Where is the engine coolant temp. Sensor?

Tiny
DSPLC
  • MECHANIC
  • 1999 TOYOTA CAMRY
I am having a hard time starting the car when the outside air temp. Is around 100 degrees (engine cold). I have to step on the gas a little (around 1300 RPM) to keep the engine running for around a minute. After that, it runs normal. I do not have a problem starting the car at night or winter time. Only at sizzling hot summer time. I read a few topics here that the Engine coolant temperature sensor might answer the problem. Where is it located and how do I check it if it is working fine?
Thanks.
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Wednesday, August 15th, 2007 AT 1:18 AM

8 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
On top to the rear of engine.

I attached a picture. Click on the image below to enlarge it!
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Wednesday, August 15th, 2007 AT 2:30 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
What size engine there's 2 of them

Merl, I tried to come up with both but you beat me on 1. They are in different locations-yours is right, its to the right from the A/F Ratio sensor.

The other one you need a microscope to view it.
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Wednesday, August 15th, 2007 AT 2:51 AM
Tiny
DSPLC
  • MECHANIC
  • 220 POSTS
Thanks for the immediate response Merlin and Rasmataz. The picture is a little small, I enlarge it and I see # 7 and # 10. The one behind the cylnder head. I see 2 sensors close to each other in the aluminum water pipe, one is close to the cylinder head (Small sensor) and the other one close to the upper radiator hose (big sensor). Since the picture is blurry when I enlarge it, I do not know which one is it. : Can you response again please. Thanks again.

Oh, Rasmataz, I got a 5S-FE engine 4 cyl 2.2 L. By the way, you change your picture. Now I have to enlarge it to see you better. :Lol: :lol:
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Wednesday, August 15th, 2007 AT 10:53 AM
Tiny
RASMATAZ
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  • 75,992 POSTS
Its no.7 CTS normally its threaded in the intake manifold or at the goose neck. It has the color wires Brown and a Green/Black on the connector. I got the pic even for the 3.0L but refuses to get bigger lol-sorry this the best I could do.

Have a nice day
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Wednesday, August 15th, 2007 AT 3:53 PM
Tiny
DSPLC
  • MECHANIC
  • 220 POSTS
I found it. The brown and green/black 2 wires attached to the big sensor. I am learning a lot at this forum. Thank you very much.
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Wednesday, August 15th, 2007 AT 10:14 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,554 POSTS
Good to hear, please use 2CarPros anytime we are here to help.

Best, Ken
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Monday, December 19th, 2016 AT 3:59 PM
Tiny
OILHANDS
  • MEMBER
  • 1 POST
  • 1990 TOYOTA CAMRY
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 240,000 MILES
I'm looking for a simple answer to my question, I've got the part I need for my Camry, but I can't locate the part underneath the hood to replace. Can anyone help me in the matter? It's the temperature gauge sensor switch
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Saturday, June 6th, 2020 AT 12:29 PM (Merged)
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
The location is in the diagram. Looks like two wire connector, wire colors-- green--brown.


https://www.2carpros.com/forum/automotive_pictures/170934_camry_coolant_temp_sensor_1.jpg

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Saturday, June 6th, 2020 AT 12:29 PM (Merged)

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