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Old 11-02-2008, 05:56 PM
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Join Date: Dec 2007
Posts: 30

Hi guys have bought a 92 190E 2.3 that has a low idle when cold about 450-500rpms then warm 600-700.Whats the things needed to be checked out?

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Old 11-02-2008, 05:58 PM
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Join Date: Jan 2008
Location: Redondo Beach, CA
Posts: 188
The cold start valve ?
1993 190E 2.6 135k
1989 Ford Thunderbird SC 5 Spd 79K
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Old 11-22-2008, 01:48 AM
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Join Date: Dec 2007
Posts: 30

Will try the cold start valve next!

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Old 11-22-2008, 06:47 AM
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Join Date: May 2001
Location: Northern Va.
Posts: 3,386
Forget the cold start valve, it does what its name implies. Its controlled by the fuel pump relay.

Check the idle air bypass valve, it's cylindrical with two hoses and a two pin electrical connector. Make sure it's clean inside. The engine temp sensor also needs to be checked. Its controlled by the idle speed stabilization control unit. It gets a temperature signal from the ECU and that signal is also sent to the FPR.

Get the repair CD's and check the schematics.


Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor

Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL


Not part of the in-crowd since 1952.
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