Diagnostic Procedure

WARNING: This page is about a different car, the 2008 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.

STEP 1. Check the idle speed.
Q: Does the idle speed meet the standard values?

YES : Go to Step 2.

NO : Refer to IDLE SPEED CHECK .
STEP 2. Check whether the transaxle and engine mount is loose or damaged.
Q: Are the transaxle and engine mount loose or damaged?

YES : Tighten or replace the part. Then go to Step 7.

NO : Go to Step 3.
STEP 3. Check that the oil level is up to the lower edge of the filler plug hole.
Q: Is the oil level up to the lower edge of the filler plug hole?

Fig 1: Checking Oil Level
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

YES : Go to Step 4.

NO : Refill DiaQueen NEW MULTI GEAR OIL API classification GL-3, SAE 75W-80. Then go to Step 7.
STEP 4. Check for the specified oil.
Q: Is the specified oil DiaQueen NEW MULTI GEAR OIL API classification GL-3, SAE 75W-80?

YES : Go to Step 5.

NO : If in doubt, replace the oil. Refer to TRANSMISSION OIL CHANGE . Then go to Step 7.
STEP 5. Remove the transaxle. Check the end play of the input and output shafts.
Q: Does the end play of the input and output shafts meet the standard value?

YES : Go to Step 6.

NO : Adjust the end play of the input and output shafts. Then go to Step 7.
STEP 6. Disassemble the transaxle. Check the gears for wear and damage.
Q: Are the gears worn or damaged?

YES : Replace the gears. Go to Step 7.

NO : Go to Step 7.
STEP 7. Retest the systems.
Q: Is the noise or vibration still there?

YES : Return to Step 1.

NO : The procedure is complete.