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Check engine light....only when humid

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Old 12-26-2004, 06:01 PM
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Exclamation Check engine light....only when humid
Any idea why the CEL comes on only when its humid outside??

2000 ML320 ~60k miles

Fuel filter?
Distributor cap?
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Old 12-26-2004, 10:00 PM
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If you don't know what the fault codes are, there is no reason to start throwing parts at it. Humidity likely has nothing to do with your problem. Fuel filters, among other parts, are part of normal maintenance. Its not something you ignore until the check engine light comes on. Replacing a filter is not going to fix your problem. You will need to have it diagnosed by a professional.
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Old 01-24-2005, 08:02 PM
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is there any way to read the fault codes without taking it to the dealership?
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Old 01-24-2005, 08:10 PM
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how to install fog light on 2000 ml
how can i install foglights on 2000 ml the ones inside the headlights not in the bumper. heard dealer has to activate computer or something
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Old 01-25-2005, 06:24 PM
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Originally Posted by bigal8thomas
how can i install foglights on 2000 ml the ones inside the headlights not in the bumper. heard dealer has to activate computer or something
I'm sorry, i think yo meant to start a new thread.
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Old 01-25-2005, 07:25 PM
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2014 RX 350 F Sport, 2007 Scion tC, 2000 ML 430 Money Pit Finally Gone! Oh Happy Day!
Originally Posted by skiier3_9
is there any way to read the fault codes without taking it to the dealership?
Free at AutoZone or $90.00 @ the dealer.
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Old 01-26-2005, 12:01 AM
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E 63S Wagon Renntech, E55 Renntech, SL65, SL 55 030, ML, bunch of old ones--they come, they go...
Likly suspects...
Purge valve...
Gas cap...
Fuel pump if it doesn't have the latest one and associated lines...
Hope this helps.
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