disconect the negative wire from your battery first off. If needed lift your front end so you may comfortably get under the front of your truck, then disconect the wireing harness form the actuator, take an open end wrench and turn out the actuator, install is reverse.. Really simple job should only take 30 minutes total...Good luck
There is either a problem with the actuator in the front differential--BAD ACTUATOR. Are there is a problem with the differential ---RING and PINION asembley.
Inside the headlight switch.
key does not start the truck and will not come all the way back to lock.
To change the speedometer cable on a 1990 Toyota truck, disconnect the cable, feeding it through the grommet, then disconnect it from the transmission. The process can then be reversed with the new cable.
Take it to a shop
General Motors products do not use inertia/reset switches
the ign switch or the key & tumbler ???
oil pressure switch or knock sensor
1990 ford truck no spark
Near the starter on the exhaust header. If it is 1990 it will be fun to break the rusty sensor out of the truck. good luck
1. Bad pressure switch. 2. Bad pressure switch pigtail. 3. The system is low on freon.
Bad bulbs Bad dimmer switch