Question about 2003 Volkswagen Beetle TDI

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Check engine light blinks

Drove the car from MO to WA--no problems. Everythings great for 3 days & then out of no where "check engine light" & rough driving. Engine never cuts out just a little rough. I discover that son driving car has only been putting "regular" gas in car. Car low on gas, I take to station --fill w/ "premium". Also add 1 bottle of "engine cleaner". Drive car around. Use 1/4 tank of gas. Seems better, less rough, but engine light still come on.
Ogg not know what to think. Is possible that there be engine belt slipping? Is possible engine "gunked up by "cheap" gas? Car drive mostly good now. Why engine light not go off? Is Ogg possibly do engine damage by continuing to drive? Please advise.

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My suggestion is to get the fault codes stored in the car's ecu read by a VW approved garage. That will tell them what "was" wrong. Once a fault has occurred the check engine light will probably stay on until the warning has been cancelled using VW software.
As for the grade of gas used in the car, the users manual will tell you that - it might also be written inside the filler cap.

I wouldn't recommend further use of "engine cleaner" - it might do more harm than good.

Go get the codes read and then you'll know for sure.

Hope this helps. D

Posted on Jul 02, 2008

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