For 1990-2009 cars

Complaint/Condition | Possible Cause | correction
--- | --- | ---
Knock at Low Speeds |

• | Worn drive axle joint

• | Worn side gear or pinion gear bores

• | Inspect drive axle joint and replace if necessary.

• | Inspect differential case and replace if necessary.

Noisy Around Turns | Worn differential gears | Inspect differential gears and replace if necessary.
Clunk or Acceleration or Deceleration |

• | Loose engine mounts

• | Worn inboard drive axle joint

• | Worn differential pinion shaft

• | Worn side gear hub counterbore

• | Inspect engine mounts and tighten if necessary.

• | Inspect inboard drive axle joint and replace if necessary.

• | Inspect differential pinion shaft and replace if necessary.

• | Inspect side gear hub counterbore and replace if necessary.

Click Noise On Turns | Worn outboard drive axle C/V joint | Inspect C/V joint and replace if necessary.
Noisy in Neutral With Engine Running |

• | Worn input gear bearing

• | Worn speed gear bearing

• | Worn bearing races

• | lnspect bearing and replace if necessary.

• | lnspect bearing and replace if necessary.

• | lnspect bearing race and replace if necessary.

Noisy in First Gear Only |

• | Worn, chipped, or scored 1st speed constant-mesh gears

• | Worn, shipped, or scored 1st/2nd synchronizer

• | lnspect gears and replace if necessary.

• | lnspect synchronizer and replace if necessary.

Noisy in Second Gear Only |

• | Worn, chipped, or scored 2nd speed constant-mesh gears

• | Worn, chipped, or scored 1st/2nd synchronizer

• | lnspect gears and replace if necessary.

• | lnspect synchronizer and replace if necessary.

Noisy in Third Gear Only |

• | Worn, chipped, or scored 3rd speed constant-mesh gears

• | Worn, chipped, or scored 3rd/4th synchronizer

• | lnspect gears and replace if necessary.

• | lnspect synchronizer and replace if necessary.

Noisy in Fourth Gear Only |

• | Worn, chipped, or scored 4th speed constant-mesh gears

• | Worn, chipped, or scored 3rd/4th synchronizer

• | Worn, chipped, or scored output gear

• | Worn, chipped, or scored output gear

• | lnspect gears and replace if necessary.

• | lnspect synchronizer and replace if necessary.

• | lnspect gear and replace if necessary.

• | lnspect gear and replace if necessary.

Noisy in Fifth Gear Only |

• | Worn, chipped, or scored 5th speed constant-mesh gears

• | Worn, chipped, or scored 5th synchronizer

• | Worn, chipped, or scored output gear

• | lnspect gears and replace if necessary.

• | lnspect synchronizer and replace if necessary.

• | lnspect gear and replace if necessary.

Noisy in Reverse Only |

• | Worn, chipped, or scored reverse speed constant-mesh gears

• | Worn or damaged output gear

• | lnspect gear and replace if necessary.

• | lnspect gear and replace if necessary.

Noisy in All Gears |

• | Fluid level low

• | Worn or damaged wheel bearings

• | Worn, chipped, or scored input/output shaft gear

• | Worn output gear bearing

• | Loose shift rail guide bolt

• | Worn, chipped, or scored 1st, 2nd, 3rd, 4rd, 5th, or Reverse gears.

• | Add fluid to proper level.

• | Inspect wheel bearing and replace if necessary.

• | Inspect gear and replace if necessary.

• | Inspect output gear bearing and replace if necessary.

• | Tighten shift rail guide bolt.

• | Inspect components and replace as necessary.

Slips Out of Gear |

• | Loose transaxle mounts

• | Bent or worn cables

• | Broken or loose input gear bearing retainer

• | Worn or bent shift fork

• | Dirty clutch housing and engine

• | Stiff shift lever seal

• | Manual transaxle internal shift mechanism malfunction

• | Tighten or replace mounts.

• | Inspect cables and replace if necessary.

• | Inspect shift fork and replace if necessary.

• | Inspect shift fork and replace if necessary.

• | Clean clutch housing and engine.

• | Inspect seal and replace if necessary.

• | Disassemble transaxle, repair as necessary.

Slips Out of Gear While Accelerating |

• | Missing or misadjusted first gear thrust bearing or washer

• | Worn or damaged fist gear spline lock on 1st/2nd synchronizer

• | Worn of damaged second gear spline lock on 1st/2nd synchronizer

• | Worn or damaged third gear spline lock on 3rd/4th synchronizer

• | Worn or damaged fourth gear spline lock on 3rd/4th synchronizer

• | Worn or damaged 5th gear spline lock on the 5th/Reverse synchronizer

• | Worn or damaged Reverse gear spline lock on the 5th/Reverse synchronizer

• | Worn or damaged 1st, 2nd, 3rd, 4th, 5th or reverse gear spline lock

• | Manual transaxle internal shift mechanism malfunction

• | Inspect bearing and washer and replace if necessary.

• | Inspect spline lock and replace if necessary.

• | Inspect spline lock and replace if necessary.

• | Inspect spline lock and replace if necessary.

• | Inspect spline lock and replace if necessary.

• | Inspect spline lock and replace if necessary.

• | Inspect spline lock and replace if necessary.

• | Inspect spline lock and replace if necessary.

• | Disassemble transaxle, repair as necessary.

Slips Out of Gear While Coasting |

• | Damaged, worn, or missing shift rails

• | Manual transaxle internal shift mechanism malfunction

• | Inspect shift rails and replace if necessary.

• | Disassemble transaxle, repair as necessary.

Fluid Leakage |

• | Fluid level high

• | Damaged axle shaft seals

• | Vent cap plugged

• | Poor sealing on shift cover

• | Poor sealing between case and clutch housing

• | Poor sealing on rear cover

• | Poor sealing or loose back-up lamp switch

• | Poor sealing or loose vehicle speed sensor

• | Drain excess fluid.

• | Inspect axle shaft seals and replace if necessary.

• | Clear or replace vent cap.

• | Replace sealer on shift cover.

• | Replace sealer between case and clutch housing and tighten.

• | Replace sealant on rear cover and tighten.

• | Tighten switch or replace sealant as needed.

• | Tighten sensor or replace sealant as needed.