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Re: Low temp hesitation (archive)

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Posted by Marcus on January 10, 2001 at 17:34:53:

In Reply to: Low temp hesitation posted by Mario on January 10, 2001 at 15:39:31:

You are right about mild hesitation when cold (and it is not good to rev up too much), but I have more than mild hesitation, and the weird thing is that the car often idles and accelerates great when stone cold (I only rev to 2500 when cold, it id a 535i, not a 528e) but then starts to hesitate or missfire after I have gone a block or so and then doesn't run better until out of the blue. If I stop the car for an errand just after it has warmed up, and the car cools again, it will run poorly again until out of the blue.

What I seem to have is poor running at a particular temperature band. It is cold here so I have not been able to do many tests yet, but if you have any insight I would appreciate it.

TIA


You know, I thought that was normal. My engine does not like to be revved when not at normal temp. It always hesitates a bit at low RPM when cold and it is my understanding that cold engines suffer a lot from revving so I always keep it under 2000 rpms until fully warmed up. This is why the new M cars have that dynamic redline that goes up as the car warms up. When I had to change my transfer pump I was suffering from high rpm fuel starvation.

???

Mario
'88 528e





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