P1336, P1309, P0340 - Taurus Car Club of America : Ford Taurus Forum
 
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Article No.
02-22-1

11/11/02

^ DRIVEABILITY - SURGE/ROLLING IDLE - GEAR
DRIVEN SYNCHRONIZERS - INCORRECT
INSTALLATION - CAMSHAFT POSITION
SYNCHRONIZER (CMP) INSTALLATION TOOL
CORRECT APPLICATION

^ ENGINE - GEAR DRIVEN SYNCHRONIZERS -
INCORRECT INSTALLATION - CAMSHAFT POSITION
SYNCHRONIZER (CMP) INSTALLATION TOOL
CORRECT APPLICATION

FORD:
1994-1997 THUNDERBIRD
1995-2003 TAURUS
1996-2003 MUSTANG
1995-1997 AEROSTAR
1995-2003 RANGER, WINDSTAR
1996-2000 EXPLORER
1997-2003 E SERIES, F-150

MERCURY:
1994-1997 COUGAR
1995-2003 SABLE
1997-2000 MOUNTAINEER

ISSUE

Incorrectly installed gear driven camshaft position (CMP) sensor synchronizer assemblies may be hard to diagnose. Vehicle may exhibit poor fuel economy, driveability Diagnostic Trouble Codes (DTCs) P1336, P1309, P0340 with MIL light on. Loss of power, surge, hesitation and runs rough on acceleration may also be present.

ACTION

New diagnostics have been developed for WDS to diagnose incorrectly installed gear driven camshaft position (CMP) synchronizer assemblies. Refer to the following Service Procedure to diagnose a possible mis-installed synchronizer assembly and proper installation procedure.

SERVICE INFORMATION

Items Covered In This Article

^ "Hall" vs. "VRS" sensor function

^ Vehicle history scrutiny for past service of the synchronizer assembly

^ WDS - Power balance test

^ WDS - CMP and CKP wave signal comparison

^ Wave Comparison chart - CMP vs. CKP

^ Correct (CMP) synchronizer installation tool application & installation procedure

^ "Top Dead Center" (TDC) alignment

^ Synchronizer installation tool application chart


Hall - Effect (Hall) and Variable Reluctance (VRS) CMP Sensors

CMP sensors are used on all current model year engines, regardless of fuel system or ignition system type. The CMP sensor provides the Powertrain Control Module (PCM) with cam position information to indicate # 1 cylinder, on the compression stroke

There are two different types of CMP sensors:

The three-pin, Hall-effect sensor

The two-pin Variable Reluctance sensor


Although the Hall-effect (three-pin) and the Variable Reluctance (two-pin) CMP sensors perform the same function, their signal appearance is quite different and they are not interchangeable.

“To steal ideas from one person is plagiarism; to steal from many is research”.

Josh


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