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Plymouth Voyager Crank, No Start Hot

Q. Vince, I have a:

  • 1990 Plymouth Voyager
  • 3.0 Liter Engine
  • Fuel Injected
  • 196,000 mile
  • Automatic transmission
  • A/C, P/S, P/B
Jeep Cherokee A/C Troubleshooting

The problem is when I run the van for at least 30 minutes of driving, both city and highway, I have the following problem. When I go to restart the engine, after a short, approximately 15 minute, shut down. The engine will not restart. After an hour cool down, starts and runs great. Engine cranks great! I have noted that there is no fuel flow from the fuel tank. Any clues?

Thanks,
Bob

A. The problem is probably a bad ASD relay. Here is how to test it.

ASD RELAY TERMINAL IDENTIFICATION
The following is a list of the terminal numbers, with circuit codes, and color codes, and their function:

Circuit No. Terminal No. Color Code Description
J1/J11 30 Red Has battery input voltage supplied through fusible link.
Z1 87 Green/blk. Connected to J1 circuit (terminal 30) in the energized position, supplies output voltage to fuel pump, O2 sensor, fuel injectors, and coil.
J2 86 Blue/wht. Connected to the electromagnet, (diode) and the Single Board Engine Controller (SBEC). The SBEC provides input voltage to relay.
K19 85 Blue/yel. Connected to the electromagnet (diode) and grounded by the SBEC when distributor signal is present.
N/A 87A N/A Not used in these applications.

Plymouth Voyager Crank, No Start Hot

ASD RELAY TEST

  1. Connect a voltmeter to the J1 (terminal 30) wire at the ASD connector. Check for battery voltage. If no voltage is present, check fusible links and supply voltage from the battery. If voltage is present proceed to step 2.
  2. Connect the voltmeter to the Z1 (terminal 87) wire at the ASD connector. Turn the ignition key to the START position and crank the engine. If output voltage is present during cranking, the ASD relay is functioning normally and no further testing of the ASD relay is necessary. If no voltage is present at the Z1 wire, proceed to step 3.
  3. Connect the voltmeter to the J2 (terminal 86) wire at the ASD connector. Turn the ignition key to the RUN position. Input voltage from the SBEC to the ASD relay should be present. If voltage is present proceed to step 4. If no voltage is present, disconnect the 60 way and 14 way SBEC connectors, and the ASD relay connector. Connect an ohmmeter between the J2 (terminal 86) wire and the blue/white wire at pin connector no.12 of the SBEC, and check for continuity. If no continuity exists, repair open in wire, reconnect SBEC and ASD relay, and test operation.
  4. Connect voltmeter to K19 (terminal 85) wire at ASD connector. Turn ignition key to START position, and crank engine, while observing voltage at K19. Voltage should be present at K19 and drop to less than 1 volt within 2 seconds during cranking. If voltage drops ASD relay is functioning, and no further testing of the ASD relay is necessary. If voltage does not drop, proceed to step 5. If no voltage is present, disconnect the ASD relay, and connect an ohmmeter between the J2 (terminal 86) and K19 (terminal 85) of the ASD relay and check for continuity. If no continuity exists replace and ASD relay and test operation.
  5. Disconnect the 60 way SBEC connector and ASD relay. Connect an ohmmeter between the K19 wire at the ASD relay connector and the Blue/Yellow wire at pin connector no. 58 of the SBEC. Check for continuity. If no continuity exists repair open in wire, reconnect SBEC and ASD relay, and test operation.

Plymouth Voyager Crank, No Start Hot

Or you could try swapping it with another relay of the same type.

Additional Information provided courtesy of ALLDATA

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