SPONSORED LINKS

Where is the engine coolant temperature sensor located?

Tiny
BHAMDOC1973
  • MEMBER
  • 2013 HONDA ACCORD
  • V6
  • 2WD
  • AUTOMATIC
  • 180,000 MILES
Where is the ect sensor on these v6 3.5l motors? I replaced the motor, and this is all the codes I have. I replaced the one on top of thermostat from old one, still says ect 2.
Thursday, April 6th, 2023 AT 12:55 PM

10 Replies

Tiny
STEVE W.
  • MECHANIC
  • 12,970 POSTS
ECT 2 is hidden underneath. You need to drain the coolant, lift the car, remove the undercar shield. Then look up on the back side of the radiator to find it.
Image (Click to make bigger)
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Thursday, April 6th, 2023 AT 4:07 PM
Tiny
BHAMDOC1973
  • MEMBER
  • 1,291 POSTS
It is connected, how do I check if it's the wire or the sensor?
Was this
answer
helpful?
Yes
No
Thursday, April 6th, 2023 AT 5:25 PM
Tiny
STEVE W.
  • MECHANIC
  • 12,970 POSTS
Easy, plug in the scan tool and look at the coolant temperature for ECT2 Then unplug the sensor. It should show a big change if the sensor wiring is good. Most drop to -40 when unplugged and if you short the two pins it should read like 300 degrees.
Was this
answer
helpful?
Yes
No
Thursday, April 6th, 2023 AT 5:43 PM
Tiny
BHAMDOC1973
  • MEMBER
  • 1,291 POSTS
I took a scan earlier; this means this is not connected, correct? Weird, am almost sure all wires are connected.
Image (Click to make bigger)
Thumb
Was this
answer
helpful?
Yes
No
Thursday, April 6th, 2023 AT 5:47 PM
Tiny
BHAMDOC1973
  • MEMBER
  • 1,291 POSTS
I found it, stuck underneath the radiator, same connector same color as the one I plugged into it, so I plugged the right one and now code is gone, but there is an exact looking connector that also plugs in somewhere, black with 2 wires with a rubber protective around it, green and silver wiring that I don't know where it goes. It extends 6 inches in length.
Images (Click to make bigger)
Thumb
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Thursday, April 6th, 2023 AT 6:01 PM
Tiny
STEVE W.
  • MECHANIC
  • 12,970 POSTS
Well, I see a green and gray that is for transmission fluid temperature in that area. ECT 2 should be a light blue and a dark blue.
Was this
answer
helpful?
Yes
No
Friday, April 7th, 2023 AT 3:09 AM
Tiny
BHAMDOC1973
  • MEMBER
  • 1,291 POSTS
Okay, let me look for a fluid temperature sensor.
Was this
answer
helpful?
Yes
No
Friday, April 7th, 2023 AT 5:43 AM
Tiny
BHAMDOC1973
  • MEMBER
  • 1,291 POSTS
Everything is meant to be, lol, looked and looked and then decided to remove the wheel again, and then right there in my office hidden on bottom of the transmission by the engine mount. The important thing is that this allowed me to see that I have forgotten to tighten the bolts on that mount because I wanted to keep it till the end, all 4 bolts on that mount were loose, strange things happen for a reason, thanks for your help.
Was this
answer
helpful?
Yes
No
Friday, April 7th, 2023 AT 7:07 AM
Tiny
STEVE W.
  • MECHANIC
  • 12,970 POSTS
Good to hear. Yeah there have been times that I'll start connecting things and find the loose bolt or connector that is damaged, normally the loose ones happen just before lunch.
Was this
answer
helpful?
Yes
No
Friday, April 7th, 2023 AT 7:25 AM
Tiny
BHAMDOC1973
  • MEMBER
  • 1,291 POSTS
Lol
Was this
answer
helpful?
Yes
No
Friday, April 7th, 2023 AT 7:58 AM

Please login or register to post a reply.

Related Coolant Temperature Sensor Content

Coolant Temperature Sender Replacement
VIDEO
Coolant Temperature Sender Replacement
Instructional repair video
Coolant Temperature Sensor
GUIDE
Coolant Temperature Sensor
An engine coolant temperature sensor also described as an ECTS (electronic coolant temperature sensor) is designed to tell the car's computer how hot the engine is running....
VIEW MORE

Sponsored links