Vibration felt on Honda Accord

Tiny
CARFREAK
  • MEMBER
  • HONDA ACCORD
I have a honda with 70K miles 5 Speed. It drives very nicely. About 9K miles ago I changed the spark plugs and wires. What I notice is when the engine is idle, there is a vibration felt in the car. It is very irritating. When I start moving, the car is fine. Acceleration is swift. I have always gotten the oil changed at 3K miles. All the other components are fine. What could be causing this vibration on the idle? Otherwise the idle is okay. But it is rough since it cause a vibration in the entire car. Only way to get rid of the vibration is if I slightly press the gas pedal to get the rev's a bit high. Please help and thanks.
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Thursday, November 2nd, 2006 AT 11:39 AM

11 Replies

Tiny
BRUCE HUNT
  • EXPERT
This was not there before the plug and wire change? If that is true, just for curiousity sake, try removing a wire from the distributor, one at a time. See if removing one of them causes little change. Even new wires can be bad and they are hard to remove and sometimes that causes them to become weak as they get stretched.

Also what are the rpm's when she is shaking?
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Thursday, November 2nd, 2006 AT 6:13 PM
Tiny
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Vibration is coming at about 750 or 800rpm. You know it started when I went to jiffy lube and they did this gas treatment thing, which I know I shouldn't have gotten. And ever after that the car is doing that. The good thing is that other then this low rpm problem, the car runs fine. No problems. But the rpms seem at tad bit low. Thanks for all your help, plz advise.
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Thursday, November 2nd, 2006 AT 9:11 PM
Tiny
BRUCE HUNT
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650 to 750 rpm is normal temp idle. At the rpm she should be smooth. When they did the gas treatment did they replace the fuel filter. Don't overlook the wires even though they were new. Does it faulter at all when it goes from low idle to getting the car to move forward?
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Thursday, November 2nd, 2006 AT 9:20 PM
Tiny
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They did not replace the fuel filter. The pick up is smooth. Because of I have a Apex II exhaust, Pace headers, and a cold air intake, I can feel "the pickup" is good. But because of the this "vibration problem" I am very dishearten. If it would improve, I can go head and change the wires and the plugs. Please advise.
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Thursday, November 2nd, 2006 AT 9:35 PM
Tiny
BRUCE HUNT
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I didn't say to run change wires, but pulling off one at a time while the engine is idling and doing its shaking thing costs nothing to learn whether one cylinder isn't firing right. I have experienced this and though hard to explain it is less noticable at higher rpm because the engine fires more often. Has your mileage dropped as well?
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Friday, November 3rd, 2006 AT 8:20 AM
Tiny
CARFREAK
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Bruce, I must share this with you. (I will comment on your inquires a bit later) This morning I was running low on gas so I went to the gas station. While filling up the tank I decided to take a close look at the wires as you had suggested. And to my amazement, one of the wires, from the distributer cap was only half way in. I tried to tighten it but it wouldn't go in all the way. So I took a closer look to see that it was all corroded and stuff. I was like bingo. My gas miileage has definately dropped as well, I used to get close to 320 Miles on a full tank, now I hardly get 250. So I tried to push it all the way in but the virabation is still there. Now what do you suggest, should change the distributer cap with the wires, or should I just try replacing that one wire first? But it is amazing how you were able to diagnose this from so far away. Please advise, and as always, lots of thanks.
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Friday, November 3rd, 2006 AT 8:53 AM
Tiny
BRUCE HUNT
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If that wire was really not connected and once you did connect it and no difference was felt can you find a wire from someone else to put on just to try it out and see if you get better running.
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Friday, November 3rd, 2006 AT 4:31 PM
Tiny
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Bruce- This weekend I managed to find a good wire, (an old one I had- the connectors were in very good shape) I connected that one instead. And still the same issue on idle. A vibration is felt in the steering wheel and overall the car.
Can this be one of the fuel injectors (bad)
Any electrical component?
A computer chip bad?
Please advise, and thanks.
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Monday, November 6th, 2006 AT 9:27 AM
Tiny
BRUCE HUNT
  • EXPERT
I would check the timing next.
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Tuesday, November 7th, 2006 AT 6:39 PM
Tiny
CARFREAK
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You mean the timing belt?
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Tuesday, November 7th, 2006 AT 9:14 PM
Tiny
BRUCE HUNT
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No I would check the engine timing itself. You disable the computer with the jumper on the clip located under the dash and then hook up the timing light.
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Wednesday, November 8th, 2006 AT 10:10 AM

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