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Engine coolant sensor replacement

Tiny
JJWK427
  • MEMBER
  • 2011 JEEP GRAND CHEROKEE
  • 3.6L
  • V6
  • 4WD
  • AUTOMATIC
  • 42,000 MILES
Trying to replace ect sensor on my vehicle but I can not locate. It or see it or find a procedure to replace it Need help
Monday, August 4th, 2014 AT 11:02 AM

9 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
The Engine Coolant Temperature (ECT) sensor on the 3.6L engine is installed into a water jacket at rear of the cylinder head on the left side of the engine. Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Monday, August 4th, 2014 AT 12:44 PM
Tiny
JJWK427
  • MEMBER
  • 4 POSTS
Thank you for picture, I have that picture also, is this picture on left side of engine head or back of head
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Monday, August 4th, 2014 AT 1:13 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Yes, rear of the cylinder head on the left side of the engine
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Monday, August 4th, 2014 AT 1:15 PM
Tiny
JJWK427
  • MEMBER
  • 4 POSTS
You can not see anything, is there Anything to remove to help access it
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Monday, August 4th, 2014 AT 5:57 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Get a flashlight and you may need to remove a cover on top of engine to see it.
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Tuesday, August 5th, 2014 AT 6:05 AM
Tiny
JJWK427
  • MEMBER
  • 4 POSTS
Thank you for your help, I never changed a ect sensor on on this particular vehicle. I am very comfortable around engine's but there is so much plastic and stuff on and around this engine. It is not a simple procedure to change. Was just hoping someone has changed one and could shed some light on how to change it
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Tuesday, August 5th, 2014 AT 7:08 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Well you have to remove most of the crap around to get to it.
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Tuesday, August 5th, 2014 AT 7:10 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
No there is only one sensor now it's going to have to be checked for a shorted wire or possibly a bad pcm or any of the things listed in pic
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Tuesday, March 22nd, 2016 AT 12:24 PM
Tiny
VENOOM45
  • MEMBER
  • 1 POST
My engine light is been on for a while, so I went to auto advance and autozone and they ran the scanner. Both test came with the coolant tempeture sensor, so I took the jeep to pepboy and replace the sensor. So, after driving the jeep for a while the engine light came back on again, so I took the jeep back for scanner and it gave me the same reading. Sensor temp coolant. Is there something else I'm not doing right? Or there's more than one sensor? Please help.
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Tuesday, March 22nd, 2016 AT 5:01 PM

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