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Re: "wet start" problem - 525ia (archive)

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Posted by nomar on February 23, 2000 at 00:39:38:

In Reply to: Re: "wet start" problem - 525ia posted by Shaun Kelly on February 22, 2000 at 15:20:33:

: I've had the same thing happen to me as well. I've noticed that if I start the car and only run it for a minute and back it out of the garage and park it in the driveway to wash it and then shut it off right away; then after washing and starting and pulling back in the garage for the night, rough idle and runs like crap when starting the next day. I've found that if I let the car run a little after starting and backing it out and again after washing and pulling it in, no problem. It will do this even if I haven't washed it, only moving car out and back in to clean out the garage. Let her idle for a while and that should help. Maybe something with the oxygen sensor. Maybe somebody else can give a technical explination. I just let mine idle a little when moving her or even take a little trip around the block.

: Shaun Kelly,
: '94 525ia 54,000mi

: : Sometimes I wash my '94 525ia in the evening. The next morning the car will idle like crap for a couple minutes. Obviously humidity or condensation is causing something to get wet.

: : Anyone have a clue what the actual problem is? No codes are getting set. I'm not washing the motor. The car is garaged FWIW.

: : TIA!

: : Rob G

you guys should frequent the 6-series site a little more often. They have some better advice than the 5 group (no offense). I had the same problem with my 6 (similar engine). Here is something fun to try. car gets wet? car idles like crap? Try disconnecting the air filter hose going to the air flow meter. You should be able to see the flap that, if working properly, opens and closes when accelerating or slowing down. With car started try pushing the lid open a little bit and seeing if idle improves if it does you AFM might be bad or just need adjustment. Moisture causes drag between the AFM and that aluminum flap. After it runs for a while the car will be fine. Not saying this is the cause but its worth a look at. Not a common 6 problem just a common AFM problem. Good luck.


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