Check Engine Light On

I own an 91 Honda Accord, at times the check engine light is on and the car vibrates little strong.

This is all happened after I did a service in a local shop who gave me free transmission flush?

I would suggest that you buy a repair manuel. It will tell you how to pull the codes that is setting your CEl (check engine light). Once you have that info then post the code numbers and someone here should be able to tell you what to do.

This site will help you:

That CEL (check engine light) is just a kid in class waving her hand trying to get you attention because she has the answer. You need to have the codes read. Some places will read them for FREE. Try Autozone or Advanced Auto Parts. Get the exact code (like P0123) not just their translation into English and post it back here.

Regarding warning lights:

  1. if the coolant temp light comes on, shut off the engine ASAP

  2. if the oil warning light comes on, shut off the engine ASAP

  3. if a FLASHING MIL/CEL comes on, shut off the engine ASAP

    ASAP means driving to the berm of the highway right now and not waiting for the next exit.

But if the MIL/CEL is not flashing, then it’s not an urgent indicator.