Question about 1994 Dodge Grand Caravan
Replaced fuel pump, no fuel in filter or fuel rail relays good, old pump good
fires up with starting fluid, then dies immediately
Dear Ron, you have replaced fuel pump and fuel filter. You have checked the fuel pump relay. Still no fuel in rail. Try bypassing fuel relay with jumper from batt to fuel pump. If o/k then check computer for ground to relay. This system uses a relay that is operated by the computer that supplies a ground for the relay to operate. The wire color is green,16 gage. If the ground is not available then "no fuel" Check this with a test light. Key on and crank apply test light to ground wire and other end of light to ground. You should hear relay click and get fuel. If this checks out you will need to replace computer or get creative with rewiring the relay so it works without computer input. Good luck Moe
Posted on Apr 24, 2009
1. is there gas in the tank?
2.is the pump getting power? SEE #4
3.why did you replace the pump? 4.some dodges need a scan tool to run the fuel pump to get the fuel system primed after replacing the pump. If the computer senses the engine isnt running after a few seconds it shuts the fuel system down. Happened on my friends jeep that was a chrysler system. Took a while to figure it out. The snap on red brick scan tool worked for this. Any scan tool(not just a code reader) that can get to functional tests of the engine computer will work.
Sounds like no fuel is getting past the pump,so get a scan tool capable of doing this,take hose off of fuel filter stick the end of the hose in something to catch the fuel that will come out and activate the pump. If fuel comes out the pump is working and the filter is clogged, if pump sounds like it is runnin and no fuel comming out pump is bad.If all is quiet pump isnt getting power.
Posted on Apr 24, 2009
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Posted on Jan 02, 2017
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