High Revs on Cold Start
#1
High Revs on Cold Start
Hi
Does any one know why my 2002 S2000 has started to rev very high on cold starting (in excess of 3000 revs)? It's worryingly high for a few seconds such that I am now starting in First and immediately slightly engaging the clutch to lower the revs. Warm start no problem!
Help Please
Regards - Paul
Does any one know why my 2002 S2000 has started to rev very high on cold starting (in excess of 3000 revs)? It's worryingly high for a few seconds such that I am now starting in First and immediately slightly engaging the clutch to lower the revs. Warm start no problem!
Help Please
Regards - Paul
#3
Originally Posted by ohdamnitssteve,Nov 27 2007, 05:38 AM
its normal leave it alone
#7
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That's exactly what mine does. I am not worried about this. If you can't get over it, take it for a drive and get it up to temp, then go park it in a heated garage and leave it for a few hours. It should've cooled back down pretty well by then so if you go out and start it you'll probably notice normal idle.
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#8
Originally Posted by s2k dre,Nov 27 2007, 06:35 AM
2000 sounds right but 3k? how cold is it outside?
I'm most worried about these sort of revs before the oil pressure is established and oli properly circulated i.e. wear. None of my other fuel injected engines have ever reved above say 1250 rpm on start - that's meant to be one of the advantages of processor control - you can control these things.
#9
Originally Posted by MikeyCB,Nov 27 2007, 07:46 AM
That's exactly what mine does. I am not worried about this. If you can't get over it, take it for a drive and get it up to temp, then go park it in a heated garage and leave it for a few hours. It should've cooled back down pretty well by then so if you go out and start it you'll probably notice normal idle.
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Originally Posted by paoverload,Nov 27 2007, 10:00 AM
Are you saying that this is a method of resetting something to avoid the problem?
The computer is pretty well tuned, but if you also want to quickly have your car adapt to the new temps at this time of year then you can reset the computer. If you figure the ECU learns based on an average of temp/humidity conditions and your driving style, then you can immediately have it adjust to the new temp.
I don't believe that will reduce your idle though. Just use an appropriate winter oil, and don't start the engine if you don't plan to get the car up to temperature and drive it more than a short distance. That's good policy for many reasons.