20 Most Recent 1989 Chevrolet K1500 - Page 4 Questions & Answers

at idle it should be about .3-.5 volt. and increase smoothly as the throttle is slowly moved to wide open.

Bad injector on the throttle body. Crank engine and see if you can see the injector that is not spraying fuel with air cleaner removed.

probably take to a dealer and have your computer flashed,sounds like a security issue.

It's either your battery or alternator have them tested. If your alternator is bad it wont charge the battery. If the battery is bad it won't hold the charge from the alternator. Good luck!

It needs to be scanned and see what the temp sensor is reading, it could be way off. thats the first place to start.

THe power and grond wires from the battery have been an issue on that truck for years. Firts - the ground wire goes to the aluminum accesorie bracket on the front of the engine. oddly enough it will supply enough of a ground to run the engine,fuel pump,lights,radio ect. but not even click when the key is in the start position. usually when this happens the little wire coming from the battery ground wire going to the fender naxt to the battery to a 10mm bolt is burnt also as it usually tries to carry the current to start the engine but cant so it gets burned up. Move the ground wire from the accessory bracket to an intake manifold bolt on the right front of the intake OR the thermostat housing bolt where the pcm wires are connected. make sure you clean the bolt in which you move the cable to.
now.... another problem is that the + and - cables can corrode inside of the casing and you can not tell sometimes. sometimes you will see a swollen spot or bubble in the cable where is has corroded and is no longer making contact inside the insulation. Once again until it completely fails inside the insulation it will run some of the vehicles accesories. I was stumped on one of these at the dealer once and never forgot what i just told you. FRUSTRATING so dont feel bad. I hope i have helped you - Good luck! Scott

With a warm engine and timing light ready (engine running) disconnect the single connector (black and brown wire) located on the passenger side firewall. It sticks out of the main wiring harness. Set the timing by rotating the distributor. Clockwise to ****** the timing and counter clockwise to advance the timing. Lock the distributor in place @ 4 deg. before top dead center. Shut the truck off and reconnect the black and brown wire.

Go to an auto parts store,speed shop,engine shop,etc

They are the same size as the ones you have !!?

Some times it may happen due to malfunctioning of VSS. You can get further details about vehicle speed sensor at http://www.wholesalesensors.com/

check if any electonics are on when you turn your vehical off. also 1 in about 9 batters bought from a store are defective so go back and get it checked. also check if your battery cables are on nice and snug.

change out your distributor cap and rotor button