Classic/Antique Car Repair/check engine light

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Expert: - 4/13/2008


Question
BRAD, i have a 1988 560sl mercedes. when im crusing around town my check engine light comes on, then i can get out and run 50mph+ and it goes out till i start running low speeds again. thanks for your help,,jason

Answer
Is this a yellow or red light? If it is red it could be that you are showing low oil pressure at low engine speed. If that is the case you will need to get a mechanical gage connected to test the engines oil pressure. If the engine shows good pressure then replace the oil pressure sender. If the light is yellow then you have a problem in the Lambda system and will need a computer check.
Brad

Classic/Antique Car Repair

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Brad Sears

Expertise

All automotive including antique and collectible. However if the car has been modified I can only answer in general terms and maybe get you pointed in the right direction.

Experience

Automotive tech instructor. Syndicated auto columnist 1970's though the early 1990's. Syndicated auto radio talk show, Ask Brad About cars, CBS Radio 70's through 90's TV Show "Last Chance Garage" 1980's PBS-TV syndicated. Auto instructor for the following companies: Fram Autolyte Holly Carter AMF Ford Motor University Of Conn Blue Hills Technical School Sugar River Technical Center Grew up in a family garage in Needham Mass and turned wrenches from the age of 14.

Publications
Manchester Union Leader, Nashua Telegraph, Motor Service Magazine, Yankee Magazine, Popular Mechanics (Saturday Mechanic early 80's), Los Angeles Times, New York Times, and lots more.

Education/Credentials
More than I care to remember. Basically Franklin Technical Institute in Boston, Northeastern University, Fitchburg State Teachers College, Tufts University, and a lot of factory schools along the way.

Awards and Honors
Moto Award winner. And much more.

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