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I reckon its probably the idle control then or the adjustments out cos its knackered and somones been tweaking before you!
1.9d Mk2 (M59/BE4/5) with battle scars from a conservatory attack. Previously owned a 1.4i Mk2 Forte.
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Hi! I'm having a similar problem with a high-ish idle speed. It's about 1200RPM when cold but decreases to about 850RPM when warm. The engine is a 1.9D in a 51 plate Multispace. I'm told by other people the throttle is also a bit stiff, but I haven't noticed it.
Can anyone tell me what the idle speeds should be?
Thanks,
Andy.
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(29-11-2011, 11:11 AM)andy1702 Wrote: Hi! I'm having a similar problem with a high-ish idle speed. It's about 1200RPM when cold but decreases to about 850RPM when warm. The engine is a 1.9D in a 51 plate Multispace. I'm told by other people the throttle is also a bit stiff, but I haven't noticed it.
Can anyone tell me what the idle speeds should be?
Thanks,
Andy.
850-920 RPM idle speed.
There's no throttle in Diesel engines.
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29-11-2011, 04:48 PM
(This post was last modified: 29-11-2011, 04:49 PM by tedmagnum.)
How do I adjust the idle ?????
Sorry for all the newbie questions. I'm a bike mechanic really and Diesels are a new thing to me...
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(29-11-2011, 04:48 PM)tedmagnum Wrote: How do I adjust the idle ?????
There's no way to adjust.
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@ PK & Tedmagnum. The idle speed is adjusted by the idle control valve in the cooling system which acts via a thermo element which operates a cable which operates the idle control on the fuel injection pump. In your case Ted if the idle control valve is kaput your idle will remain constant. The idle speed should only be at the higher end of its range when cold as the coolant warms the idle speed will reduce. Ted if you reduce your idle speed it will be lumpy when cold and tends to make pulling away a bit jerky when cold. The only cure is to replace the idle control valve. That is of course if your engine is the same as mine.
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(29-11-2011, 06:51 PM)divingscubaboy Wrote: @ PK & Tedmagnum. The idle speed is adjusted by the idle control valve in the cooling system which acts via a thermo element which operates a cable which operates the idle control on the fuel injection pump. In your case Ted if the idle control valve is kaput your idle will remain constant. The idle speed should only be at the higher end of its range when cold as the coolant warms the idle speed will reduce. Ted if you reduce your idle speed it will be lumpy when cold and tends to make pulling away a bit jerky when cold. The only cure is to replace the idle control valve. That is of course if your engine is the same as mine.
Cheers mate. You really know your stuff. I will check out the valve.
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