turns over but wont start 87 ford bronco 2 2.9

1987 FORD BRONCO
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HATCHIE
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  • 2 POSTS
my father hooked his battery up wrong.now his bronco will turnover but not start.we replaced fuel relay switch and chaecked his in tank fuel pump which is working when wired up direct .so we know it isnt the fuel pump.does anyone have any other ideas?
Jan 11, 2006 at 2:45 PM

What to check next

Diagnostic guidance. Suggested checks and possible repairs are separate from the owner's reported results.

Have the vehicle's protected power feeds, grounds and fuel-control circuit tested against the correct wiring diagram. Do not leave the pump on a bypass power supply.

Guidance references and applicability

Source: Original question and visible replies. Owner outcomes are attributed; other participants' experiences are not treated as this owner's repair. Next steps are editorial guidance, not a confirmed diagnosis. Fluke: Voltage-drop diagnosis. General electrical testing; no vehicle-specific diagnosis. https://www.fluke.com/en/learn/blog/automotive/electrical-automotive-troubleshooting

Read the replies · Discussion summary and reported outcome

AI-ASSISTED GUIDANCE · REVIEWED BY 2CARPROS
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MAXTROOPER
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  • 6 POSTS
were was the relay switch. I'm having problems with my bronco. I have no power to the pumps. I got my wife to pick up a new switch but I don't think its the right one.
Jan 12, 2006 at 10:33 AM
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WANZER2
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  • 11 POSTS
The relay is on the passenger side looking from the front 3rd one back
Jan 14, 2006 at 5:09 AM
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DODGE89
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  • 33 POSTS
if its not that i did it once it might have blown out the main fuse.
Jan 14, 2006 at 2:23 PM

Discussion summary

turns over but wont start 87 ford bronco 2 2.9

A 1987 Bronco II 2.9 would crank but not start after the battery was connected incorrectly. Replacing a fuel relay did not restore starting; the pump operated when supplied directly.

Reported outcome: No successful repair was reported.

Direct pump operation does not verify normal control or fuel pressure. The suggested relay location and main-fuse fault were not confirmed for this vehicle.

Read the original discussion

AI-ASSISTED SUMMARY · REVIEWED BY 2CARPROS
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