<!-- from fixya rte -->How do I change engine mount rubber - Cars & Trucks

Just doing a visual inspection on an engine mount is not good enough. The rubber mount may just be bad or the engine mount attach to the frame is broken. If mounts are fine then engine balancer is deteriorating.

With car in drive/reverse and foot hard on brake if the engine moves when gas pedal is depressed and quickly released in both D&R, then that mount/mounts is defective...

Engine mount should be replaced if:

1) The hard rubber surface is covered with heat check cracks.

2) The rubber is separated from the metal plate of the engine mount.

3) The rubber is split through the center of the engine mount



The transmission case will crack or break if either engine mounts or transmission rear mount is broken...Here is a GM Service bulletin addressing the issue:

#02-07-30-024B



The transmission mount (see drawing) test:

>Raise and support the vehicle

>Raise the transmission/transaxle in order to remove the weight from the transmission/transaxle mount and create slight tension in the rubber.

Replace trans. mount if anyone of the three conditions listed above exist...saailer







I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

Check your two engine mountings and the pitch control bar underneath. The right hand, oil filled mount has a tendency to collapse. The left mount is a solid rubber mount which can be checked from the underside, using a torch.

Simple test should show broken mounts. Place the tranny in drive and with the brakes full on rev the engine and watch for excessive engine movement sideways. Check rear engine mount (rear axle drive) try to lift the rear of the tranny and see the movement in the rear engine mount. For side mounted engines the mount bolts should be in the center of the rubbers . If they are to the bottom of the rubbers , the mounts need replacing.

Hey,, The problem may not be relate to the wheels at all. Fro what your telling me it sounds like a broken engine mount. This will cause the problem. Basically the engine mount hols the engine to the vehicle and the rubber in it dampens the vibrations. With the rubber broken you will feel the vibrations on the pedal..

However to mention the can be another reason, This one is very unlikely here seeing as the pedal vibrates but just in case check your Alignment and Cambering.

basically take the vehicle to a mechanic to locate and replace the engine mount , ore than likely is the rear mount or the one closest to the driver. You can do this yourself if you like,

1.) Locate the broken Mount (you will see the rubber in the mount broken)
2.) Use a Car jack (the ones you use the change tires) , and use it to lift the engine up to reduce the pressure on the mount.

3.) remove the broken mount and replace it.

Its just 4 bolts, 2 on the engine 2 on the mount to the car body. You will need to get a torque wrench and a lever (cast iron metal pipe will work fine) to add extra leverage to turn the bolts off.

did you change both or just one ? as its best to change both at the same time as when you jack up engine to put new rubber on the other side has to twist so you can do this best to change both at same time and a new rubber can take this action.

if they put after market enginemounts-they dont work cause the rubbrs to hard --u need original--ask um aboutit

No, if you have an engine hoist they are very easy to change (1 nut and two bolts per engine mount, two bolts for the transmission mount). The trans mount rubber can be changed with just a floor jack.

The easiest way to check for broken engine mount is to put one foot on the brake and push the throttle to watch the engine move. the mounts are located on the bottom of the engine
about where the transmission and engine are bolted together. Make sure that you test in foward and reverse,because they might both be broken. `Engine oil leaks on the rubber mounts and softens the rubber on the mounts makes the go bad . Also hard acceleration is hard on the mounts

You have to replace the whole mount. They aren't that expensive. I suppose you could replace just the rubber, but they don't sell them that way.