1998 Pontiac Transport Ignition Turned On Relay Fuel Pump Relays Engage Tried

1998 PONTIAC TRANSPORT
157,000 MILES
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ROBERT978
  • MEMBER
  • 1 POST
when ignition is turned on my ignition relay and fuel pump relays DO NOT engage. I tried replacing them and that didn't work. I can't find any obvious shorts, and there is power to the relays but the points don't connect when the key is turned on like they should. Where do I look next?
Feb 1, 2013 at 5:04 PM
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JDL
  • ✓ASE Certified Mechanic
  • 16,098 POSTS
  • ASE Certified Mechanic
In the diagram, check the fuse, and check voltage at the fuse circuit. Voltage to the coil side of fuel pump relay comes from the pcm, dark green wire. In the diagram, when the relay is activated, the gray wire carries voltage to fuel pump.

Any applicable trouble codes? To check codes yourself, at the least, you need an obd2 code reader. Your local autostore should have one. Some of the national brand autostores will make house calls. Maybe they can come to your house to check codes. I don't know what they charge?
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Feb 1, 2013 at 6:20 PM
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