Town & Country Van AWD V6-230 3.8L VIN L SMFI (1998)
Cruise Control Vacuum Reservoir: Customer Interest
Speed Control - Does Not Maintain Speed on Grades
NUMBER: 08-27-99
GROUP: Electrical
EFFECTIVE DATE: Aug. 27, 1999
SUBJECT:
Speed Control Does Not Maintain Set Speed While Climbing a Grade
OVERVIEW:
This bulletin involves replacing the battery tray/vacuum reservoir assembly because of speed control vacuum loss while on up hill grade.
MODELS:
1996 - 2000 (NS) Town & Country/Caravan/Voyager
1996 - 2000 (GS) Chrysler Voyager (International Market)
NOTE:
THIS BULLETIN APPLIES TO VEHICLES BUILT PRIOR TO SEPT. 1, 1999 AND EQUIPPED WITH SPEED CONTROL, SALES CODE
NHM) AND A GASOLINE ENGINE.
SYMPTOM/CONDITION:
Vehicle loses more than 5 mph (8 kph) while climbing a grade with the speed control engaged because of a leaking check valve in the battery
tray/vacuum reservoir assembly. The check valve traps vacuum in the reservoir to allow the speed control to work under low manifold vacuum
conditions. The valve may become contaminated and cause it not to seal intermittently. This can cause a loss of vacuum to the servo while driving on a
long up hill grade.
DIAGNOSIS:
Verify the ignition switch and all accessories are turned off. Disconnect the negative and positive battery cables. Remove the battery hold down (Figure
1). Remove the battery from the vehicle. Disconnect the vacuum line at the vacuum reservoir on the battery tray that goes to the speed control servo.
Connect a hand held vacuum pump to the small/top nipple on the vacuum reservoir and apply 20 in. of vacuum. If the vacuum leaks down more than 2
in. in five minutes perform the Repair Procedure, if not look for other sources of vacuum leaks. If no other source of vacuum leak is found, perform the
Repair Procedure.
PARTS REQUIRED:
1
04716740AB
Tray, Battery/Vacuum Reservoir
EQUIPMENT REQUIRED: