20 Most Recent 1991 Ford Bronco Questions & Answers

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My front tires are slanting

First, are they slanting inwards at the top, or towards the front?
If your tires are slanting inwards like you are turning the car (the front is facing in more than the back when they should be facing straight forwards ... like it's pigeon-toed) then you have an alignment problem. For this you will have to go to a mechanic who can do alignments and they will straighten it out.
If the tire is slanting inwards towards the top of the tire, there are a few issues that could be the cause ...
1. Jack up your SUV so one of the front tires leaves the ground. Grab the tire and push on the top and then the bottom of the tire (above and below the rim). If the tire moves when you push on it, the tie rods or tie rod ends are probably shot. This is a piece of the steering system, and tends to be one of those parts that every car eventually has problems with. If you do not work on your own vehicle very often I recommend taking it to a mechanic to have these replaced since the steering system is so vital to your safety while driving. If you DO most of the work on your own car, and have a lot of experience with it, you should be able to pick up tie rod ends at any auto parts store. While you are there, I recommend getting a Haynes manual for your vehicle -- it will have exact directions on how to change out the tie rod ends, with pictures and all that goodness. If you ever have future problems with the car that you want to fix, this manual will almost always help you get it fixed.
2. If your tire does not move when you check the tie-rod ends, but the tire is still slanted inwards, take a look at your springs and shocks or struts. If the springs are broken or fully compressed when the car is sitting on the ground, then you have to get the suspension pieces repaired. This I HIGHLY recommend taking to a mechanic, even if you DO know what you are doing most of the time. The springs would need to be compressed using a special tool, and if the procedure is done wrong, the springs can shoot off of the compressors and either kill you or cause MAJOR damage to your stuff -- a friend of mine almost died when one of his spring compressors broke ... the spring ended up bouncing around his garage for about 20 minutes, destroying everything it hit, while he hid under the car. Fortunately he survived with no injury, but his garage and car were both totally destroyed in the process).
3. If the springs are not fully compressed while the Bronco is sitting on a flat surface, then it might be the shocks / struts. The only difference between a chock and a strut is that one is in the center of the spring, the other is located right next to it. Make sure that the rubber pieces on your shock/strut are in good condition, and that there is no fluid leakage. If these are broken, I recommend taking your bronco to a mechanic, because as above, these are very dangerous parts to replace if you don't know exactly what you are doing.
The only other issue that I can think of off the top of my head that would cause your tires to slant inwards is loose lug nuts ... but if it is happening on both front tires this is VERY unlikely. Make sure all of your lug nuts are tight or your tires might fall off while driving.
If you have recently swapped out the engine in your bronco for something much bigger, then you might have put more weight on the front suspension that needs to be accounted for ... and none of the above solutions will fix it. For this, you need to upgrade your front suspension to account for the extra weight -- this would require a specialty store, and after-market parts (like a lift kit).
There is also a VERY small chance that you have 2 bent axles ... but if both front tires are slanting in at about the same angle, 99.999% chance that this is not your problem. If it is just one tire that has this problem, then you will probably notice a strange bounce while driving, and this is a more likely scenario ... but I really don't think it's that.
If none of these solutions work ... please put a bit more info about your issue and I will see if I can help some more. If you were able to include a picture of the vehicle that shows how the tires look, that would be a great help. Best of luck .. and be safe if you do the work yourself.
3/13/2019 1:14:03 PM • 1991 Ford Bronco • Answered on Mar 13, 2019
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I need to know what color wires go to the neutral safety switch on a 91 ford bronco...

hello u will find a lot of wiring diagrams and circuit diagrams help books and stuff like this at reliable-store the girl in the chat box can help u instantly... im a frequent buyer there since Im a mechanic so take help from there
1/26/2019 10:10:26 AM • 1991 Ford Bronco • Answered on Jan 26, 2019
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2answers

How do I drain the fuel tank on my 91 bronco?

Disconnect fuel line and activate the fuel pump to pump out the fuel. Install an auxiliary pump to the fuel lines to suck out the fuel
10/3/2018 2:22:41 AM • 1991 Ford Bronco • Answered on Oct 03, 2018
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1991 ford bronco shifting

This website reliable-store.com has the largest collection of repair, service, parts manuals of any vehicle on earth. Best website I came accross for manuals.. Very helpful website
3/11/2018 6:30:28 PM • 1991 Ford Bronco • Answered on Mar 11, 2018
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1991 Bronco 5.0 engine will

Change the air filter. Check the Throttle position sensor and make sure there is no recall on the intake manifold. - I had a Ford Taurus with the 3L V-6 that had an intake manifold issue similar to what you describe. The butterfly in the intake had excessive wear and would stick in a different position causing the car to idle at 1800 rpm. The "fix" was to change the intake manifold. Also, change fuel filter, spark plugs and check distributor cap / rotor and plug wires. Its definitely running rich (exhaust smell). With no CEL I would say its a mechanical issue more than an electrical issue but you cannot rule ANYTHING out based on description. May want to entertain the idea of plugged cats too. GOOD LUCK !!!
1/7/2018 4:12:53 PM • 1991 Ford Bronco • Answered on Jan 07, 2018
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2answers

I have 91 bronco that doesn't engage four wheel drive when you push the button

replace the electric motor on the transfer case
12/15/2017 4:02:59 PM • 1991 Ford Bronco • Answered on Dec 15, 2017
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I have a 91 bronco w/ a 351w. the fuel pump wont stop running

Does the pump stop running when you turn off the key? With electric fuel pump, the fuel pump relay sends voltage to the pump. The control side of fuel pump relay needs voltage and ground. Engine cranking do you have spark at the plugs and fuel injector pulse? Use a gage and check proper fuel pressure, my info says 35--45 psi. Usually, if pressure is too high you check for a problem on the return side. If pressure is too low, you check the supply side of the fuel system. Usually with initial prime the computer grounds the control side of fuel pump relay, for a couple of seconds, then w/o rpm signal, it shuts off. Maybe the ground wire is shorted to ground or problem with computer?
11/10/2017 10:42:15 PM • 1991 Ford Bronco • Answered on Nov 10, 2017
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How to run vacuum lines or correct diagram of vacuum lines on a 5.8 motor

Hi Alan.here's a link to your vacuum line diagram. SAVE 20 ON ONLINE SHIP TO HOME ORDERS OF 100 OR MORE
9/17/2015 12:28:51 AM • 1991 Ford Bronco • Answered on Sep 17, 2015
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Loss of vacuum and stalling when put in to gear.

replace vacuum lines
6/13/2015 2:08:10 AM • 1991 Ford Bronco • Answered on Jun 13, 2015
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Rear window won't go up and down

thats easy,spray the switch at the latch on the drivers side,and open and close it a few times,that switch keeps the window from going up with the gate down and they do get sticky
6/12/2015 2:45:32 PM • 1991 Ford Bronco • Answered on Jun 12, 2015
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2answers

Starter motor run on, starter has been replaced

replace the ignition switch or disconnect the starter cable from the switch and make/fit a push button for the starter motor just like the old fashioned cars like the old mini that had a push button by the handbrake or a london bus that had one on a panel above your head
4/5/2015 6:29:18 PM • 1991 Ford Bronco • Answered on Apr 05, 2015
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On my 91 Bronco, why do the headlights only operate on high beam?

Stuck or "welded" points in the dimming relay. Rebuild, or replace the dimming relay. Find by traceing headlight wire back to the dimming relay.
3/26/2015 2:51:55 PM • 1991 Ford Bronco • Answered on Mar 26, 2015
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I have an 91 bronco with an automatic transmission that wont shift on its own. It will shift fine if you run it through the gears automatically,but doesn't shift when its in drive.

91-bronco-automatic-transmission-wont-h3u3bvaxgt5rbqkhjnnyjnme-5-0.jpg this is the modulator this one is pre-adjusted for A4ld 91-bronco-automatic-transmission-wont-h3u3bvaxgt5rbqkhjnnyjnme-5-2.jpg this is the other one that is adjustable for the c-6 trans 91-bronco-automatic-transmission-wont-h3u3bvaxgt5rbqkhjnnyjnme-5-5.jpg E40D trans they are all different and maybe you'll find it now there is 4.9 motor 5.0 5.8 and all can come with A4ld /E40D / or C6 transmission look for broken or disconnected vacuum lines or if the engine is running rough you must correct the running condition because you are loosing vacuum inches and the trans needs vacuum at a certain level to shift if the engine stutters your loosing the vacuum and it will never shift that's what this sounds like to me or that modulator needs adjustment or to be replaced later man! it's party time!
3/21/2015 12:21:53 PM • 1991 Ford Bronco • Answered on Mar 21, 2015
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Ford 351 windsor engine diagram

ford-351-windsor-engine-diagram-p05qnqdskqjeezv3eiltmave-1-0.jpg Here's a mechanical blow-up of an 80's 351w engine. ford-351-windsor-engine-diagram-p05qnqdskqjeezv3eiltmave-1-2.jpg and the firing order layout. hope this helps...
2/8/2015 2:59:14 AM • 1991 Ford Bronco • Answered on Feb 08, 2015
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Location of fuel sensor

its in the fuel tank near the fuel pump
11/24/2014 6:50:40 AM • 1991 Ford Bronco • Answered on Nov 24, 2014
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Why does my fuel gauge always register full in my

Open wire or the sender is open, ground the sender wire as close to the pump as possible. If the gauge goes to empty then your sender is at fault. If it remains at full then the wire from the sender to the guage is open.
9/30/2014 10:50:39 PM • 1991 Ford Bronco • Answered on Sep 30, 2014
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1answer

1991 ford bronco fuel pump wont shut off

The fuel pump should turn on for about 3-5 seconds when you turn the ignition switch to on. If the engine starts the pump should still continue to run, if you do not start the vehicle the pump will shut off. It sounds like your fuel pump relay is stuck. Sometimes they will stick on even with the key off. The relay should be located in the relay box, under the hood on the drivers side on the inner fender well. You can try tapping on the relays with a end of a screwdriver, etc. See if that does anything for you. If that doesn;t help I will have to look up some info. Been a while since I had issues with that .
3/31/2014 9:36:13 PM • 1991 Ford Bronco • Answered on Mar 31, 2014
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