There is one cause for this. If the throttle body is moved or adjusted in any way this will cause the judder when engaging gears.
Yes it can
Possibly a worn engine and/or gearbox mounting or exhaust mounting
sounds like the right front motor mount .i replaced mine and the clunking sound went away
The bearing at the wheel end of the shaft is probably crackede or broken. Replace it.
Of course it can. It depends on how worn the mount is and how far the engine is lifting on acceleration. It can cause hard shifting, clunking. Not to mention it can damage your hood if the engine torques enough to leave the mount and strike the hood. Motor mounts should be repaired as soon as possible.
Clutch Judder is caused by the clutch components and flywheel not meeting concentrically. The friction surfaces rub concentrically causing a low frequency vibration that is transmitted to the car via the engine/gearbox mountings and drive shafts. Causes can be 1) Mis-aligned clutch 2) Clutch wear/broken 'finger' springs 3) Condensation on the flywheel (usually happens on colder nights in which case judder should only last until the condensation has evaporated) 4) Contamination on the clutch such as oil from a leaking gland. Case 1 will require the clutch to be re-aligned Case 2 will require a new clutch Case 3 may happen frequently on colder mornings, but judder will disappear 5 mins into driving. Case 4 Replacement of the clutch plates Driving continuously with judder may cause damage/increase wear to engine and/or gearbox components. If judder persists take your vehicle to a garage as soon as possible.
Possibly the sway bar bushings?
You probably need your bearings repacked
You can tell if the transmission, in your 1998 Chevy Malibu, is going bad. If there is a whining or clunking noise. The transmission might cause your engine to install when you are stopped with your foot on the brake.
It could be worn struts, worn bushings, worn ball joints or tie rods. Just jack it up and find out which parts are loose.