Omega Owners Forum
Chat Area => General Discussion Area => Topic started by: IrmscherKris on 08 October 2007, 16:20:07
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When warm mine idles at 400rpm - the last V6 I had sat at 600rpm...
Where does yours sit? :y
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Mine is around 600rpm i think.
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nearly 700
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About 600 for me too.
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When at normal operating temperature, between 400-500 rpm.
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mines 600 rpm :y
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5-600
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Warm and with aircon off, the rev counter reports 450rpm.....the ECU reports target and actual rpm as 500rpm.
Warm and with aircon on, the rev counter reports 600rpm.....the ECU reports target and actual rpm as 650rpm.
Remember that the rev counters are not totaly accurate.
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cold 1000 rpm
warm no a/c 500
warm with a/c 650/700
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Am I right in saying it should be 660rpm? If so I'm wondering if my timing is slightly out.
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It's under closed loop control by the ECU using the idle air valve, so assuming it doesn't fluctuate when you turn the steering and switch on the air con, indicating the ECU has lost control of the idle speed (dirty air valve, maybe?) it's where the ECU wants it to be.
Ignition timing (if that's what you mean) is controlled by the ECU and not adjustable, but it's one of the parameters that the ECU will use to control idle speed. Cam timing might make it idle lumpy but the ECU will still regulate the speed.
As Mark says, Tachos are not accurate, especially at small indications, so if you don't have any instability of the idle or stalling problems I'd say it's OK.
Kevin
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I think if they are not fluctuating and engine dont have irregular vibrations its ok.
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just a tad under 500 on the 3.0 and nearer 500 on the 2.5`s
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About 750 with climate 600/650 without.
Think I need a top hat seal on the breather box so that might lower it slightly.
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Warm without air con on 500rpm, with air con on about 600rpm :y
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My 3.0l, shade under 500 with A/C off, around 600ish with A/C on.
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Mine still sits at about 450-500 as read using a digital tacho...
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Just under 500 & just over with aircon
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550rpm cold
550rpm warm
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500 rpm warm with no a/c
600 rpm warm with a/c
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Mine idles at around just under 500 - 550, although it feels too low too me, slight engine vibrations at that rpm, Its much smoother at 600 or over.
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Around 600rpm on both the elite and mv6
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500rpm warm without a/c. Out of interest what are manufactures figures?
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Between 5 and 600 rpm, depends if air con is on or not :y
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Just under 600 on the gauge
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5-600 RPM
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Whats Aircon :-[
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Whats Aircon :-[
Yours may be posh, but not that posh?
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Whats Aircon :-[
Yours may be posh, but not that posh?
Its posh enough to have it but not posh enough for it to work ;)
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Whats Aircon :-[
Yours may be posh, but not that posh?
Its posh enough to have it but not posh enough for it to work ;)
Never mind, its posh enough to have electric front windows ;)
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600 rpm
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warm no a/c - 500rpm
warm a/c on - 600rpm
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My car must be F****d then............... ;D
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on the road ;D
about the same as everyone else's ... although I noticed on the pre-facelift the idle didn't drop when air con compressor switched off, it does (or did) on both facelifts ...
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Climate off: 450 - 500 RPM
Climate on: 600 - 650 RPM
This is with the engine at operating temperature.
However, if the engine is idling and I turn the steering wheel, the revs increase. Is this an indication that the idle control valve is having trouble? In the past, I thought that it was to do with the steering box detecting load and increasing the engine revs accordingly to provide extra effort.
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There's a pressure switch in the PAS circuit that detects rising fluid pressure (= steering effort) and tells the ecu to give it a bit more beans to prevent a stall.
Kevin
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on the road ;D
about the same as everyone else's ... although I noticed on the pre-facelift the idle didn't drop when air con compressor switched off, it does (or did) on both facelifts ...
mine too im afraid
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There's a pressure switch in the PAS circuit that detects rising fluid pressure (= steering effort) and tells the ecu to give it a bit more beans to prevent a stall.
Kevin
Thanks for this Kevin, it confirms what I thought. Earlier in the thread there is a statement that says about the AIC valve.