SPONSORED LINKS

Engines fans run all the time

Tiny
TWW1098
  • MEMBER
  • 1998 TOYOTA CAMRY
Cooling fans run all the time, Removed relays, fans stop, checked what I thought was temp sensor, was closed but fans still run, probably temp gauge, what turns fans on? Sensor? Location?
Thursday, August 28th, 2014 AT 1:55 PM

8 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,896 POSTS
Hi:
The cooling fans are powered by the PCM. A temp sensor sends a signal to the PCM indicating coolant temp. Once a certain temp is reached, the PCM sends a signal through the fan relay which then sends power to the fans.

I need to know what size engine this vehicle has to provide sensor locations.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
+2
Thursday, August 28th, 2014 AT 7:38 PM
Tiny
TWW1098
  • MEMBER
  • 5 POSTS
2.2 litre 4 Cylinder, 1998 Camry LE
The A/C is unplugged also, the condenser coil took a hit and I have not replaced it, would this also cause the fans to run constantly?
Was this
answer
helpful?
Yes
No
+1
Friday, August 29th, 2014 AT 4:06 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,896 POSTS
I don't feel that would cause them to stay on. As far as the sensor, it should be located on the top rear of the engine. See the pic attached.
Image (Click to make bigger)
Thumb
Was this
answer
helpful?
Yes
No
Friday, August 29th, 2014 AT 7:14 PM
Tiny
TWW1098
  • MEMBER
  • 5 POSTS
I pulled the sensor from the a/c out of the line to the condenser and plugged it in and they stopped running, Whys that? Is it a pressure sensor? There no freon in the system. Matter a fact the system has no condenser.
Was this
answer
helpful?
Yes
No
+1
Saturday, August 30th, 2014 AT 3:24 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,896 POSTS
What sensor are you referring to?
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Saturday, August 30th, 2014 AT 7:16 PM
Tiny
TWW1098
  • MEMBER
  • 5 POSTS
It would normally be located in front of the Air conditioning condenser, out front of the radiator, threads into the actual a/c line, I think they're aluminum. Near a beer can sized drier, almost the size of a spark plug.
Was this
answer
helpful?
Yes
No
Sunday, August 31st, 2014 AT 4:13 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,896 POSTS
I think you are looking at the pressure switch.
Was this
answer
helpful?
Yes
No
Monday, September 1st, 2014 AT 7:50 PM
Tiny
TWW1098
  • MEMBER
  • 5 POSTS
Thank You for all your help.
Was this
answer
helpful?
Yes
No
Tuesday, September 2nd, 2014 AT 4:06 AM

Please login or register to post a reply.

Related Cooling Fan Stays On Content

VIEW MORE

Sponsored links