For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Inspect the propeller shaft for the following conditions:

• | Bending

• | Damage

Is the propeller shaft bent or damaged?

--

Go to Step 2

Go to Step 3

2 | Replace the propeller shaft. Is there still roughness or vibration? | -- | Go to Step 3 | System OK
3 | Inspect for undercoating on the propeller shaft. Is there undercoating on the propeller shaft? | -- | Go to Step 4 | Go to Step 5
4 | Remove the undercoating from the propeller shaft. Is there still roughness or vibration? | -- | Go to Step 5 | System OK
5 | Inspect the tires for the following conditions:

• | Unbalance

• | Vibration during vehicle operation at a speed of 48-80 km/h (30-50 mph)

Do the above conditions exist?

--

Go to Step 6

Go to Step 7

6 | Balance the tires. Is there still roughness or vibration? | -- | Go to Step 7 | System OK
7 | Inspect the universal joints for tightness. Are the universal joints tight? | -- | Go to Step 8 | Go to Step 9
8 | If the universal joints are equipped with snap rings, tap on the yokes with a hammer in order to free up the universal joints. If the joints cannot be freed up or if the joints feel rough, replace the joints. Is there still roughness or vibration? | -- | Go to Step 9 | System OK
9 | Inspect the universal joints for wear. Are any of the universal joints worn? | -- | Go to Step 10 | Go to Step 11
10 | Replace the worn universal joint(s). Is there still roughness or vibration? | -- | Go to Step 11 | System OK
11 | Inspect the fixed yoke for bending and inspect the flange for excessive runout. Does either of the above conditions exist? | -- | Go to Step 12 | Go to Step 13
12 | Replace the fixed yoke. Is there still roughness or vibration? | -- | Go to Step 13 | System OK
13 | Inspect the propeller shaft for lack of balance. Is the propeller shaft unbalanced? | -- | Go to Step 14 | Go to Step 15
14 | Inspect for the missing balance weight on the propeller shaft. Rotate the shaft 180 degrees on the fixed yoke. Is there still roughness or vibration? | -- | Go to Step 15 | System OK
15 | Inspect the universal joint for incorrect angle placement. Is the universal joint at an incorrect angle? | -- | Go to Step 16 | Go to Step 17
16 | Correct the universal joint angle. Is there still roughness or vibration? | -- | Go to Step 17 | System OK
17 | Inspect the yokes and the flanges for the following conditions:

• | Damage

• | Distortion

Are the yokes and/or the flanges damaged or distorted?

--

Go to Step 18

Go to Step 19

18 | Replace the yokes and/or the flanges. Is there still roughness or vibration? | -- | Go to Step 19 | System OK
19 | Inspect the shaft for yokes that are out of phase. Are the yokes out of phase on the shaft? | -- | Go to Step 20 | Go to Step 21
20 | Replace the propeller shaft if the propeller shaft is a one-piece shaft. Reindex the propeller shaft if the propeller shaft is a two-piece shaft. Is there still roughness or vibration? | -- | Go to Step 21 | System OK
21 | Inspect for driveline vibration during vehicle operation at a speed of 80 km/h (50 mph). Is there driveline vibration at the specified speed? | -- | Go to Step 22 | --
22 | Inspect the propeller shaft runout. Inspect for missing balance weights on the propeller shaft. Is there driveline vibration at the specified speed? | -- | -- | System OK