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Registered User
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Minor problem at startup
1987 NA 68,000 miles, well maintained.
I have recently had to stop driving my 944 daily since I am doing a 140 mile round trip commute each day. I still drive the 944 every weekend. At startup when it is cold it now idles very low for about 4 seconds, then the Idle goes up to 1200 rpm and slowly drops to 800 rpm as expected. If I give it gas when it is idling low it starts to stall so I am assuming that it is running lean for those few seconds. Other than this it runs really well. A couple of years ago I replaced the DME temp sensor, cleaned the ICV and replaced the oxygen sensor. Most other common replaceable parts have been replaced over the last few years - plugs, wires, coil etc. Any ideas on why the idle is doing this at cold start? I am tempted to put the old DME temp sensor back in as a first test.
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1987 944 Summer 2006 E90 Winter |
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08-12-2017, 11:10 AM
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Registered User
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This morning it occurred to me that I was leaving the ac on. After starting it behaved better when I turned the ac off for the first few seconds. Maybe the extra load of the compressor is a problem at start up. I know the ICV is responding a bit slow responding. Next time I will start it with the ac off.
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1987 944 Summer 2006 E90 Winter |
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08-13-2017, 06:41 AM
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Porsche 944
