NAXJA Forums -::- North American XJ Association  

Go Back   NAXJA Forums -::- North American XJ Association > NAXJA Unibody Jeep Technical Forums > Jeep Cherokee XJ (1984 - 2001) > Modified Tech Discussion
HOME Member FAQ Sponsor Info Rules Bylaws E-Mail

Modified Tech Discussion Forum for Tech related discussion for Modified XJ's and MJ's.

Reply
 
Thread Tools Display Modes
  #1  
Old May 14th, 2008, 10:46
dbxtr3 dbxtr3 is offline
NAXJA Forum User
 
Join Date: Apr 2008
Location: Louisville, Ky.
Posts: 28
lower hose temp sensor adapter & sensor?

I am in the process of changing my 89 XJ cooing system from closed to open. I searched but could not find any defining answers

Where can I find a lower radiator hose temp sensor adapter? (the splice in kind)
Or do you know the size of the lower hose?

Do I use the stock sensor out of my old radiator or a new smaller sensor? If so what is the part #
Reply With Quote
  #2  
Old May 14th, 2008, 11:45
5-90's Avatar
5-90 5-90 is offline
NAXJA Forum User
 
Join Date: Mar 2003
Location: Hammerspace
Posts: 18,821
Re: lower hose temp sensor adapter & sensor?

I take it you're looking for a place to put the thermal fan switch?

Putting it in the lower hose makes about as much sense as AMC putting it in the "cold" tank - just because I like most of their ideas doesn't mean I like them all. You can usually find adapters like you're talking about at speed shops like Summit or Jeg's.

However, you may find it easier to get the 1991-up thermostat housing - it's got a port in it drilled and tapped 3/8"NPT. Then, select a switch (perhaps an adjustable one?) from a Chevrolet application and use that. Install in the thermostat housing.

Why do this? Because you then don't have to dink around with the lower hose when you chage it fairly regularly. You'll be able to use the same upper hose - the only real difference between 4.0L thermostat housings on either side of the 1990/1991 line is the 3/8"NPT port.

We like easy.
Reply With Quote
  #3  
Old May 14th, 2008, 11:49
techno1154's Avatar
techno1154 techno1154 is offline
NAXJA Member
 
Join Date: Apr 2003
Location: In the islands
Posts: 2,421
Re: lower hose temp sensor adapter & sensor?

Hose size is 2.5"

I made one from pipe and brazed in the switch fitting taken from a Renix era radiator. I use this (Renix era fan switch) to trigger my electric fans. It have run trouble free for years, extremely reliable and never need adjusting. I wish I did not have to cut the hose. I like the idea of the switch screwed into the radiator.
Go for it. You would not regret it.
__________________
Patrick

#594
1996 XJ; 4.0L; AW4; NP231; SYE; D30 and D44; ECTED; 4.10 gears; 30X9.5 -15 BFG/AT/KO; 3" lift; Rusty's LCA; JKS ADJ UCA; Kevins ADJ Track bar; Drawtite Front Receiver; Dual Electric Fans; Dual Battaries.
Reply With Quote
  #4  
Old May 14th, 2008, 12:17
5-90's Avatar
5-90 5-90 is offline
NAXJA Forum User
 
Join Date: Mar 2003
Location: Hammerspace
Posts: 18,821
Re: lower hose temp sensor adapter & sensor?

Quote:
Originally Posted by techno1154
Hose size is 2.5"

I made one from pipe and brazed in the switch fitting taken from a Renix era radiator. I use this (Renix era fan switch) to trigger my electric fans. It have run trouble free for years, extremely reliable and never need adjusting. I wish I did not have to cut the hose. I like the idea of the switch screwed into the radiator.
Go for it. You would not regret it.
It won't be screwed into the radiator - it will be in the thermostat housing. This will make the farkin' thing easier to reach for replacement...

I'll probably end up doing something similar - just for an unrelated reason (I happen to like the "closed" system - it doesn't give me any trouble.)
Reply With Quote
  #5  
Old May 14th, 2008, 12:40
fuzzydog fuzzydog is offline
NAXJA Forum User
 
Join Date: May 2005
Location: BC Canada
Posts: 316
Re: lower hose temp sensor adapter & sensor?

Quote:
Originally Posted by 5-90
I take it you're looking for a place to put the thermal fan switch?

Then, select a switch (perhaps an adjustable one?) from a Chevrolet application and use that.
5-90 - interesting tidbit of info - can you elaborate a bit? I have a taurus electric fan in my 90XJ and I bought a Hayden controller which worked well for about 4 months before it died. I never really did like the whole temp sensor in the rad fins either. I have picked up the 91 up XJ thermostat cover but haven't sourced an appropriate sensor switch yet. Any leads on what make/model of chev product to look at?
Reply With Quote
  #6  
Old May 14th, 2008, 12:56
outlander's Avatar
outlander outlander is offline
NAXJA Forum User
 
Join Date: Oct 2004
Location: Columbus,Ohio
Posts: 3,796
Re: lower hose temp sensor adapter & sensor?

83 corvette switch.....3/8 threads so it bolts into the 91+ thermo housing and turns the fan on at 210*
I'll be doing this soon.Costs about $20.
Reply With Quote
  #7  
Old May 14th, 2008, 13:04
fuzzydog fuzzydog is offline
NAXJA Forum User
 
Join Date: May 2005
Location: BC Canada
Posts: 316
Re: lower hose temp sensor adapter & sensor?



Thanks outlander. That temp seems about good for the XJ as well - I have the fan relayed in with a separate relay for high and low speeds. I'll wire the low speed into the temp switch and have a manual override for the high speed.
Reply With Quote
  #8  
Old May 14th, 2008, 14:00
5-90's Avatar
5-90 5-90 is offline
NAXJA Forum User
 
Join Date: Mar 2003
Location: Hammerspace
Posts: 18,821
Re: lower hose temp sensor adapter & sensor?

Quote:
Originally Posted by outlander
83 corvette switch.....3/8 threads so it bolts into the 91+ thermo housing and turns the fan on at 210*
I'll be doing this soon.Costs about $20.
Thank you - saved me the trouble of looking for it in a catalogue...!
Reply With Quote
  #9  
Old May 14th, 2008, 22:09
outlander's Avatar
outlander outlander is offline
NAXJA Forum User
 
Join Date: Oct 2004
Location: Columbus,Ohio
Posts: 3,796
Re: lower hose temp sensor adapter & sensor?

I'm here all week...... lol
Reply With Quote
  #10  
Old February 22nd, 2009, 20:55
bdiamond's Avatar
bdiamond bdiamond is offline
NAXJA Forum User
 
Join Date: Jan 2009
Location: Wichita Falls, TX
Posts: 440
Re: lower hose temp sensor adapter & sensor?

83 Corvette?
Reply With Quote
  #11  
Old February 22nd, 2009, 21:50
5-90's Avatar
5-90 5-90 is offline
NAXJA Forum User
 
Join Date: Mar 2003
Location: Hammerspace
Posts: 18,821
Re: lower hose temp sensor adapter & sensor?

Quote:
Originally Posted by bdiamond View Post
83 Corvette?
Told ya - Chevvy part!

Of course, most of the aftermarket adjustable fan controllers (Hayden, Flowkooler, et al) also use sensors threaded 3/8" NPT, IIRC. That's what makes it so nice.

Semi-related question - if Henry Ford brought interchangeable parts to the automotive world, why does Ford have so damned many supercessions and such in their catalogues? Ford part numbers only seem to be valid for about a week at a time, and there are so damned many variations that I just don't work on the wretched things anymore...
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Outside Air Temp Sensor XJ AV8R OEM Tech Discussion 5 October 29th, 2007 12:59
Temp sensor rich_1833 Modified Tech Discussion 2 May 7th, 2007 21:51
Temp Sensor play_in_the_mud OEM Tech Discussion 13 May 26th, 2006 12:10
97 temp sensor in a 89 Oizarod115 OEM Tech Discussion 2 February 17th, 2006 06:03
Temp. Sensor 92 4.0 vs 96 LandCruizzer OEM Tech Discussion 5 June 5th, 2005 11:26


All times are GMT -7. The time now is 13:02.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
NAXJA and NAXJA logo's Copyright NAXJA. All content/images Copyright NAXJA 1999-2014