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.

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?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Coolant leak from behind the idler pulley

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: Q: Crankshaft position sensor

If prior to the work, no diagnostic trouble code was set (i.e., check engine light was not on) identifying a fault with the crankshaft position sensor, then the likelihood is they caused the problem. In any event, once the "cause"...

Q: Manifold bolts loose and possible vacuum leak.

Hi there. If the intake bolts are loose, then there was an issue with the engine before and a mechanic or someone has removed the intake manifold to fix what ever had failed. It is possible that the mechanic or...

Q: Engine misfire cylinder 3

The misfire could very possibly be from low compression. You want the compression across all cylinders to be within 10% of each other at most. The compression for number 3 is under that threshold. It could be caused by worn...

Related articles

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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
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.