Erratic idling issue

customknight · May 18, 2013

Morning campers!

Most of you know that I'm knee deep in a cracked block sealer running session but I have another problem which was present before I did the heads or the block.
What controls the idle speed? My idle can be at 900 one minute 200 the next, almost stalling, and then up to 1100 rpm?!!

Anyone experienced this one?

V8 4.6 by the way 1996.

Cheers

martynv8 · May 18, 2013

Could be the idle air control valve?

customknight · May 18, 2013

Is there a way to test it? And where is it located?

martynv8 · May 18, 2013

Not sure where it is on Gems. On Thor it's connected to the intake manifold - silver canister looking thing. I would imagine best way to clean it out is with carb cleaner.

customknight · Jun 14, 2013

Looks like i need to have a look at RAVE, I can't find it anywhere. Having said that i don't really know what I'm looking for!

JamesBB · Jun 14, 2013

Mine did that, tried all sorts of things but my issue turned out to be a dodgy wire to the MAF.

But it could be the MAF or the idle air control valve which is on the side of the main air inlet (opposite throttle housing) on the plenum chamber. Could be oiled up.

martynv8 · Jun 14, 2013

No idea where it is on Gems, it should be somewhere near the throttle body before the plenum.
Could only find this but is different from the silver canister type used on Thor.

http://www.roverviews.co.uk/ekmps/s...otor-idle-control-valve-v8-gems-p38-427-p.jpg

Erratic idling issue

customknight

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martynv8

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customknight

Active Member

martynv8

Well-Known Member

customknight

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JamesBB

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martynv8

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