why did my check engine light come on after I had my spark plugs changed and added gas treatment
5

Asked by eijna127 Jul 08, 2015 at 10:31 AM about the 1999 Mercedes-Benz M-Class ML 320 4MATIC

Question type: Maintenance & Repair

1999 ML320 170K - car will only start after 2nd try when turning the key, now check
engine light is on after tune-up- the car is not running hot but slow.

4 Answers
5

eijna127 answered 9 years ago

because the car was not turning over the 1st time I tried starting the car so my mechanic said put gas treatment- I only use 93 supreme

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705

Wade answered 9 years ago

Go to AutoZone and have them scan for the code for free and see what the cause is... Then you willl have a good starting point... It could be a number of things going on with your car...

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