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I have a problem with my Civic, particularly with the engine. Sometimes when I drive my civic, I feel the engine vibrates so hard that I can feel the whole car vibrate.

I went to my mechanic at Bucky's and said that the spark plug was burned out so he replaced it and for two weeks my engine did not vibrate. After the two weeks, though, the engine starts to occasionally vibrate when I drive it. I went to Bucky's again, and he said that there's nothing wrong with the spark plugs no sign of wear and the engine seems fine. He said he cleaned the exhaust pipe. Though, my engine still continues to vibrate at times.

I went to a Honda Maintenance and Repair and they said that there's nothing wrong with the engine nor the spark plug. Everything looks fine, but the mechanic drove my Honda with me to try and duplicate what I'm experiencing but at that time the engine did not vibrate and I told him that the engine vibration sometimes vibrate.

One thing is for sure, every time I drive my Civic DX 2000, when I idle and stop at a red light sometimes it does vibrate and somehow my engine is working too hard to climb to 60-70 MPH (maybe the replaced spark plug) that sometimes the engine vibrates so roughly, that I'm even scared to go to 70 mph.

So any thoughts you guys? Thank you in advance for reading this post.

 
Rep Power: 367

any differences in his driving style compared to yurs?

 
Rep Power: 200

u said spark plugs
but what about distributor caps and rotors,
wat about spark plug wires

 
Rep Power: 0

The driving style of the mechanic is like mines when I'm at the free way, he just speed and then gradually stops and engine did not vibrate.

 
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The Honda Mechanic checked everything and he said every looks fine there's no wear yet...he said the replaced spark plug and the wire was sufficient but he goes on to recommend Honda certified parts (did not take it since its just marketing thing).

 
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Sorry I'm not an car guru or expert. I did observe something, every time I turn my heater on even just for a tiny bit, the engine's vibration is a little more frequent and the vibration is rougher...

 
Rep Power: 200

voltage drop heater motor uses alot of amps to run
how about checking the ground
might be rust or corrosion