Skip the auto shop - Our mechanics make house calls

Q: Coolant leak from behind the idler pulley

asked by on

Why is my idler pulley squeaking and leaking coolant

My car has 180000 miles.
My car has an automatic transmission.

A: It is more likely that something above or b...

It is more likely that something above or behind the idler pulley is leaking coolant and migrating to other areas, like the idler pulley. It can be the water pump, thermostat housing, or seals. The cooling system should be pressure tested by a certified technician, like one from YourMechanic, to find the source of the coolant leak.

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: Stereo system not working.

Sometimes aftermarket stereos have a small fuse in the back of the unit, this could be your problem or the radio could be fried, a mechanic would have to test for power at the connecter behind the radio which normally...

Q: Overheating and leaking from around the heater core

If your engine is leaking coolant, this is the reason for the overheating. The cooing system requires a specific level of fluid in order to function properly. If the fluid is leaking by the firewall near the heater core, the...

Q: Hose leaking antifreeze

Hello. The most common coolant leak that suddenly occurs on this engine is a water pump malfunction. It will start leaking coolant and it will appear to come from near the rear of the engine. It is also possible that...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...