1989 Ford Bronco Fuel Pump

Tiny
BAMF69
  • MEMBER
  • 1989 FORD BRONCO
  • 6 CYL
  • 4WD
  • MANUAL
  • 164,000 MILES
Hi there I was in a fender bender on wednesday, but everything seemed to work fine. Sunday I went to the store, and when I came out it wouldn't start.I think it's the fuel pump but when I go to start the car it still pressurizes the system is this what's wrong?
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Sunday, May 3rd, 2009 AT 4:45 PM

10 Replies

Tiny
RASMATAZ
  • MEMBER
Sunday I went to the store, and when I came out it wouldn't start. You need to identify if its fuel or spark problem -do below

Get a starting fluid/ether/better off gas in a spray bottle and spray into the carb or the throttle body on an EFI. Did it start and die? If not disconnect a sparkplug wire or 2 and ground it to the engine -have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, distributor pick-up coil, ignition control module, ECM, Ignitor cam and crank sensors- Note: If it doesn't apply disregard it
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Sunday, May 3rd, 2009 AT 4:58 PM
Tiny
BAMF69
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Hi there, i'm pretty sure it's not the sparkplugs how would I test the fuel pressure? And how would you know if it's the pump/filter/or the pressure regulator?
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Sunday, May 3rd, 2009 AT 5:47 PM
Tiny
RASMATAZ
  • MEMBER
What is it -is it Carb or TBI /MPFI

To check the fuel pressure Tee-in on the fuel filter or hook it up on the fuel rail test port
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Sunday, May 3rd, 2009 AT 5:52 PM
Tiny
BAMF69
  • MEMBER
My bronco 2 is fuel injected, so it doesn't have a carb. By getting in a fender bender could it have flipped the inertia switch?
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Sunday, May 3rd, 2009 AT 5:53 PM
Tiny
RASMATAZ
  • MEMBER
Could be if it refuses to start after the fender bender when ist tripped

Its behind left side of dash above brake pedal
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Sunday, May 3rd, 2009 AT 6:41 PM
Tiny
BAMF69
  • MEMBER
Ok so I tried the inertia switch, I unplugged the electrical component and tried to crank the engine then plugged in the electrical component back in and still nothing.I really tend to think it's the fuel pump but i'm still not sure. Any Ideas
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Sunday, May 3rd, 2009 AT 7:35 PM
Tiny
RASMATAZ
  • MEMBER
Check for power at the inertia switch, if you got power -Power the fuel pump from the battery if it comes On -replace the inertia switch. No power at the inertia switch check fuel pump relay and fuel pump fuse.
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Sunday, May 3rd, 2009 AT 10:35 PM
Tiny
BAMF69
  • MEMBER
How do I check to see if theres power at the intertia switch.I checked all fuses they are good
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Monday, May 4th, 2009 AT 3:57 PM
Tiny
RASMATAZ
  • MEMBER
Use a voltmeter and check for power on the brown wire and also get some help this one can be a tough problem to find
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Monday, May 4th, 2009 AT 4:33 PM
Tiny
BAMF69
  • MEMBER
Alright, i've been playing the scenario in my head all day then it finally hit me, but when I try to crank the engine I don't even get to the part where my spark plugs give off a spark. What can get loose and cause my engine to not give off a spark at all. Like when I try to crank it it doesn't do anything but a clickin noise from my pump.
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Monday, May 4th, 2009 AT 4:36 PM

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