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.

1994 Chevrolet... | Answered on Jun 09, 2017

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

1994 Chevrolet... | Answered on May 03, 2015

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

1994 Chevrolet... | Answered on Sep 04, 2014

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

1994 Chevrolet... | Answered on Aug 27, 2014

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

1994 Chevrolet... | Answered on Mar 13, 2014

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

1994 Chevrolet... | Answered on Feb 11, 2013

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.

1994 Chevrolet... | Answered on Dec 09, 2012

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

1994 Chevrolet... | Answered on Jun 09, 2011

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

1994 Chevrolet... | Answered on Apr 20, 2011

deff. start with a filter replacement.

1994 Chevrolet... | Answered on Apr 06, 2011

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.

1994 Chevrolet... | Answered on Feb 22, 2011

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.

1994 Chevrolet... | Answered on Feb 01, 2011

Check the fuse and wiring connections.

1994 Chevrolet... | Answered on Jan 12, 2011

sloppy linkage bushings replace them

1994 Chevrolet... | Answered on Jan 12, 2011

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.

1994 Chevrolet... | Answered on Jan 03, 2011

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.

1994 Chevrolet... | Answered on Oct 06, 2010

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

1994 Chevrolet... | Answered on Aug 26, 2010

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.

1994 Chevrolet... | Answered on Aug 26, 2010

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