Idles high when first cranked and then drops to a rough idle.

Asked by Apr 06, 2015 at 08:47 PM about the 1999 Ford Taurus SE

Question type: Maintenance & Repair

My 1999 Ford taurus idles high when I first crank the car, and then when the idle drops, it
drops to a very rough idle. The idle is so rough that the car will sometimes go dead. How
can I fix this issue, or what do I need to check?

1 Answer

36,675

Get a can of throttle body cleaner and remove throttle body and totally clean it. Remove Idle air control valve, tear it down and clean it also. Or buy a new IAC. Clean MAF with special cleaner also. Can buy both at any auto store.

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