1994 Ford Ranger High & low idle

NICKMOM92

MEMBER
1994 FORD RANGER
6 CYL
2WD
MANUAL
17,000 MILES

The truck idles high & low on a cold engine. When it warms up it idles fine. What could be the problem?
Thank You!

Friday, December 21st, 2007 AT 12:07 PM

5 Replies

LEGITIMATE007

MECHANIC
5,121 POSTS

One, make sure your oil is at a proper level, and two, test your iac idle air control valve to make sure it is working properly. And then check for cracks or disconnects in you vacuum hoses.
Let me know what happens

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Friday, December 21st, 2007 AT 12:10 PM

NICKMOM92

MEMBER
6 POSTS

Thanks for your reply. The vacuum hoses appear to be fine. This weekend we will be changing the oil and the idle air control valve is on order. We had already changed the throttle position sensor as someone said that could be the problem but it wasn't. The truck runs great for as many miles as it has, other than this idle problem.

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Friday, December 28th, 2007 AT 9:08 AM

LEGITIMATE007

MECHANIC
5,121 POSTS

Your welcome boss/ let me know what happens :wink:

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Monday, December 31st, 2007 AT 8:48 AM

NICKMOM92

MEMBER
6 POSTS

My son's truck seems to be running just fine at idle now, after changing the idle air control valve! I thank you very much for your input and so does he! Have a great day! :D

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Monday, January 7th, 2008 AT 11:16 AM

LEGITIMATE007