Question about 1987 Ford Bronco

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Wondering why my Ford bronco back fires and won't idle right

Get got my 1987 Ford bronco 4x4 full size fuel injection timed to where it start but won't idle with out stepping on the gas and it back fires when raving high?

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  • 72 Answers

Is it a 5.0?
Could be a restricted catalytic converter.
Could be a bad vacuum leak
How did you time it?
Distributor pickup coils are fairly common on these older trucks.
What other symptoms are there?

Posted on Apr 16, 2015

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1 Answer

Truck starts and idles won't gain rpms when throttle pressed then dies out


the engine has jumped timing or you have a air leak in the manifold to carb if its fuel injected check for how much fuel pressure your getting also replace spark plugs and wires cap rotor

Apr 02, 2013 | 1990 Ford Bronco

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I bought a 89 ford bronco it will back fire through the fuel injection when you give it gas but not all the time


sounds like it is running lean. Check engine light on?

You mean backfiring through the intake manifold right?

A tip in hesitation or backfire is usually a lean condition. If you have a MAF sensor, clean the inside exposed wires with carb cleaner. Do no touch.

Mar 06, 2011 | 1989 Ford Bronco

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Hello I have a 1980 Ford Bronco 351 2bbl. Wondering if anyone knows which screws adjust what? Please if anyone has any ideas please respond. Thank you.


Here are some images that might help to assist you, and let me know if you require any further assistance.


Adjust the curb idle with the engine warmed up and the choke off.

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The air/fuel mixture screws should be adjusted with the engine warmed up and at normal idle speed, then turn each air/fuel mixture screw in one at a time until the engine just begins to mis-fire, then back the air/fuel mixture screw out 1-1/2 to 2 turns out a half a turn at a time until the engine idle is the smoothest. (your vehicle might have restrictor caps over the air/fuel mixture screws to limit the amount of adjustment)

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The choke adjustments;

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To adjust the vacuum tension pull on the choke pull-off:

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Adjust the fast idle screw to the proper RPM with the engine cold and the choke on.

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Jul 31, 2010 | 1981 Ford Bronco

1 Answer

1988 ford bronco 4x4 fuil injection is the firing order the same as carb engin eng.302


1988 Ford Bronco Full Size 5.8 liter V-8 VIN "H"

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Hope helps.

Jul 21, 2010 | 1988 Ford Bronco

1 Answer

1987 FORD FULL SIZE BRONCO FUEL PROBLEM, SHUTS DOWN


The only way air can get in the fuel line is if you have a hole in it! Problem of course is were? I would run the fuel line from back to front and back again. Look for any wet spot that you can find. You may even have to drop the tank to ba able to look on top. I would suspect the problem is in the line before the high preasure pump, being as you are pulling air into the system. I have seen leaky lines allow air in, but not let fuel out.

Sep 12, 2009 | 1987 Ford Bronco

1 Answer

1989 Bronco starts but dies after a couple of seconds


try checking the thermostat control senser. it caused my bronco to start for a second and then die. after a while it would finally start and run for a while then die driving down the road. i changed the thermostat control senser and it fixed all problems of dieing

Apr 27, 2009 | 1989 Ford Bronco II

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Firing order for 1989 full size ford bronco 302


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Apr 22, 2009 | 1989 Ford Bronco

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I have a 1988 ford bronco full size xlt it is ideling low when u


I just had the same issue with my 88 xlt w/351 W it wound up being the MAP sensor and the timing. I would check both of these and see if it solves your issue.

Feb 17, 2009 | 1988 Ford Bronco II

1 Answer

Fuel pump switch


also known as the inertia switch is located on the left kick panel area by the emergency brake pedal . 90 full size bronko .

J5

Jan 16, 2009 | 1990 Ford Bronco

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