Engine Stalling On Engagement OR While Stopping

 

Engine Stalling

Engine Stalls While Stop

Ford/Mercury's Engine Stalling On Engagement/Stopping

Problem Mostly Noticed on  2005-’08 Ford Escape and Mercury Mariner ­vehicles equipped with a CD4E automatic transaxle and built from Aug. 1, 2004 through Feb. 15, 2007, may exhibit an engine stall when coming to a stop or when engaging the transmission into drive or ­reverse. 

This condition may be intermittent and often occurs after extended drives. There may be no diagnostic trouble codes stored. This may be caused by internal wear in the torque converter, which prevents it from unlocking.

How To Repair And Solve This Problem:

1. Inspect and repair all non-transaxle codes.

2. Monitor the PIDs (parameter identification) for TC_SLIPACT as the stall is occurring.

a. If the slip is greater than 20 rpm, the stalling is not transaxle related. Repair following PC/ED procedures for engine stalling condition.

b. If TC_SLIPACT is less than 20 rpm with the transmission in park or neutral, torque converter internal failure is the most likely cause, proceed to step 3.

3. Remove the transaxle assembly and check the rotation of the torque converter in the bell housing. A failed converter will be difficult to rotate.

4. Remove the torque converter, drain the automatic transmission fluid (ATF) and refill the CD4E transmission assembly using MERCON V ATF.

5. Install a new torque converter and reinstall the transaxle assembly.

6. Back-flush the transmission cooler system.

THIS SAME TYPE OF PROBLEM WAS ALSO NOTICED ON MAZDA'S

My 2005 Mazda Tribute is having a stalling problem. It is not consistent, but about every two or three days when I stop at a stop sign or traffic light the engine will die.

The idle air control valve needs to be replaced. Cleaning it will not fix this problem.

TSB: 05-003/11

2005-2006 AND 2008 TRIBUTE - ENGINE STALLS ON ENGAGEMENT / STOPPING

BULLETIN NOTE

This bulletin supersedes the previous bulletin 05-004/07, issued on 04/27/2007. The REPAIR PROCEDURE, PART(S) and WARRANTY INFORMATION have been revised.

Changes are noted below in Red

APPLICABLE MODEL(S)/VINS

2005-2006 and 2008 Tribute vehicles equipped with Automatic Transaxle (ATX) built from Aug. 1, 2004 to Feb. 15, 2007

DESCRIPTION

Some vehicles may exhibit an engine stall when coming to a stop or when engaging the ATX into drive or reverse. This condition may be intermittent, and often occurs after extended drives. There may be no diagnostic trouble codes (DTCs) stored. This concern may be caused by internal wear of the torque converter, which prevents it from unlocking. A modified torque converter is available.

Customers having this concern should have their vehicle repaired using the following repair procedure.

REPAIR PROCEDURE

1. Verify customer concern.

2. Check automatic transmission fluid (ATF) level and add if necessary.

3. Inspect and repair all non-transaxle codes according to Workshop Manual.

4. Use M-MDS to monitor PID (Parameter Identification) for TC_SLIPACT as the stall is occurring.

If slip is greater than 20 RPM, stalling is not transaxle related. Repair according to Workshop Manual procedure for engine stalling.

If slip is less than a 20 RPM, with the transmission in park or neutral, torque converter clutch (TCC) internal failure is the most likely cause. Proceed to Step 5.

5. Raise vehicle safely on hoist.

6. Drain automatic transmission fluid (ATF) from transaxle assembly.

7. Remove automatic transaxle assembly according to Workshop Manual (section 05-13 TRANSAXLE - 3.0L (4V) REMOVAL or TRANSAXLE - 2.3L REMOVAL).

NOTE: Check the rotation of the torque converter in the bell housing. A failed torque converter will be difficult to rotate.

8. Remove torque converter from bell housing.

9. Install new torque converter and reinstall automatic transaxle assembly according to Workshop Manual (section 05-13 TRANSAXLE - 3.0L (4V) INSTALLATION or TRANSAXLE - 2.3L INSTALLATION).

10. Refill automatic transaxle assembly with MERCON® V ATF.

11. Back-flush transaxle cooler system according to TSB 05-012/10.

12. Inspect for proper ATF level.

13. Verify repair.