Question about 1986 Ford Bronco

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1987 big bronco 5.0 302 want stay started until it warms up

Changed spark plugs an wires whats wrongs thanks

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  • yadayada
    yadayada May 11, 2010

    please redo, the question eludes me.



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Check the distributer and timing and make sure you don't have a plugged fuel filter

Posted on Jan 31, 2009


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1 Answer

My 1987 Ford Bronco II won't start

First you always test things & never replace anything

When you understand how things work & how to test
them,then they have to fail a test in order to need replacing

I would think Fuel Pump--if it quite while driving
Put a gauge on the motor if you have a shrader
valve to do so

Seldom do you need to replace a dist
The parts inside can be diagnosed & replaced
if you can source them

Things like plugs,wires & such you leave until you
know if you have fuel pressure,spark & so on.

Once a vehicle gets to 20 years of age you start
checking for wire corrosion such as around fusible links

Never forget the battery & it's cables & the internal
corrosion possible there

Worn ignition switch a possible

You say won't start,so I assume the engine
does turn over?

Oct 01, 2012 | 1987 Ford Bronco II

1 Answer

1987 Bronco II 2.9 Engine. Had it for 10 years with the same problem the whole time. Runs fine while the weather is warm and dry. Once the humidity or temp changes, or the rain starts, it loses power, bogs...

Have you changed the distributor cap? A crack in the cap will cause moisture to gather and cause spark issues. Give the cap a very thorough inspection and also your wires. You may have poorly insulated boots on the wires and the spark will ground out. I had this issue and I looked at the engine at night in the pitch black. I found a plug wire arcing to the distributor base because of a bad plug wire. The truck lost power when the weather was moist. I hope this helps.

Apr 14, 2011 | 1987 Ford Ranger

1 Answer

I have a 1987 ford bronco and it wont start. It turns over like it wants to start but wont. I thought it might have been the carburator but my friend checked and its not, so now I think its flooded. what...

Check to see if the spark plugs are getting voltage. Check your distributor and rotor and make sure the distributor cap is not cracked, and the rotor is making contact. You can use an inductive timing light or use a spark plug connected to one of the plug wires to and ground the base of the plug using a jumper cable (do not touch the plug when cranking). When cranking you should see a spark. If you do not it could be the coil or electronic ignition. If you see sparks then you need to check the fuel pump pressure.

Nov 16, 2010 | 1987 Ford Bronco

1 Answer

I have a 1986 Bronco II with 4 wheel drive and automatic trans. 185,000 miles when it warms up it will stutter and lose power when you try to accelerate. I am able to baby it up slowly to a faster speed...

Try checking the spark plugs gap and ignition wires and cap and rotor sounds like a spark delivery problem to big of an air gap at cap/rotor or plugs what size engine? Carburetor or fuel injected? It makes a big difference

Dec 29, 2017 | 1986 Ford Bronco II

1 Answer

My 96 bronco 5.8 stumbles on acceleration.

Did it spark well on all the plugs? Usually if you have no change in idle with two wires removed it needs a new set of spark plug wires. If it was cylinder 2 & 3 (side by side) then you should suspect a head gasket. Does the Bronco have multiple coils or a coil pack with multiple inputs? Are these two plugs hooked up to one coil?

Feb 11, 2010 | 1996 Ford Bronco

1 Answer

1987 ford bronco 2 turns over wont ignite loose distributor

If your distributor is lose than you need to check the timing. Pull a plug out and put the plug wire back on it. ground the side of the plug and see if you get any spark. It should be a bright blue. If there is spark than put the plug back in. But I would first check the timing.

Mar 06, 2009 | 1987 Ford Bronco II

1 Answer

Spark plug and cap wiring for 1985 ford bronco 2

When your facing the front of your bronco looking into engine compartment, on left hand side in sequence is 1, 2, 3 front to back. on right hand side it's 4,5,6, front to back. The distributor rotates clockwise. On the top of the distributor, is 1-4-2-5-3-6 starting at the little mark on the cap or TDC. Hope that helped.

Jan 04, 2009 | 1987 Ford Bronco II

2 Answers

1990 Ford Bronco Stalling

try cleaning your throttle plate and iac valve

Nov 20, 2008 | 1987 Ford Bronco

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