Mechanics

HIGH RPM

2004 Ford Ikon • 4 cylinder 2WD Manual • 20,000 miles

I have a ford ikon model 2004, I get it fitted with lpg lambda gas kit over a period of two year
it is running well but now a days I am facing
a problem that at idle speed its rpm raises at 2000. Please tell me what to do ford servivc station donot accept it for service saying that lpg fitted car we do not service
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Anil kumar
December 2, 2010.




This could be a problem with the idle control unit of the LPG system, get an accredited gas tech to check this out, maybe the Co that fitted the conversion can look at it.

Mark (mhpautos)
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Mhpautos
Dec 2, 2010.
I'm having the same problem since few days back. I had a talk with the technician from the nearest dealer and my problem is yet to get resolved. But I have a strong feeling its the Idle Air Control Valve, either stuck or short circuit. Replacing it should solve the problem. I found this explaination which should help: An IAC (idle air control) motor is designed to adjust the engine idle RPM speed by opening and closing an air bypass passage inside the throttle body. An IAC motor can fail one of two ways; either the motor short circuits and stops working or the motor will develop high resistance and cause the IAC control motor to react slowly. Either failure will cause the engine to operate at an elevated idle. When a trouble code scan is performed it sometimes won't always detect a failed or weak IAC motor. To check the IAC motor remove the unit. With the wires connected turn the key to the "on" position without starting the engine. The IAC should move in or out. If the IAC motor does nothing it has probably failed. Replace it with a new unit and recheck system. Note: while the IAC motor is removed clean (use aerosol carburetor cleaner) the passages the IAC uses to control idle air speed. If the IAC valve checks "ok" proceed to the next step.

Tiny
Raymond_j
Mar 10, 2011.

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