My car was down the past 3 weeks for belts/alternator replacement. Back up and running again this past weekend. However, when the car sits for a minute at a traffic light, the rpms drop to around 600 and the car will not immediately accelerate. Eventually the car picks up speed and all is well again.

Is there a possible problem with the alternator installation? Should I try bumping up the idle speed?

Any help is greatly appreciated.

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Geotiger

'85 300D Turbo MB

The alternator would not cause a problem. Your fuel injection is entirely mechanical. It's probably just coincidence that this occurred at the same time. I would look more to a fuel filter probably needing replacement.

On the other hand, how long was your car down? It may just need a little running to get a few of the cobwebs out. Altering the idle speed would only mask what the real problem is, and usually only temporarily.

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Sam

84 300SD 350K+ miles ( Blue Belle )

....the Italian Tuneup...!!!

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Diesels:
'85 300D, "Max, Blue Benz", 155K, 27.0 MPG
'84 190D 2.2, "Eva, Brown Benz", 142K, 40.2 MPG
'77 240D (parts car)
'67 Eicher ES 202 Tractor "Otto" (2cyl, Air Cooled, 30HP)
Gassers:
'94 Ford F-150, "Henry", 170K (300 Six) 17.5 MPG
'85 190E 2.3, 148K....Parts Car
'58 Dodge W300M Powerwagon (Flat Fenders) Less than 10 MPG

Thanks for the ideas. I've been treating my fuel tank with Star-Tron for the dreaded fungus, and I'd considered that maybe the problem might be due to the fuel filter. Based on my past luck though, I was convinced it had to be with my alternator replacement. I'll try a new filter when I get home

As for the Italian tune up, isn't that the only way to drive an open interstate?

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Geotiger

'85 300D Turbo MB