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Old 11-19-2008, 07:57 PM   #1
InfiniteDice
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Strange issue.

Ok so I started my car this morning (was in sudbury -10C overnight) ... was running a bit rough... started driving and it was like the on/off choking out of power syndrome... i pulled over, opened the hood and noticed dark smoke out the tailpipe....

I let it warm up more and held the rpms at 2k... all of a sudden the engine jumps to 4k and sounds normal... no more black smoke...

I'm guessing the TPS is gunked with oil and in cold weather it sticks in the open position - therefore running rich. that or it's the AFM somehow.

Ran like a charm all the way back to st kitts.

any other ideas?

Mike.
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Old 11-19-2008, 08:26 PM   #2
5thseries
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Have a look at your intake boot.. any kind of rip in it.. that is usually the result of insufficant air fuel mixture..

Maby as the car heated up.. it resealed the rip.. i have no idea.. just making a guess.. something like this happen to my brothers car.. but his intake boot was cracking up.
Changed it.. and she ran like a charm =)
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Old 11-19-2008, 09:40 PM   #3
InfiniteDice
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mine is new.... but i think it's a mixture problem...
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Old 11-19-2008, 09:50 PM   #4
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Sounds like a thermo sensor to me. Either coolant temp sensor or the cold start sensor. That sensor tells the car to run super rich at cold temps. Probably over zealous / out of spec.

The bentley and haynes have the procedures to test.
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Old 11-19-2008, 10:11 PM   #5
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yea cold start maybe pumping to much fuel in if it went away when it warm
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Old 11-19-2008, 10:36 PM   #6
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Eta or "i" motor?
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Old 11-20-2008, 07:21 AM   #7
InfiniteDice
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eta/i hybrid.... 2.7i Motronic 1.3 - no cold start. Thanks for the thermo sensor idea... I have 3 or so kicking around so i'll try it.
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Old 11-20-2008, 10:41 AM   #8
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Haynes or bentley have resistance values to test for too.
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Old 11-21-2008, 02:31 AM   #9
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how's the oil in the car? regular oil thats been in a motor to long can cause the smoke and idling problem in the cold at start up.
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