Top 20 1988 Chevrolet Silverado 2500 Questions & Answers

A wiring problem.

Right here 1988 90 Chevrolet Pickup Alarm Remote Starter Keyless Entry Wiring

disconnect the wire from the switch and screw the switch body out if brake lights are NOT coming on , screw the switch in if lights Stay on , only turn 360 degrees then attach wire and test

Hey Glenda, the belt slipping , low fluid level , air in system , pump getting bad.with motor running open cap and look in if it looks like a cherry milk shake that's could be cavitation (air) or water,

Does it shudder when it dies ?

Is the check engine light on ? Have you checked the idle air control valve ?

i would start by checker your cat converter is not clogged. There are 3 way to do this you can have someone start the truck and rev it while you check the exhaust coming out of the tail pipe it should be a petty good flow coming out of the tail pipe, if no flow is coming from the pipe then yourcat conveters are clogged. The second way is to remove the o2 sensors in front of the cat converter and try driving it to see if it was accelerate, if you can accelerate then you know it's your converter if not then i would look athe the distributor and or timing.

That truck should have a spark plug gap of 0.035 inch.

Clean or replace the AIC Solenoid if you have one

Clogged Exhaust Converter

Sounds like you have an intermittent electrical problem somewhere in the ignition circuit. I would check all of the electrical plugs and connections for corrosion. I would start with the power wire to the ecm which should be a small red wire connected to the poss. terminale on the battery. Also check all ground connection. The ecm power wire might also be connected on the other end of the poss cable on the starter.

Either you have a short to ground in the wiring harness or heater relay is bad. the relay I am referring to is generally located close to the blower motor and acts as a Potentiomiter to control fan speeds.

replace switch

What marks?If you haven't moved the crank- stab the dist back in there,until you like where #1 Points on the capIf you moved the crank, bring it up #1 toTDC on compressionstroke

Check air filter and housing to see if airflow is obstructed.Check Throttle positioning sensor, replace as needed.Check plug wires, replace as needed.

more information and i can help....you changed the oil and now no spark?

Sounds like a flooded carburetor. Possibly float needle dropped since bowl was not full enough to keep float needle in place. This could be from improper adjustment during carburetor overhaul. When floats are set, some have adjustments for both top cutoff and bottom drop.Now if black smoke is not from exhaust pipes, you have a bigger problem. Could new fuel be contaminated with diesel? Also depending on carburetor type, the rear barrels of a 4 barrel carb can soot up if the rear barrels are not often open. Some rear barrel actuators are vacuum operated, others are mechanical links.Some other thoughts are metering rods can be extended and jam if either the seat unscrews or the rod hangs up. Not common, but possible. Free floating rust could jam the metering rod in almost any position. When placing a carburetor on the intake manifold, NEVER turn the carburetor upside down or at any angle that the truck would not normally go. The float pin can slide out of some models. Also, was the gas used from a 2 cycle engine like a boat or lawnmower that has oil in the gas?

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unbolt the steering shaft