Skip the auto shop - Our mechanics make house calls

Q: Compressor shaft seal leak

asked by on

I use a maxima 2004.This year march till date have changed compressor three times due to shaft seal leak. The mechanics in my state don't seem to understand what has been causing the leak. Could it be a blockage in the ac system forcing the compressor to leak? Can u help me identify what seems to make all the compressor I bought to be leaking oil at the shaft.

My car has 190000 miles.
My car has an automatic transmission.

Hi and thanks for contacting YourMechanic. Put a manifold set (A/C gauge set) on the A/C ports and check the system when it is running on high A/C. Look to see what the pressures are on the high side and the low side.

For normal use, the pressures should be 55 to 20 on the low side and 250 to 170. If the pressures are higher on the high side and exceeding the limits, then the seal on the pump will blow out. If the A/C has high pressures, then the FOT (fixed orifice tube) is plugged up and needs replaced. However, make sure that the A/C oil is in the system for the compressor or the compressor seal will leak. If you need further assistance diagnosing your vehicle, then seek out a professional, such as one from Your Mechanic, to help you with your A/C problem.

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

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: Acceleration trouble.

Hello, It sounds like the vehicle responds adversely to various loads being put on it such as sitting at the stop light and being put into gear. Both of these situations cause a load to be put on the motor...

Q: Timing belt chain replacement

sent to CS.

Q: I have the e60. What is tge thermostat looming thing located besides the ac compressor

If the system is still charged with refrigerant, thoroughly evacuate the system using a recovery machine. Note that it is illegal to intentionally vent refrigerant directly to the atmosphere and very dangerous, too. That is, even if a system appears...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...