Diagnosis Chart

CONDITION PROBABLE CAUSE


A knock at low speeds a. Worn drive axle CV or TRI-POT
joints.
b. Worn side gear hub counterbore.

Noise most pronounced on turns a. Differential gear noise.

Clunk on acceleration or a. Loose engine mounts.
deceleration b. Worn drive axle inboard TRI-POT
joints.
c. Worn differential pinion shaft in case.
d. Side gear hub counterbore in case worn oversize.

Clicking noise in turns a. Worn outboard CV joint.

Vibration a. Rough wheel bearing.
b. Bent drive axle shaft.
c. Out of round tires.
d. Tire unbalance.
e. Worn CV joint in drive axle shaft.
f. Incorrect drive axle angle. (Trim height)

Noisy in Neutral with Engine a. Worn input gear bearings.
Running b. Worn clutch release bearing.

Noisy in First Only a. Chipped, scored, or worn first-
speed constant-mesh gears.
b. Worn 1-2 synchronizer.
CONDITION PROBABLE CAUSE


Noisy in Second Only a. Chipped, scored, or worn
second-speed constant-mesh gears.
b. Worn 1-2 synchronizer.

Noisy in Third Only a. Chipped, scored, or worn third-
gear constant-mesh gears.
b. Worn 3-4 synchronizer.

Noisy in Fourth Only a. Worn 3-4 gear synchronizer.
b. Chipped, scored, or worn fourth-speed gear or output gear.

Noisy in Fifth Gear Only a. Worn 5th gear synchronizer.
b. Chipped, scored, or worn fifthspeed gear or output gear.

Noisy in Reverse Only a. Chipped, scored, or worn
reverse idler gear, idler gear bushing, input or output gear.

Noisy in All Gears a. Insufficient lubricant.
b. Worn bearings.
c. Chipped, scored, or worn input gear (shaft) and/or output gear (shaft).

Slips out of Gear a. Worn or improperly adjusted
linkage.
b. Shift linkage does not work freely.
c. Bent or worn cables.
d. Input gear bearing retainer broken or loose.
e. Worn or bent shift fork.

Leaks Lubricant a. Fluid level indicator not
seated in fill port, causing fluid leakage at vent plug.
b. Worn axle shaft seals.
c. Excessive amount of lubricant in transaxle.
d. Loose or broken input gear (shaft) bearing retainer.
e. Worn input gear bearing and/or lip seal damaged.
f. Lack of sealant between case and clutch cover or loose clutch cover.