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Won't rev above 3k

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Old Apr 20, 2011 | 09:01 PM
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Jimboxr4x4
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From: Sevenoaks
Default Won't rev above 3k
My 4wd saph has developed a new problem. It won't rev above 3k and just judders badly. Drives fine below this though.

Any ideas? I've ordered a new fuel filter but any other obvious cause I could check?
Last edited by Jimboxr4x4; Apr 20, 2011 at 09:03 PM.
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Old Apr 22, 2011 | 06:33 PM
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What does it do when trying to drive above 3000rpm, is this in every gear ?
tabetha
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Old May 18, 2011 | 08:16 PM
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hi similar problem with mine, was told it is head gasket,need to upgeade to metal gasket,does it get worse as car heats up or is it consistant from the time you start it up?
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Old May 18, 2011 | 09:05 PM
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I think it's a fueling problem on mine as I changed the fuel
filter which made it a hit better. I'm in the process of re-wiring the pump as it's on the original wiring. I'll let you know how I get on.
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Old May 19, 2011 | 05:16 AM
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i had similar problem but turned out to be a simple spark plug replacement. One melted of but luckly missed the pistons!
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Old May 19, 2011 | 04:58 PM
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Can be the engine wiring loom multiplugs at the back of the bay, give them a clean and see if that helps.
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Old May 19, 2011 | 05:14 PM
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i would check the sparkplugs first. Or the cables loading to them. After that the ignition and indeed the fuel filter.
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Old May 19, 2011 | 08:23 PM
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As said more info needed really on what it's doing? Will it do it if you rev it above this when stationary or only under load and is it in every gear?

Martin
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