Don't know what transmission my '86 Bronco II has, C5 or A4LD

this is the modulator this one is pre-adjusted for A4ld

this is the other one that is adjustable for the c-6 trans

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!

Check your Transmission Fluid. If it is low fill to the recommended level. If it smells burnt it is time for a Rebuild.

yes

If you have the C5 trans, here is the info:

C5 Transmission

1. Disconnect the negative battery cable.
   
2. Raise and support the vehicle safely.
   
3. Remove the downshift linkage rod from the transmission downshift lever.
   
4. Apply rust penetrant to the outer lever attaching nut to prevent breaking the inner lever shaft. Remove the transmission downshift outer lever attaching nut and lever.
   
5. Remove the two neutral start switch retaining bolts.
   
6. Disconnect the multiple wire connector.
   
7. Remove the neutral start switch from the transmission.
   

To install:

1. Install the neutral start switch on the transmission. Install the two retaining bolts.
   
2. Adjust the neutral safety switch following the above procedure.
   
3. Install the outer downshift lever and retaining nut, and tighten the nut. Install the downshift linkage rod with the retaining clips.
   
4. Connect the wire multiple connector. Check the operation of the switch. The engine should start only with the transmission selector lever in N or P.
   

If it is the:
C3 And A4ld Transmissions
It's on the transmission....


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Neutral start switch and its location on the C3 and A4LD transmissions

Sounds like, unfortunately, that your reverse gear went out. The only way to get it fixed is to take it to a transmission speciality repair shop to have the gear replaced. Also a very expensive job, could be as much as $1000 to $1500.

all bronco II's that i have seen have 2 bucket seats up front and 1 bench in the back that usually had 3 sets of seatbelts.

there are two screws in the healights. Undo them from the front with a philips head screwdriver. Pull off the wiring harness from the back of the bulb under the hood and remove your light. Take it to your local auto parts store, (unless you already have your new lights!) and they'll get the right ones for you. Repeat the procedure in reverse.

The solenoid on your starter is probably no good. Just get a new starter. Theres no starter that will "grab the teeth better", theres just new ones that work and old ones that **** out

oh man, i had one of these. Let me tell ya its only gonna get worse. The A4LD was hard trans to work on, and was desighned with a flaw that transmission re builders correct when rebuilding

It grinds just sitting still? Will it do it with the transfer case in neutral or 4x4?