car rumble/vibrations when idle?

ballorfall · 05-15-2008, 03:46 AM

so i just got my Si back from the shop after that fender bender last month. The total cost was around $2,600 to fix. I have a question for you guys. Does your car kinda rumble when it is idle at a red light in neutral? My rumble is really light but i can feel it in my lower back and hand if i rest it on the hand rest on the door. My GF says she can't feel anything but i can. Its not visible by any means. I forgot if it is normal for the car to have a slight rumble or vibration because its been a while. Do you guys feel anything on your car?

***07mugencivic*** · 05-15-2008, 03:54 AM

how bad was the fender bender...did it move any motor mounts

ballorfall · 05-15-2008, 04:20 AM

No i dont think so. It was basically my right fender was replaced and bumper, he hit my front right corner, the hood wasnt damaged. maybe i should look at the motor mount?

Duce2k · 05-15-2008, 10:38 AM

I don't feel any vibration or rumble at idle, maybe it's your a/c kicking on and off, try it with the system turned off, even if it's just the fan. Also you might have some bad gas in there causing a rough idle

nayilsi · 05-15-2008, 01:05 PM

^^^

with AC off

u are not supposed to feel vibration from anywhere other than the steering

***Si2Typ3R*** · 05-15-2008, 01:27 PM

I have experienced the rumble you notice. Mine comes and goes, mostly when the fan kicks on and off with the a/c. It's not major, but then again I do have 43k on my Si. Mileage will effect smoothness in idle as well. Maybe try some fuel system cleaner....?

ballorfall · 05-15-2008, 04:53 PM

My car only has around 4k. I never put anything lower than 91 octane, last fill up was with mobil 91 octane although the gas was 1 month old because it was in the shop.

05-15-2008, 03:46 AM	#1 (permalink)
ballorfall Senior Member Join Date: May 2007 Location: California Posts: 109 iTrader: 0 / 0%	car rumble/vibrations when idle? so i just got my Si back from the shop after that fender bender last month. The total cost was around $2,600 to fix. I have a question for you guys. Does your car kinda rumble when it is idle at a red light in neutral? My rumble is really light but i can feel it in my lower back and hand if i rest it on the hand rest on the door. My GF says she can't feel anything but i can. Its not visible by any means. I forgot if it is normal for the car to have a slight rumble or vibration because its been a while. Do you guys feel anything on your car?

05-15-2008, 03:54 AM	#2 (permalink)
*07mugencivic* Whos The Whore NOW Join Date: Feb 2007 Location: Southern CA Age: 24 Posts: 70,639 Tony iTrader: 4 / 100%	how bad was the fender bender...did it move any motor mounts __________________

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05-15-2008, 04:20 AM	#3 (permalink)
ballorfall Senior Member Join Date: May 2007 Location: California Posts: 109 iTrader: 0 / 0%	No i dont think so. It was basically my right fender was replaced and bumper, he hit my front right corner, the hood wasnt damaged. maybe i should look at the motor mount?

05-15-2008, 10:38 AM	#4 (permalink)
Duce2k Senior Member Join Date: Apr 2007 Location: Houston, TX Posts: 2,713 iTrader: 1 / 100%	I don't feel any vibration or rumble at idle, maybe it's your a/c kicking on and off, try it with the system turned off, even if it's just the fan. Also you might have some bad gas in there causing a rough idle

05-15-2008, 01:05 PM	#5 (permalink)
nayilsi Senior Member Join Date: Jul 2007 Location: I have to return some Video Tapes. Posts: 6,259 iTrader: 0 / 0%	^^^ with AC off u are not supposed to feel vibration from anywhere other than the steering

05-15-2008, 04:53 PM	#7 (permalink)
ballorfall Senior Member Join Date: May 2007 Location: California Posts: 109 iTrader: 0 / 0%	My car only has around 4k. I never put anything lower than 91 octane, last fill up was with mobil 91 octane although the gas was 1 month old because it was in the shop.