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Fast idle on startup

av8r4aa

New Member
Joined
May 29, 2006
Messages
7
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0
City, State
dallas
Year, Model & Trim Level
96 XLT 4.0
I have a 96 XLT with a 4.0 V-6.

On initial morning startup the idle seems high.
After I turn the key the engine will stabilize
at about 1800 to 2000 RPM.
A few minutes later it will slow down to
normal idle speed.

After the first start up of the day the idle seems fine.

Morning temperatures are in the 30 to 40's

What RPM is normal for a cold morning startup?
 






MoabB2

Well-Known Member
Joined
March 21, 2006
Messages
574
Reaction score
4
City, State
South Jordan, Utah
Year, Model & Trim Level
89 Bronco II (97 Mercury)
That seems about normal, it is typical for RPM's to be higher on a cold start up.
 






Joined
December 28, 2006
Messages
39
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0
Year, Model & Trim Level
96 XLT 4x4
That's normal.
 






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