1990 Chevrolet C1500 - Answered Questions & Fixed issues

Hey One, Sounds more like the fuel pump...just my 2 cents worth... Chevrolet 1500 1988 1998 Repair Manuals Chevy Service Manuals Original Shop Books Factory Repair Manuals

indicates injectors ( dirty /blocked tips, low fuel pressure--up to 65 psi-injector wiring and harness , ECM problem run the fault codes with a scanner that has GM protocol installed

I recommend you check the fuel pressure regulator diaphragm for proper installation and tears. Did you get a new one with your rebuild kit?

You first need to check the fuel pressure, an easy way to access this is to buy a can of spray starting fluid, spray it into the TBI throttle valve and if the truck starts and dies you have no fuel pressure. Replace the fuel; pump, and make sure you get the right pump, it is a low pressure system.

Possible out of adjustment, bad proportioning valve, bad springs on brake shoes, shoes out of alignment, leaking wheel cylinder. Good luck

Hi Laura, One of the easiest ways to get wiring diagrams is to go to Autozone website and sign up as a Do It Yourselfer, Autozone owns Alldata. They are one of the largest companies that provide Wiring diagrams,etc, for pretty much everything on the road and it's free. Hope this helps, Good Luck, Randy. I’m happy to assist further over the phone at https://www.6ya.com/expert/randall_d932ef6e01588b0f

oil pressure switch normally located close to the oil filter or around the oil pan and lower engine block where the oil is stored

eighth digit

Check the ground at the coil. If ground is good. check for ground at the distributor module. If both are good, you have bought a bad part. Both can be checked.

6cyl or 8cyl? Have you verified the rotor is turning inside the dist.?

Possible ignition module

Try checking with the below link and input all the information on your vehicle. It should give you an idea what transmission will interchange. Car Part com Used Auto Parts Market

I would take it to a good mechanic and have him check to see if it needs a tune up or if it has jumpt time. Sometimes the timming chain will stretch if the engene has a lot of miles on it.

Normally there are bolts on the latch and in the pins on the tailgate itself. You might have to adjust all 4 of them in order to make the rattling stop

Standing in front of the engine, Number one cylinder is the first one on the right. Two is the first one on the left, three is the second one on the right, four is the second on the left...........

Have you checked/replaced the O2 sensor(s). They produce the data that your computer reads. Bad/clogged O2 sensors will trick the ECU into running lean/rich.

The Compressor doesnt have a fuse. whats the issue

You'll need to remove the bolts on the motor mounts and jack up the front of the engine to get enough clearance to get the pan clear once all the pan bolts are removed.

Do they stay on if the brake light switch is unplugged ?

First, get a service manual, I don't recommend trying to track down these wires by hand (and I don't have my books anymore). Gotta trace the solenoid power back to the ignition switch. Since this power works separately from the fuse box it could be that the fuse is blown, after that pull the ignition switch. A test light should tell you where the power isn't... When I did an engine swap, I missed the lead to the battery that powers the fuse box for the stuff in the cab. Happy hunting!