Bronco won’t start

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DumbMechanic
Posts: 3
Joined: Fri Dec 07, 2018 11:40 am
Location: Whitwell,TN

Bronco won’t start

Post by DumbMechanic » Fri Dec 07, 2018 11:48 am

Desperate need of help. I have a 88 model Bronco ii. I hit a rut on a trail a little faster than I should have and it cut off on me. It will not start back up at all and I’m clueless. I changed both fuel pumps, the fuel regulator, the icm, the fuel relay, and the green relay. It has good pressure and it has fire to the plugs. I’m lost and don’t want to spend a arm and a leg for someone else to fix it!!!!

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tekatlarge
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Joined: Tue Jan 17, 2006 8:54 am
Location: Kent, Worshington

Re: Bronco won’t start

Post by tekatlarge » Sun Dec 09, 2018 11:18 am

Did you check the inertia switch on the firewall inside the cabin. Just push the button on the little module. :cool:
The Tek @ Large
Kent,Worshington
I was borne under a rock. So what's your excuse?

DumbMechanic
Posts: 3
Joined: Fri Dec 07, 2018 11:40 am
Location: Whitwell,TN

Re: Bronco won’t start

Post by DumbMechanic » Sun Dec 09, 2018 8:45 pm

tekatlarge wrote:Did you check the inertia switch on the firewall inside the cabin. Just push the button on the little module. :cool:
I’m pretty sure it’s still good. I bypassed it and it still won’t start. Both pumps are turning on.

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tekatlarge
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Location: Kent, Worshington

Re: Bronco won’t start

Post by tekatlarge » Tue Dec 11, 2018 5:33 pm

Check Your Fuel pressure. get a Gage and actually measure what the fuel pressure is when the key is switched on. it takes a minimum of about 30 psi to even squirt through the injector. I think the recommended is 40 psi It has been a long time.

I mention this cause I have seen so many people test their pump by pushing on the schrader valve and if it squirts they say it's good. You actually have to measure.

I think I heard you say it has spark. Make sure and check it at the plug.

Try that and we keep on from there. :cool:
The Tek @ Large
Kent,Worshington
I was borne under a rock. So what's your excuse?

DumbMechanic
Posts: 3
Joined: Fri Dec 07, 2018 11:40 am
Location: Whitwell,TN

Re: Bronco won’t start

Post by DumbMechanic » Tue Jan 01, 2019 8:29 pm

Checked the injectors with a test light and they’re not getting any power. All of the fuses are good. I don’t know if the wiring harness has came unplugged or what

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