vibration at idle

[hubbadub00]

i have a 2000 gl it has a 2.4 with about 145000 miles and at idle it has a vibration bad enought to shake the steering wheel but just off idle it goes away and runs great i have changed the plugs and it did not change the only code it has is a knock sensor code but i think this maybe caused by the vibration could this be cause by a bad motor mount? any thought or ideas would be helpful thank you

[[ion] C2]

vacuum leak (probably at intake manifold to head, or MAP sensor)

regarding mount, push the car backwards while it's in park and see how much the engine rocks

what exact code are you getting? if the knock sensor is bad, replace it! it might be causing a timing retard. i'm too lazy to open HPTuners and see when the knock sensor is actively causing timing to retard though. it might not use knock data at idle.

[a.graham52]

http://www.aleromod.com/forums/showthread.php?t=30095

i vote bad engine mount for the shaking issue. been though it before but never fixed it. very unbalanced engine by todays standards.

[hubbadub00]

so should i check for the vaccum leak at manifold with throttle body cleaner ? and is there a mount that goes bad before the others or just never know i know there is what 4 mounts?