Skip the auto shop - Our mechanics make house calls

Q: Exact location of thermostat.

asked by on

I want to replace the thermostat on my S4 as my temp gauge reads intermittently. All I have found on the web is about other 4.2L V8s and how it is behind he timing belt. I do not have one. My timing chain is on the back end. I want to do it on my own is all. If I have to bring it in I will, but rather do it myself.

My car has 113000 miles.
My car has a manual transmission.

The thermostat on the rear chain-driven 4.2 V8 is located on the drivers side front of the engine. It is located down low just above the engine oil pan in a black plastic housing. Be certain to use the correct coolant as mixing coolant types can cause clogging of cooling system components such as the radiator or heater core. If you are unsure of it’s replacement, have a certified technician perform the thermostat replacement for you.

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
  1. Home
  2. Questions
  3. Exact location of thermostat.

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: Manual transmission not shifting smoothly.

The first thing that would need to be checked is where the oil leaks are and if the oil is leaking onto the clutch causing a chatter in the clutch or you are feeling a misfire in the engine from...

Q: Temperature gauge keep going up and down

Hi there. There are several possible causes for the temperature gauge going up and down. First, you need to verify that the cooling fans are working. If the fans are not working, begin by checking the fuse. If the fuse...

Q: The CD will not eject a disk.

Hi Joe. This is a concern I've experienced on multiple Lexus and Toyota vehicles and, yes, this inserting a tool into the cd door will damage the unit. What sounds like has happened is that the internal eject mechanism has...

Related articles

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...
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.