20 Most Recent 1990 Chevrolet C1500 - Page 9 Questions & Answers

I will assume you really have a G10-20-30 van.(half/ 3/4 or 1 ton full size van)
The fifth digit of your vin should be a G.
Not the 2wheel drive pickup indicated.
That being said, your Gadiator is an aftermarket conversion van with a loose column.
This would have to be a loose tilt bowl on the steering column.
After removing the steering wheel and lock plate, you will find four inverted torx bolts that hold the tilt bowl to the column. Two will be backed way out and loose.Remove these bolts and appy loc tite to the bolt threads, then reassemble.

You can change pick-up coil, you need to remove distributor (mark where rotor is pointing first) Then you need to remove pin in cam gear on end of shaft to remove gear so you can remove shaft from housing. Then you can replace pick-up coil. Install in reverse. Note when removing distributor rotor will move to the right as you lift distributor out, move rotor to right of mark you made when installing distributor back in.

First make sure the rear shoes are properly adjusted. Then try pumping the brake pedal a couple of times and see if it gives you full pedal. If it doesn't then get a helper and pump the brake 2-3 times and then open the bleeder screw. When the pedal sinks to the floor close the bleeder screw BEFORE you let the pedal return to up. Repeat this on each wheel, starting at the farthest from the master cylinder. Do it 2 or 3 times or until the brake fluid comes out in a steady stream. While you are doing this keep the master cylinder full and the cover on. This should give you back your pedal. Hope this helps.

your fan should be on the passenger side just under the dash just on the right side.

if your concernd about it i would suggest changing all the fluid in the rear diff. or have an oil change shop do it. I also found this site to help you. http://autorepair.about.com/library/faqs/bl412h.htm

it is on the passenger side above the starter. It is kind of a squeeze to get to because the exhaust manifold is directly above it.

CHECK FOR INTAKE LEAK OR BROKE MISSING VACUUM HOSES.IT COULD BE AROUND THROTTLE BODY GASKET.THE PVC VALVE IS STUCK OPEN OR COME OUT OF PLACE.SCAN IT CHECK FOR EGR VALVE FAULT CODES.IF IT STUCK OPEN.IT WILL CAUSE IDLING PROBLEMS.MAKE SURE PLUGS AND WIRES IN GOOD CONDITIONS.

Is the coil connected to the ditributor? did you knock any connections off in the process? Does it turn over but not fire? do you have spark at the plugs? Are you sure of cylinder location in respect to firing order? Did you-and check this first as with any elec. problems-blow a fuse in the ignition circuit? good luck!

The idea that the injectors are clogged is almost never the problem - if you're not getting fuel - then most likely it isn't the injectors - you don't give symptoms so I am in the dark but I will suggest if the engine isn't getting full power it isn't the injectors. Also try taking one off - just one - - and see if a local Advance or dealer can check just the one - if one works then most likely all do as they all got the same gas.

did you replace the oil pressure switxh on the back of the block? if it goes bad and they do it will not allow you to run the truck.

this is usually caused by a sludged up idel speed control valve, do the following to correct an clean it.
, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

ON GM MODELS THE FIRING ORDER IS ON THE INTAKE SO LOOK FOR 8 NUMBERS STARTING WITH #1

is it the field wire that excites the regulator, if so , it will go to a key on 12 volt source, usaully to the fuse panel

sorry to say but yes have to drop tank unit access is on top of tank

You may need a intake manifold gasket.If it puts prestone in the cylinders then it will be a ***** to start.You also need to check check the fuel filter.

Check the crank sensor for failure. It is relatively easy to change and it is what tells the computer that the engine is turning over. If there isd no crank signal the computer wont fire the injectors.

Check your brake fluid level.