Top 10 1989 Ford Ranger Questions & Answers

metal particles on the trigger wheel sensor of the rear differential case, this causes a loose of signal and the light to come on. also a broken tooth on the trigger wheel inside the diff can cause this or a dirty/corroded connection to the sensor from water intrusion.

The coil is mounted on top of the module,I hope this was helpful,If so.please let us know.

Your truck has a A4LD transmission. The older ones had major problems. What i believe is happening with yours is the converter is locking up intermittently. 1st-4th are actual gears for 5th(overdrive) the converter locks. I had the same problem as well as did alot of people I spoke with. I solved it by getting a used A4LD out of a '92 ranger with a 3.0L motor (these transmissions had some upgrades to deal with a number of problems including the one you are talking about.) You will need to swap bell-housings (this requires the pump to be shimmed properly,I paid a shop $100 to install the pump ,with is attached to the back of the bell-housing) There are only 2 kinds of A4LD one for floor shift and 1 for column shift,make sure you get the right one.Good luck.

right hand side fender apron

REMOVAL & INSTALLATION

Gasoline Engines
See Figures 1 and 2



Fig. Fig. 1: Exploded view of the oil pump used on 2.0L and 2.3L gasoline engines



Fig. Fig. 2: Exploded view of the oil pump used on the 4.0L engine-2.8L and 2.9L engines are similar

1. Follow the service procedures under Oil Pan Removal and remove the oil pan assembly.
2. Remove the oil pump retainer bolts and remove the oil pump.

1. Prime the oil pump with clean engine oil by filling either the inlet or outlet port with clean engine oil.
2. Rotate the pump shaft to distribute the oil within the pump body. Install the pump and tighten the mounting bolts to 14-21 ft. lbs. on 2.0L and 2.3L engines; 6-10 ft. lbs. on 2.8L and 2.9L engines or 13-15 ft. lbs. on 4.0L engines.

1. Install the oil pan as previously described. The oil pumps are not serviceable. If defective, they must be replaced.

It's powered by fuse #1 in the battery fuse box, so I would think it should be right there somewhere. If it isn't labeled, see if you can turn the box over to see where fuse #1 leads to.

Here is a diagram.

El sensor esta en la parte frontal superior del motor, a un lado de la manguera que conecta al termostato, tiene dos entradas de espada, remueva el conector, remueva el sensor e instale el nuevo, asegurese que las conexiones esten bien sujetas al nuevo sensor.
Saludos.

There is a starter relay in the circuit in addition to the starter solenoid.
If you have replaced the components, I would guess the problem is in the harness or a connector.

Check for a Thick Film Integrated (TFI) Module attached to the outside of the distrfibutor with about an 8 wire plug on it. That is Ford's ignition module. My recollection is the two screws attaching it to the distributor are odd-ball 7/32 in. size. If the module is taken off, use special ford di-electric grease on the base before re-attaching. For heat dissipation.