Author Topic: No power to fuel pump  (Read 6278 times)

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79coyotefrg

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Re: No power to fuel pump
« on: Sep 21, 2017, 10:56:46 PM »
Afternoon Report,

I replaced the Open circuit relay with one that I know works and no luck, so cool my relay is good.

I used a jumper wire and jumped between Fp and STA on the terminals that connect to my open circuit relay.  Tadaaaa!!! Fuel pump gushing fuel out the open line....

So what the F over... Relay is good but when I bypass it the pump turns on.  There must be another system in the circuit, not allowing the power to go to the pump. 

Next I moved onto the start injector time switch, I measured the resistance as described by my Repair Manual and found 80ohms where it should be 30ohms +-10.  So I guess I have a bad start injector time switch, but what the hell does that do anyway. Would it not cause my fuel pump to turn on???

This is fun its like having a conversation with myself out loud


I once drove my daughters 4runner a ll the way home with the Fp and B terminals jumped with a paper clip in the diagnostic port.  Sadly I can't remember much about how I fixed it. 
AR-TTORA founder 22R bored.060,LCE stage II race cam http://pure-gas.org/    32/36weber, :driving: Marlin 1200 NON ceramic clutch, L52SHD+dualcase #2919, cable-locker, Yukon 5.29 gears, 35's, Allpro ebrake, front springs, and high steer, F150rears    RIP Nitro 9-29-07 :(  I sure miss him :down: MarlinCrawlerInc IS NOT affiliated with TrailGear in any way

 
 
 
 
 

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