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600 Rpm At Idle, Ok Or To Low?

alter_schwede
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alter_schwede Member

alter_schwede

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Posted

hi,

I find the idle run on my car is a bit to low, running at 600 rpm, sometime even down to 500rpm, so to say that I couldn't get so smooth start in the 1st. gear when the engine not enough in-between-gas, it feels like the car loses both power and torq.

I have run the PST2 and the DME showed only problem on the "Lamdasond".

Would a 800 rpm at idle run smoother at start?

cheers,

Tony

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alter_schwede Member

alter_schwede

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engine stalled 2 time yesterday and payed PZ a visit this morning and the outcome was, not to your surprise, new MAF was installed and after that the engine runs quite calm at idle.

the MAF was replaced under Warrenty w/o charge :thumbup:

to my surprise, they said they can't really adjust the idle run, is that right?

another thing I noticed, w/ aircon on, I get 800 rpm at idle and w/o aircon 600 rpm.

is that so with you guys also?

cheers,

Tony

Edited by alter_schwede
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umn Member

umn

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...

to my surprise, they said they can't really adjust the idle run, is that right?

another thing I noticed, w/ aircon on, I get 800 rpm at idle and w/o aircon 600 rpm.

is that so with you guys also?

cheers,

Tony

Yep, idle speed can't be adjusted, it's programmed into the DME.

Idle is supposed to be 700 min-1 w/o aircon and about 820 min-1 w/ aircon, but you can't accurately tell by the rev counter. Incidentally, this change in idle changed with later versions of the DME.

Also, idle w/o aircon is always a bit lumpy. If it is very lump, it could be some build-up on the intake valves or high levels of petrol in your oil. Either way, some spirited motorway driving will usually get rid of it.

Cheers,

Uwe

Edited by umn
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