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  #1  
Old 03-31-2010, 01:56 AM
John1954 John1954 is offline
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Default fast idle

I have 2003 Ford Ranger with 4cyl. 2.4 liter eng. I recently cleaned my K&N air fliter and now the engine is revving up to about 2000 RPM and then it will drop to about 1000 RPM and idle at that RPM. It has never done this before. Does anyone have any suggestions? Thank you, Jack
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Old 04-02-2010, 07:19 AM
bob_rhoades78 bob_rhoades78 is offline
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Default Re: fast idle

I have a 88 ranger with a 2.3 EFI with a high idle problem. But mine slowly returns to normal idel after about 2 to 3 min.
Is this normal? I've had a real high ideal for a bout a year until i replaced the IAC,TPS, and O2 senser. I have an idea it might be the coolent temp sending unit. Well what do you guys think...
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Old 04-02-2010, 08:08 AM
sgtsandman sgtsandman is offline
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Default Re: fast idle

Sounds like a winner. If the ECM thinks the engine is cold, it will keep the idle high. What is your coolant temp gauge reading though?
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2011 Ranger XLT, 4X4, 4 door Super Cab. 4.0L, 5 Speed M50D-R1HD, 3.73:1, 8.8" open differential, Jason Pace cap
1999 Honda CR-V EX, RT4WD, 2.0L, 5 Speed MT, 4.56:1, open differential
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Old 04-03-2010, 12:37 AM
John1954 John1954 is offline
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Default Re: fast idle

I have found out what was causing the fast idle. It was the idle control valve. An easy fix!!! Thank you for the suggestions!
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