Not Too Worried, BUT .....
29 December 2008, 01:02 PM
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Not Too Worried, BUT .....
Been away for a few days.
It's been freezing as we all know. I noticed something out of the ordinary on my Impreza, which normally only happens with a stone cold engine.
After a run the revs would stay at about 2000 RPM .... usually they drop to about 800 and sit there steadily with a warm engine.
A blip on the throttle brought the revs down to normal - but pretty slowly.
It's happened twice now .... as I said no great panic, just not normal.
My thinking was the MAF, but then also the Temp. Sensor may be getting confused?
It's a 2000MY Classic, with 90,000 miles - never put a foot wrong.
Any ideas? Thanks
It's been freezing as we all know. I noticed something out of the ordinary on my Impreza, which normally only happens with a stone cold engine.
After a run the revs would stay at about 2000 RPM .... usually they drop to about 800 and sit there steadily with a warm engine.
A blip on the throttle brought the revs down to normal - but pretty slowly.
It's happened twice now .... as I said no great panic, just not normal.
My thinking was the MAF, but then also the Temp. Sensor may be getting confused?
It's a 2000MY Classic, with 90,000 miles - never put a foot wrong.
Any ideas? Thanks
30 December 2008, 08:52 PM
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normally hunting idle or low idle speed for maf..
throttle cable snagging? the blip and off with then have vacum on the throttle butterfly and pull it shut rather than the gentle drop in throttle position?
or temp sensor as mentioned.. although I would expect it to fail fully pretty soon and see CEL and fans on and high idle speed.
other possibility is an air leak on manifold
Simon
throttle cable snagging? the blip and off with then have vacum on the throttle butterfly and pull it shut rather than the gentle drop in throttle position?
or temp sensor as mentioned.. although I would expect it to fail fully pretty soon and see CEL and fans on and high idle speed.
other possibility is an air leak on manifold
Simon
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02 January 2009, 06:33 PM
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normally hunting idle or low idle speed for maf..
throttle cable snagging? the blip and off with then have vacum on the throttle butterfly and pull it shut rather than the gentle drop in throttle position?
or temp sensor as mentioned.. although I would expect it to fail fully pretty soon and see CEL and fans on and high idle speed.
other possibility is an air leak on manifold
Simon
throttle cable snagging? the blip and off with then have vacum on the throttle butterfly and pull it shut rather than the gentle drop in throttle position?
or temp sensor as mentioned.. although I would expect it to fail fully pretty soon and see CEL and fans on and high idle speed.
other possibility is an air leak on manifold
Simon
The wife thought there was a leaf caught in the air vent at the same time as this high idle speed incident, I noticed more wind noise than normal too .... could this point to anything? As you say, maybe a leak? - it does seem to have settled now, but still a bit high at 1100 RPM until it eventually settles at the usual 800 RPM.
02 January 2009, 08:31 PM
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possible the throttle cable needs oiling.. cable was tight in the shief and snagging and as you have used the car more it has freed up? or the throttle linkage etc..
Simon
Simon
02 January 2009, 11:03 PM
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