Skip the auto shop - Our mechanics make house calls

Q: Squeaking sound - 1990 Chevrolet K2500

asked by on

Ok so my pickup out of random started squeaking. I replaced everything i can think of. Gone through 4 different brands of belts, replaced ac bypass pulley twice, tensioner pulley twice, rebuilt water pump, checked power steering pump, replaced power steering pump pulley, replaced alternator, checked tension on belt. Ive done all this. When i drive it sounds more like a smacking sound but the noise decreases as i drive more but never goes away. It does it at idle and at driving. I haven't replaced the harmonic balancer but i don't know if it would cause this sound. Ive taken it into 3 different shops and they don't know.

My car has 295 miles.
My car has a manual transmission.

A: Hi there. It sounds like it could be a harm...

Hi there. It sounds like it could be a harmonic balancer. Before replacing the balancer, check the radiator fan to see if the blades are hitting the shroud or anything else.

Also check the fan clutch, if equipped, for abnormal operation and a possible cause for the noise. Remove the belt and see if the noise goes away; if it remains, then the balancer may be at fault.

It definitely sounds like you’ve covered many of the other possibilities. I strongly suggest having a qualified technician perform an inspection to avoid replacing unnecessary parts. YourMechanic has several available technicians that can assist you with an inspection of the squeaking noise, if you would like to have a mechanic service your car at your location. From there, they can follow up with any needed repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Dash lights on, everything fine on checkup

The reason your Check Engine Light is on would depend on what the particular code stored states. As for this issue, I would recommend getting an engine diagnostic performed by a certified technician. Engine issues typically do not cause the...

Q: Harmonic balancer broke replaced now won't start

There are two main possibilities. Depending on how or why the balancer failed (e.g., did it fail suddenly accompanied by the car engine completely stopping), it is possible the timing belt has slipped or is even broken. It is also...

Q: No brake pressure.

Hi, no pressure on your brake pedal usually means one of two things. If you have had any work done on your brakes, it is possible that there is some air in your hydraulic lines. The air simply has to...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.