where is my coolant temp sensor??

ktmracer419 · 01-30-2006, 06:48 PM

well it's a 1998, and after thorough searching, everyone says it's on the drivers side of the engine almost all the way back there. but in my case i just have a flat spot there. if you don't beleive me i'll take a pic to prove it.

anyway, it's a 1998 engine so where is my temp sending unit?

thanks in advance

anony91xj · 01-30-2006, 06:54 PM

Guage probably operates off the sensor in the thermostat housing if there's not a sensor in the back of the cylinder head.

imograss · 01-30-2006, 08:00 PM

Mine was on the drivers side back corner ust behind the valve cover, with a purple wire plugged into it.

ktmracer419 · 01-30-2006, 08:43 PM

Quote:

Originally Posted by imograss

Mine was on the drivers side back corner ust behind the valve cover, with a purple wire plugged into it.

yeai already checked, flat spot.

anyway, the trick is it's a 1991 with the engine outta a 1998. could i just wire my guage to the sending unit on the t-stat housing ( the one that operates the electric fan)

would this be a reliable reading/work?

ktmracer419 · 01-31-2006, 07:25 AM

or how about taking the t-stat housing off and drilling and tapping a hole to accept the stock 1-wire sending unit

ktmracer419 · 02-01-2006, 08:11 AM

bump for other ideas?

JoBo · 02-01-2006, 12:37 PM

Depends on how much work you want to do. If it were me I would drill and tap the cylinder head on the flat spot where the older units had the sending unit for the guage. It's a standard pipe thread and iron is easy to tap. Of course you would want to flush your cooling systen afterwards to get out andy metal chips

01-30-2006, 06:54 PM	#2
anony91xj Registered User Join Date: Dec 2004 Location: North Jersey Posts: 2,742 Profile Gallery Classifieds My Jeeps	Guage probably operates off the sensor in the thermostat housing if there's not a sensor in the back of the cylinder head. __________________ 1997 VW Jetta - Daily Beater <---Totaled, seeking replacement DD 2004 GMC Envoy - Wife's Ride

02-01-2006, 12:37 PM	#7
JoBo Registered User Join Date: Jul 2004 Location: Columbus, Ohio, USA Posts: 1,431 Profile Gallery Classifieds My Jeeps	Depends on how much work you want to do. If it were me I would drill and tap the cylinder head on the flat spot where the older units had the sending unit for the guage. It's a standard pipe thread and iron is easy to tap. Of course you would want to flush your cooling systen afterwards to get out andy metal chips __________________ [B]JoBo[/B] Columbus, Ohio USA 2006 KJ CRD [COLOR="Blue"]Atlantic Blue Pearl Coat[/COLOR][COLOR="Black"] Limited[/COLOR] 2000 Cherokee Classic with factory 16" wheels

01-30-2006, 08:00 PM	#3
imograss Registered User Join Date: Feb 2005 Location: Nashville, Tennessee Posts: 34 Profile Gallery Classifieds My Jeeps	Mine was on the drivers side back corner ust behind the valve cover, with a purple wire plugged into it.