W350 1 Ton Pickup 4WD V8-360 5.9L VIN 1 4-bbl (1988)
Fuel Supply Line: All Technical Service Bulletins
Engine - No Start/Surge or Hesitation
Models
1988-89 B/AB, D/AD, N/AN Bodies
Subject
Insufficient Fuel Volume Due To A Ruptured Fuel Pump Supply Hose
Index
FUEL
Date
October 30, 1989
No.
14-02-89
(C14-08-9)
P-3932
BODY CODE LEGEND
B/AB - DODGE RAM VAN/WAGON (RWD) D/AD - DODGE RAM PICKUP/RAMCHARGER SPORT UTILITY (RWD, 4WD) N/AN - DODGE
DAKOTA/DAKOTA SPORT (RWD, 4WD)
SYMPTOM/CONDITION
No start, surge or hesitation due to insufficient fuel supply to the throttle body. This condition may be caused by a ruptured fuel supply hose at the
in-tank fuel pump module.
DIAGNOSIS
Before performing the diagnosis for the above SYMPTOM/ CONDITION, perform the Fuel System Pressure Release Procedure as called out in the
"Fuel System" section of the appropriate 1988 or 1989 service manual.
The following procedure will help in diagnosing a ruptured fuel pump supply hose.
1.
Disconnect the fuel supply hose from the throttle body.
2.
Connect fuel system pressure tester, Miller Tool C-4799-A, to the fuel supply hose.
3.
Connect DRB II diagnostic tester to the vehicle connector. Turn the ignition key to the "Run" position. Cycle the DRB II to the Actuate Outputs
Test for "Auto Shutdown Relay." This will activate the fuel pump and pressurize the system.
4.
The pressure gauge should stabilize at 100 Kpa +/- 7 Kpa (14.5 psi +/- 1 psi).
5.
Clamp the fuel return hose shut at the throttle body. The fuel pressure will increase and stabilize at approximately 345 Kpa (50 psi).
6.
Turn the ignition to the "OFF" position.
7.
If the fuel pressure drops slightly (less than 5 psi) and then stabilizes, the system is operating correctly.
8.
If the fuel pressure drops rapidly (to below 10 psi in one minute or less) a leak is present in the fuel supply system.
9.
If no leaks are visible between the fuel tank and the throttle body, the problem is most likely a ruptured fuel supply hose at the fuel pump module.
10.
Remove the fuel return hose clamp and the fuel pressure tester.
PARTS REQUIRED
1
Fuel Supply Hose (B/AB)
P/N 52006220
