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Old 04-04-2003, 04:04 PM
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Join Date: Apr 2003
Posts: 3
1998 ML 320 - Engine light on and off

I have 41K miles and.. my check engine light goes on sometimes and then it goes off.

I am taking the car in for a diagnosis. Anyone else have this problem.

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Old 04-04-2003, 04:11 PM
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Join Date: Apr 2001
Location: Dallas/Fort-Worth
Posts: 5,711
Other than emission-related component failure, the easy things to look for are:

1. Have you recently fueled up with 87-grade octane?

2. Did you close the gas cap firmly (three twists followed by that ratchety "click")?
2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car
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Old 04-04-2003, 06:28 PM
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Join Date: Feb 2003
Location: Ontario, Canada
Posts: 3,160
I would assume, everytime your CEL goes on, the ECU should log a fault code in memory.
A scan of the ECU should reveal what the intermittent problem was ( is ).
2007 C 230 Sport.
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