1993 Honda Prelude trying to figure out the fan

Tiny
BORICUA_LOVE1981
  • MEMBER
  • 1993 HONDA PRELUDE
  • 4 CYL
  • FWD
  • MANUAL
  • 38,000 MILES
My fan, from the time I start my car, the fan will not cut off, whether im using the air or heater, or not, it is constantly running. When I shut the car off, it is still running. I have changed the relay switch but tthat has not resolved the issue. I just replaced the engine from an h-23 to a h-22, and the dealer sent me the wrong computer, they sent it for an automatic and my car is a manual. I have ran out of solutions, and am wondering could it be simply the computer issue? Or could it be a different problem? Please help
Friday, October 16th, 2009 AT 10:42 PM

9 Replies

Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Coolant fan on the radiator or HVAC blower fan inside the car?
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Saturday, October 17th, 2009 AT 6:53 AM
Tiny
BORICUA_LOVE1981
  • MEMBER
  • 5 POSTS
Its the coolant fan on the radiator, when I turn off the car completely the fan turns on and stays on
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Saturday, October 17th, 2009 AT 11:38 AM
Tiny
BMRFIXIT
  • MECHANIC
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Was the coolant fan switch checked or replaced ?


https://www.2carpros.com/forum/automotive_pictures/99387_ja_2.jpg



https://www.2carpros.com/forum/automotive_pictures/99387_ja1_2.jpg

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Saturday, October 17th, 2009 AT 12:39 PM
Tiny
BORICUA_LOVE1981
  • MEMBER
  • 5 POSTS
I dont even know where that switch is located at on my car, so no I dont think so
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Saturday, October 17th, 2009 AT 1:00 PM
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Let me look it up and let you know
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Saturday, October 17th, 2009 AT 1:01 PM
Tiny
BORICUA_LOVE1981
  • MEMBER
  • 5 POSTS
Yes it has been checked and changed about 2 weeks ago
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Saturday, October 17th, 2009 AT 1:01 PM
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
OK I seethe update that was replaced
what about codes did you check for codes
if not this is how you can do it
let me know if have any
trouble code # 6 is coolant sensor open

With ignition off, insert jumper wire in service check connector terminals, located near center console on Prelude.
Turn ignition switch to ON position.
Diagnostic Trouble Codes (DTCs) will be indicated by a series of long and short flashes on MIL. The number of long flashes indicates the number in the 10s column. The number of short flashes indicates the number in the 1s column. For example, 4 long flashes followed by 3 short flashes would indicate DTC 43.
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Saturday, October 17th, 2009 AT 1:11 PM
Tiny
BORICUA_LOVE1981
  • MEMBER
  • 5 POSTS
There is no check engine light warning signal or anything like that, is just it wont cut off, I have to unhook the battery terminals to get the fan to cut off, it seems there is nothing else wrong with it other than that. Is there another way to check something else that it could be?
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Saturday, October 17th, 2009 AT 2:01 PM
Tiny
BMRFIXIT
  • MECHANIC
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Have to check wiring harness if have a wire open and or shorted to ground between the sensor or coolant switch will cause the fan to stay on all the time or the coolant fan module is defective
I would suspect an open wire or plug is connected to a wrong sensor
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Saturday, October 17th, 2009 AT 2:07 PM

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