1990 Chevrolet C1500 - Page 9 - Answered Questions & Fixed issues

did you unplug the wire behind the distributor before you timed it?
if not try that and retime it then plug it back in also you might go ahead and replace the knock sensor. I know you checked it

Try and loosen the brake line at the master cylinder to let pressure off...lee

If you look at the fuse panel there are two silver 30 amp fuses on the right side or there should be. they are in the blocks marked POWER with the arrows pointing to the right. One is for the windows the other is for the power door locks. Not sure which is which try both hope this helps.

It does seem to be a fuel problem, If your engine is fuel injected the fuel pump is in the gas tank. As far as the ground it is grounded through its harness and mounting.. First thing I would do is put a fuel gauge on the fuel rail fitting and check fuel pressures. Pump wil run for a few seconds when the key is turn ON., and then stop ( assuming its working ) A lack of pressure willindicate an inop pump, or even possibly a clog in the fuel filter. Let me know.

yul have to drop ur column down to get to it, not real hard to change just bolts to side of column. do not need to take column apart

Run a new wire from the fuse to the power side of the brake light switch.Problem solved

Have you checked the fuel pressure?

No its just the 2 bolts.

u must just release the clips,no trick that I know of.

EGR valve problem or possible fuel pump problem.
Have fuel pressure check if good then go after the EGR Valve this controlls idle and could be carbon up. Clean with carbon cleaner or replace located on throttle body.

that is strange the oil pressure only builds up when the motor is running i would be wary if it was me buying it hope this helps Jim

disconnect the battery for 10 minutes or use a scan tool to erase them. if the light comes back on in a few miles (about 2 miles as a rule) u have not fixed the problem

there is no power to the coil,check the wiring to it or your rotor or distributor cap are bad

Yes, it will fit.Years that fit are 89 to 94.Appearance may be different it steering wheel between a chev or gmc,but wiring should be a exact fit.Other differences in columns are column shift(auto)w/tilt or w/out tilt wheel or floor shift(standard)w/tilt or w/out.

did you change the tourq converter?and did you get it all the way into the pump? or is your shifter hung up?

Hi, It seems to me all the problems with this tranny are electrical related, that tranny has about four solonoids, for shifting, line pressure, etc, I would have it scanned for trouble codes, I have the same van but am having trouble with hard shifting, also soloniod problem. hope this helps.

Look under the Hood and Locate the Fuse Relay Box. It should be on the Drivers Side Torwards the Firewall. The Starter Relay is Inside this Box, The Diagram for the Maxi-Fuses and Relays is on the Inside of the Box Lid or Inside the Owners Manual. Please Rate My Response! Thanks!

hi..check out the relay switch which could
be one of the reason for the failure.If there is
a problem with the relay replace it.
try it out..
thank u..
rate me..

change disturbutor cap and roter

check the fuse and relay