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post #1 of 2 (permalink) Old 03-05-09, 09:11 AM Thread Starter
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Neutral to Drive -- bad idling

Hello all,

Situation:

When i put my automatic transmission from Neutral to drive, the rpm of my car drop alot to maybe 100- 250 to 700-800 in a matter of second. This happens to my car for some years now and recently my car stalled on a red light. Restarting wasn`t an issu, just turned the key a second and the car was idling..normally...

This happen only when i start the car and drive right away, when i let the car get warm for some minutes, this never happens.

The reason why i put it to neutral when i come to a stop is because my engine mounts, which are new, seems to be really stiff because in my car, it has a little vibration which because worst whenever it`s cold out. When it's getting hot, i feel just a little vibration which i considered normal for a 4 cyl.

That vibration on drive on a stop sign might be link with my issu discribed earlier.

What could cause this situation ? Idle air control valve comes in mind...what do you think ?


Thanks,

Danny

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post #2 of 2 (permalink) Old 04-12-09, 08:21 PM
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Re: Neutral to Drive -- bad idling

IAC gunked up internally is what it sounds like to me... you say the motor mounts were replaced, what about trans. mount also?


my 1986 Grand Marquis LS... Rose...
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