Fast Tick Over

Deetd4 · Dec 4, 2009

Hi Guys, just a quick one about my TD5, I have noticed this past few mornings it has been colder. On starting my Disco it sits and ticks over just under 1000 rpm. Once it warms up it drops back down to the usual 750 ish rpm. Was wondering if there is a sort of cold start system on the truck which makes this happen in colder weather or is something about to go wrong. Nothing else seems to be wrong. Incase it makes any difference it's an 03 truck and its auto as well..........

discomania · Dec 4, 2009

Deetd4 said:
Hi Guys, just a quick one about my TD5, I have noticed this past few mornings it has been colder. On starting my Disco it sits and ticks over just under 1000 rpm. Once it warms up it drops back down to the usual 750 ish rpm. Was wondering if there is a sort of cold start system on the truck which makes this happen in colder weather or is something about to go wrong. Nothing else seems to be wrong. Incase it makes any difference it's an 03 truck and its auto as well..........

Perfectly normal, the ECU is keeping the revs up to warm it quicker, help get bang in the 5th NON glow plug cylinder and to reduce crankshaft bearing wear (a cold lumpy diesel knocks lumps out of bearings).

It ain't a truck, these guys make trucks Scania (Great Britain) Limited - scania.co.uk

Deetd4 · Dec 4, 2009

Cheers discomania, thats put my mind at ease.........

listerdiesel · Dec 4, 2009

discomania said:
It ain't a truck, these guys make trucks Scania (Great Britain) Limited - scania.co.uk

Yep, did my 2 weeks factory training in Sodertalje back in 1971, and got the spring slot rather than winter, so it wasn't too bad weather-wise.

They had just introduced the GR860 range-change box and the DS14 V8 diesel

Peter

Fast Tick Over

Deetd4

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discomania

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Deetd4

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listerdiesel

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