98 Ranger 3.0 Engine high RPM's when warm

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98 Ranger 3.0 Engine high RPM's when warm

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Ford >> Ford Trucks, Ford Vans & Ford SUV's >> Ford Ranger >> 98 Ranger 3.0 Engine high RPM's when warm

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98 Ranger 3.0 Engine high RPM's when warm - 6/19/2005 10:34:39 AM

planefella

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When my 3.0 Liter 98 Ranger warms up I have an intermittent problem with high RPM"S - I'll pull up to stop or be in traffic and the engine goes to about 3000-3300 RPMS' - sometimes I can get it to slow by feathering the clutch a few times and then it will drop back to idle in nuetral or with the clutch in - but this is hit or miss? I suspect some sort of sensor - help please!

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RE: 98 Ranger 3.0 Engine high RPM's when warm - 6/19/2005 7:20:07 PM

DangerRanger

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Was the battery disconnected recently?

(in reply to planefella)

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RE: 98 Ranger 3.0 Engine high RPM's when warm - 6/19/2005 7:32:36 PM

hockeyhitman69

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sounds like iac valve (idle air control sticking)

(in reply to DangerRanger)

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RE: 98 Ranger 3.0 Engine high RPM's when warm - 6/21/2005 6:24:23 PM

josser

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i have a 97 that did the same thing for sometime all i did was hit the gas pedal very hard and it quit doing it.

(in reply to hockeyhitman69)

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RE: 98 Ranger 3.0 Engine high RPM's when warm - 6/28/2005 3:11:10 PM

planefella

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Yes - I had a new starter put in so the battery was disconnected - but it was doing this even before - what's your thought?

(in reply to DangerRanger)

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RE: 98 Ranger 3.0 Engine high RPM's when warm - 7/2/2005 9:44:51 PM

josser

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i'm with hockey, check the IAC valve and also the TPS (throttle positioning sensor) to make sure they are operating within spec volts.

(in reply to planefella)

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RE: 98 Ranger 3.0 Engine high RPM's when warm - 7/14/2005 10:58:54 PM

Ramrod48

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yeppers if I had to bet money I say IAC, take the 2 blots off unplug the wire get you some carb. cleaner , and down inside the holes get filled with blowby jest keep rinsing it out till its clean , an carefully see if the plunger will move up an down. If i remember rite it has a one inch stroke that provides the computer with over 230 diff settings !!!!,, I have seen them so clogged up the the holes in the throttle plate where closed off,, they are basicly a metered vaccum leak

(in reply to josser)

Post #: 7