Symptom Chart - Transmission Operation

WARNING: This page is about a different variant/trim than selected.

Symptom	Possible Sources	Action
Gears clash when shifting from one forward gear to another	Gear teeth/synchronizer damaged	INSPECT and REPAIR as necessary. Refer to: Transmission .
Transmission jumps out of gear	Bolts retaining transmission to engine loose Preload incorrect Internal components damaged Gear teeth worn/damaged	TIGHTEN the bolts to specification. Refer to: Transmission - 1.0L EcoBoost (90kW/120PS) . CHECK preload. INSPECT the synchronizer for free movement on their hubs. INSPECT the synchronizer blocking rings for widened index slots, rounded clutch teeth and smooth internal surface. CHECK the countershaft cluster gear for excessive end play. INSPECT the shift forks for wear. CHECK for loose shift forks on the shift rails. INSPECT the synchronizer sliding sleeve and the gear clutch teeth for wear and damage. REPAIR as necessary. Refer to: Transmission . INSPECT and REPAIR as necessary. REFER to Transmission ..
Transmission will not shift into one gear - all others OK	Internal components	For the gear in question, INSPECT the shift rail and fork, the synchronizer, and the gear clutch teeth for restricted travel. REPAIR as necessary. Refer to: Transmission .
Transmission is locked in one gear and will not shift out of that gear	Internal components	INSPECT the gears, the shift rails, the forks and the synchronizer for wear or damage. REPAIR as necessary. Refer to: Transmission .
Fluid leaks	Transmission fluid Other components leaking Halfshaft seals Input shaft seal Fill and drain plugs	CHECK the transmission fluid level and type. REMOVE all traces of fluid on exposed transmission surfaces. CHECK the vent for free breathing. OPERATE the transmission and INSPECT for new leakage. IDENTIFY the leaking fluid as engine, power steering or transmission fluid. REPAIR as necessary. INSPECT and INSTALL new seals as necessary. Refer to: Halfshaft Seal LH . Refer to: Halfshaft Seal RH . INSPECT, and REPAIR as necessary. Refer to: Input Shaft Seal . INSPECT the plug, O-ring, and the threads in the case. REPAIR as necessary. TIGHTEN the plug to specification. Refer to: Transmission Fluid Level Check .
Significant effort required when downshifting	Gear synchronization is inadequate. Gear teeth/synchronizer damaged	INSPECT the transmission. INSTALL a new synchronizer assembly with synchronizer rings. INSTALL two new gears belonging to the synchronizer assembly. Refer to: Transmission .
Stiff gearshift	Transmission fluid Damaged synchronizer rings or inner selector mechanism	CHECK that the transmission is filled with the specified transmission fluid and, if necessary, FILL and ADD transmission fluid as necessary. CHECK the internal components for wear or damage, REPAIR as necessary. Refer to: Transmission .
One of the gears cannot be selected	Fault between the gearshift lever and gearshift lever housing	INSPECT the gearshift lever. Refer to: External Controls .
Reverse gear cannot be selected	Gearshift lever Internal components	CHECK the gearshift lever for damage. REPAIR as necessary, remove the gearshift lever to see whether reverse gear can be selected. CHECK the reverse idler gear and the appropriate selector fork, shift rail and synchronizer unit. REPAIR as necessary. Refer to: Transmission .
Grinding or clashing noises when shifting into 3rd gear	Deflected lubrication condition causing early 3rd gear wear	INSTALL a new 3rd gear, 3rd/4th gear shift fork, outer synchronizer ring, inner synchronizer ring, 3rd gear synchronizer cone, 3rd/4th gear synchronizer assembly. Refer to: Transmission .