Drilling a hole into thermostat housing
#1
Member
Thread Starter
Join Date: Nov 2011
Location: NY
Posts: 220
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1996
Model: Cherokee
Engine: 4.0 I6
Drilling a hole into thermostat housing
I have a 96 jeep Cherokee sport that the PO swapped a 97+ motor into. I THINK it's a 99.
Because of this my thermostat gauge doesn't work. I've made this thread before but I need a thermostat gauge, I was going to buy a scan gauge tool but I was thinking I can I just run a secondary aftermarket gauge by wiring tapping into something else. Is it possible for me to drill into the therm housing and putting the aftermarket sensor in there? Would it work? What size bit would I need?
Because of this my thermostat gauge doesn't work. I've made this thread before but I need a thermostat gauge, I was going to buy a scan gauge tool but I was thinking I can I just run a secondary aftermarket gauge by wiring tapping into something else. Is it possible for me to drill into the therm housing and putting the aftermarket sensor in there? Would it work? What size bit would I need?
#2
Member
Thread Starter
Join Date: Nov 2011
Location: NY
Posts: 220
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1996
Model: Cherokee
Engine: 4.0 I6
Bump.
What if I splice in a longer wire from my dash gauge and drill a bung for that sensor in the t-stat housing?
It's starting to make me uncomfortable not knowing my temp when I have a slight coolant leak
What if I splice in a longer wire from my dash gauge and drill a bung for that sensor in the t-stat housing?
It's starting to make me uncomfortable not knowing my temp when I have a slight coolant leak
#3
CF Veteran
Join Date: Oct 2009
Location: somewhere Gee oh Dee cant find me...
Posts: 4,529
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1995
Model: Cherokee
Engine: I6 4.0L
the temp sensor for the gauge is on top of the cylinder head way in the back on driver side. make sure its plugged in before you go drillin holes
#4
Member
Thread Starter
Join Date: Nov 2011
Location: NY
Posts: 220
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1996
Model: Cherokee
Engine: 4.0 I6
Maybe if you read my first post you'd understand what i'm saying.
In 97+ they changed the sensors into 1. There is nothing for me to plug that plug into.
In 97+ they changed the sensors into 1. There is nothing for me to plug that plug into.
#6
CF Veteran
Join Date: Sep 2010
Location: Salt Lake City, UT
Posts: 4,968
Likes: 0
Received 0 Likes
on
0 Posts
Year: 2000
Model: Cherokee
Engine: 4.0L
I would not put it infront of the t/stat as thats measuring coolant temp on the cold side (radiator side) of the system... where as with the factory setup it measures the hot side (engine side) of the system. But on the newer ones its only monitered on the cold side of the t/stat, so it should work... It just may not show full temp as it exits the head/block....
#7
CF Veteran
Join Date: Oct 2008
Location: Hell, CA
Posts: 2,127
Likes: 0
Received 2 Likes
on
2 Posts
Year: 1989
Model: Cherokee
Engine: 4.0L I6
Get one of the 97+ t-stat housings, has a threaded hole already, get a temp send that will work and splice into the existing temp sensor wire and extend it,
Trending Topics
#9
CF Veteran
Won't the thermostat housing with the factory hole from another year XJ bolt into the same place on all years of the 4.0L?
Edit: I guess what he said:
The base and mounting bolt look the same, though I've never actually seen it done. I would think it would work the same.
Edit: I guess what he said:
The base and mounting bolt look the same, though I've never actually seen it done. I would think it would work the same.
Last edited by alpine.adrenaline; 02-28-2012 at 08:16 AM.
#10
CF Veteran
Join Date: Sep 2010
Location: Salt Lake City, UT
Posts: 4,968
Likes: 0
Received 0 Likes
on
0 Posts
Year: 2000
Model: Cherokee
Engine: 4.0L
It should bolt up with no problems... I know my 2000 t/stat housing fits my 91 cyl head... its a 7120 HO, I would assume all HO would interchange, but Don't know about renix...
#12
Member
Thread Starter
Join Date: Nov 2011
Location: NY
Posts: 220
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1996
Model: Cherokee
Engine: 4.0 I6
Let me explain this one more time. 96 and down engines had 2 different sensors for measuring coolant. One that gets sent to the ecu and one that gets sent to the dash. In 97+ they changed that into 1 sensor. The previous owner didn't didn't anything to the harness to accommodate this so I have one plug off my harness that has NOTHING to plug into (temp gauge)
I DO have a threaded hole with a coolant temp sensor for the ecu on the front of the t-stat housing. You telling me to get another housing won't make a difference.
This photo is of my t-stat housing. I have a sensor there for the ecu
This is the wire off my harness that leads to the temp gauge there is nothing for me to plug this into.
Can I extend this wire and drill a hole into the housing to accommodate both sensors?
To the last poster what did you do exactly?
I DO have a threaded hole with a coolant temp sensor for the ecu on the front of the t-stat housing. You telling me to get another housing won't make a difference.
This photo is of my t-stat housing. I have a sensor there for the ecu
This is the wire off my harness that leads to the temp gauge there is nothing for me to plug this into.
Can I extend this wire and drill a hole into the housing to accommodate both sensors?
To the last poster what did you do exactly?