20 Most Recent 1994 Chevrolet C2500 Questions & Answers

Sounds like it could be a vacuum leak or EGR valve stuck open. These drop out of run ability consequence with wide open throttle.

I would recheck the firing order for the plugs as that will be the cause of the back firing the timing will be 12 degrees advanced

so its and AUTO MATIC as if auto matic check the tranny fluid could be low check when warn in neutral do not overfill.

Check fuel filter for blockage ,check spark plugs and leads.Is it fuel injected or carby.

what is the problem ???? the ECU doesn't usually cause a problem

Hello
The fuel pump is elelctic and it is located inside the fuel tank, the fuel tank must be removed to service the fuel pump.

If the engine will not crank, it could be the starter, the neutral safety switch, or a bad connection.A mechanic would check the starter circuit back to the key switch.

350 v8? a lifter maybe?.run a cleaning agent and drain the oil.there are other noises but that one is common

it prob isnt the heater core usually when that goes u blow antifreeze steam into cab from heater vents. prob water pump or pin hole in radiator line if from the front of the engine or bad gaskets or bad freeze plugs if from the rear also check ur thermostat to make sure it working prop because u could simply be blowing out ur over flow line cause **** is plugged an over heating

deff. start with a filter replacement.

Sounds like your thermostat is stuck open or you have low coolant. Even if the thermostat is new, don't assume it's good. Most are made in mexico, And I usually have to put in 2 or 3 to get a good one.

Never use silicone on a lubrication oil circuit.It will only stop something up somewhere and not help the oring seal.Clean the surfaces with scotchbrite and install dry.If the adapter housing is cracked then replace it.

Check the fuse and wiring connections.

sloppy linkage bushings replace them

Blower motor is on passenger side under dash. Disconnect neg side of battery then then blower motor wires and hose. Should be 5 screws holding in motor - remove. May need to take out glove box and kick panel to give you more room. Disconnect ECM wiring and bolt from right side of instrument panel. Gently pull down instrument panel and remove blower motor and fan. Install new motor and fan. Hope this helps - let me know. Thanks.

you may have to much play in the distrubiter try to shake the shaft and it should not move to either side thats if it has a distrubiter if not do a fuel pressure check to see what the pump is running at and you may also want to do a compression test and a maybe a leak down test to see if you may have any burned valves.

how about the deposits on the old plugs? did they all look the same or were any a light tan color?? if so suspect an intake or head problem, if not do a comoression check and have a real time scanner check done for sensor and actuator analysis

When you uplug the wire from the temp sending unit, the RPM should increase from about 750 to 1000. This cold condition causes the computer to react this way. If this is happening, it is a good indication that the wiring is OK, then I would start with the gauge and the wire connection on the gauge. Trace the wiring back from there to the sending unit and look for damage or a loose/unplugged connector.