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Originally Posted by artbuc
After replacing TB I have a low frequency rumbling vibration which sounds like an exhaust leak. Only occurs when car is in gear, much worse when cold.
Had wife hold foot on brake and put trans in R. Gave a few revs and engine looked like it wanted to jump out with rear side (closest to firewall) lifting up seemingly unrestrained. Looks like rear engine mount is shot.
Don't understand connection between TB and this problem but guess that removing crank pulley bolt by bumping engine put the final blow on an already deteriorating bushing. Or, maybe just a coincidence.
In searching this and other forums it appears the rear mount is a mother to replace requiring disconnecting steering column and jacking engine.
Has anyone replace rear mount? Any tips on how to? Thanks.
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Ok, I'll answer my own question. Put car up on jackstands and remove right front wheel. Support engine weight with jack. Remove four 14mm nuts holding rear mount bracket and main bolt connecting mount bracket to mount. Jack up engine a few inches and you can maneuver the bracket out of the way. At this point you must drive out the old bushing (I haven't done this part yet). My old bushing doesn't look torn but it has lost its omph. You can easily wiggle it around with your fingers - it is offering little to no resistance.
Removing the front mount is much easier. Remove bottom splash guard, top radiator hose (drain out a little coolant first) and electric cooling fan. Remove main connecting bolt, two bracket hold down nuts and one bracket hold down bolt. Jack up engine a couple inchs and it comes right out. My front mount looks ok to me but I am going to replace it anyway as it seems like good practice to replace front & rear mounts in pairs.