A/T - E4OD Turbocharger/Supercharger Incompatible

9209ford02

Article No.
92-1A-8

01/26/92


TRANSMISSION - E40D AUTOMATIC TURBOCHARGER/SUPERCHARGER INSTALLATION


LIGHT TRUCK: 1989 and after ECONOLINE, F SUPER DUTY, F-150-350 SERIES


ISSUE: Qualified Vehicle Modifier (QVM) Bulletin Number 11 contained a letter originally sent to all Ford Dealers (4/24/90), addressing an incompatibility between the E40D and an Add-On Turbocharger/ Supercharger. The bulletin and the letter are printed here as an added aid to the service technician.

ACTION: Refer to the following information for Ford warranty policy in the event of unusual and premature part failures.


TURBOCHARGER/SUPERCHARGER INSTALLED ON VEHICLES EOUIPPED WITH E40D TRANSMISSION

The attached letter was sent to all Ford Dealers, 4/24/90, indicating an incompatibility between the electronically controlled automatic transmission (E40D) and an Add-On Turbocharger/Supercharger.

The purpose of this bulletin is to make intermediate and final stage manufacturers aware of the Ford Parts and Services (FPSD) dealer letter and warranty policy, in the event of unusual and premature failures.

OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS: INFORMATION ONLY
OASIS CODES: 503300, 504000


April 24, 1990

To: All Ford Dealers

Subject: Incompatibility of Add-On Turbocharger/Supercharger to E & F Series Trucks Equipped with Electronically Controlled (E40D) Automatic Transmissions

The addition of a turbocharger/supercharger to E & F Series trucks equipped with the electronically controlled automatic transmission (E40D) is not compatible and will result in customer dissatisfaction. The shift scheduling of the E40D transmission is not calibrated for use with a turbocharger/supercharger package. Customers will experience shift performance concerns as well as damage to internal transmission components.

Due to the incompatibility of an added turbocharger/supercharger and the electronically controlled automatic transmission (E40D), we strongly recommend that you not sell or install a turbocharger/supercharger package on the subject units. Our position is based on engineering tests and actual experience. The intent of our position is to help maintain customer satisfaction with our product.

This letter does not in any way suggest or imply that use of an add-on turbocharger/supercharger is acceptable or condoned for use on any Ford light trucks. Use of such products is likely to cause excessive stress, load, and temperature levels on all powertrain components. Prior to performing a warranty repair to a vehicle with an add-on turbocharger or supercharger, you should be sure that the need for repair is caused by a true defect in a Ford part and not the result of a modification-generated condition. Excessive component stress, load, or temperature created by turbocharging/supercharging can cause unusual and premature part failures that, if they should occur, are not covered under the Ford warranty.