post #1 of 5 (permalink) Old 11-15-2013 Thread Starter
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Rough idle after cold start throttle blip?

So leaving work last night I accidentally hit the throttle with my foot just after starting the car. The engine only revved about 500rpm, then started idling rough to the point it was shaking the entire car. I assume some gas wasn't immediately burned off, but I have never seen a new car do that (337 miles). Anybody else ever had this and is it something to have checked out?

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post #2 of 5 (permalink) Old 11-15-2013
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Take it in to the Ford dealer or wait to see if it does it again,might be just a one time thing,these Mustangs do strange things sometimes.

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post #3 of 5 (permalink) Old 11-15-2013
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That's happened to me a couple times. I asked the dealer about it and they didn't have an answer

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post #4 of 5 (permalink) Old 11-16-2013
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Was it cold when this happened? I noticed on mine that no matter how soon after starting, if I touch the throttle the engine will come off high idle immediately. My car will still idle smooth, but it is always warm where I live. Maybe the engine was not warm enough to run stable when it went to a standard idle speed after you touched the throttle. You would think that if the car had to high idle to be stable when cold starting that it it would remain there no matter what until it was warm enough, but maybe it doesn't. I am just guessing here.

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post #5 of 5 (permalink) Old 11-21-2013
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Quote:
Originally Posted by Exodus5 View Post
So leaving work last night I accidentally hit the throttle with my foot just after starting the car. The engine only revved about 500rpm, then started idling rough to the point it was shaking the entire car. I assume some gas wasn't immediately burned off, but I have never seen a new car do that (337 miles). Anybody else ever had this and is it something to have checked out?
Quote:
Originally Posted by 5.0 Coyote View Post
Take it in to the Ford dealer or wait to see if it does it again,might be just a one time thing,these Mustangs do strange things sometimes.
Hello Exodus5,

Welcome to the forum! My name is Deysha with Ford Service. As 5.0 Coyote mentioned, you should bring your vehicle in to your Ford Dealer and have them check it out. Also, Iíd like to get this escalated to the customer service manager of your area. Please, PM me with your VIN, dealer, mileage, full name, and best daytime number so I can help.

Deysha
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