It is currently Thu Mar 28, 2024 9:32 am

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 36 posts ]  Go to page 1, 2  Next
Author Message
 Post subject: Thermostat Remove and Replace
PostPosted: Sun Jan 08, 2012 2:24 pm 
Offline
LOST Junkie
User avatar

Joined: Mon Oct 20, 2008 12:24 pm
Posts: 977
Location: Victoria, Canada
Jeep Liberty CRD, Thermostat Remove and Replace

Image

The thermostat should regulate the coolant temperature to 80C (176F). It is normal for temperatures to exceed this and go beyond center scale for hot weather driving, hills and towing.
Note that the indicated 89C (192F) mark is for the modified thermostat if you have one.

Image

The engine should be cold for this procedure.
Turn the cabin heat on to full (engine not running).
Disconnect the battery.
Attach a 5/16 inch hose to the radiator drain cock. It is on the inside, passenger side, lower corner.
Feed the hose into a clean bucket; we will save the coolant.

Image

The drain cock is plastic and easily damaged. The best way to crack it open is with a 10mm Allen wrench in its hollow head. There is little clearance so I sacrificed 2 cms off of the handle of a Allen wrench and used a open/box.
Drain the coolant out of the expansion tank and then open the expansion tank cap.
There is no need to drain out all of the coolant. Feel the coolant drain from upper radiator hose and then wait a little longer. Close the drain cock and remove the hose.

Image

To get better access to the thermostat, we need to remove the engine air filter box.
Pull up the red tab, squeeze the black section and remove the plug to the Maf sensor.
Squeeze the plug to the inlet pressure sensor (you can see the catch tab lift at the front) and pull off.
Loosen the hose clamp to the air intake and unclip the lid to the airbox.
Remove lid and air filter element.

Image

Remove the intake duct from the airbox. You may need to spin it 90°.

Image

Get your hand under the air box and pop out the bottommost tab. Pop out the other 2 and remove air box.

Image

Remove the engine cover.
Disconnect the cac inlet hose at the intercooler (8mm socket).
Disconnect the upper radiator hose from the thermostat.

Image

Squeeze the black tab and pop off the electrical connection to the coolant temperature sensor at the back of the thermostat.
Remove the sensor with a 19mm deep socket.
Loosen the hose clamps and disconnect the two bypass hoses on the side of the thermostat housing. Completely remove the shorter hose to the viscous heater (left side, viewed from the front).
Also disconnect the hose on the right side of the viscous heater .
Remove the lower hose on the thermostat.
Remove the bracket at the top of the thermostat (10mm bolt and 8mm Allen).

Image

Remove 3 10mm bolts securing the thermostat to the block. All 3 can be reached with a 2.5 inch socket extention on a 6 inch wobble end socket extention.
Remove the thermostat, scrape the gasket material off of the engine block and clean with acetone.

Image

Lightly coat the new gasket (part #05066806AA, $2-$3) with high temperature grease (silicone or white lithium) to keep it from sticking again.
Bolt the thermostat housing to the engine block and torque the bolts to 20 ft-lbs (the longer of the 2 short bolts is used here). Replace the bracket and torque the bolt on top to 20 ft-lbs and the 8mm Allen bolt (to the viscous heater) to 25 ft-lbs.
This is the modified thermostat. The actual new thermostat part number is 05142601AA.

Reverse the remaining steps to complete the replacement.
Use a little grease (silcone or white lithium) on the hose fittings to aid in removing the hoses the next time.
Torque the coolant temperature sensor to 14 ft-lbs.

Follow the recommendations in the service manual to refill the coolant.


Last edited by Squeeto on Thu May 16, 2019 11:41 am, edited 2 times in total.

Top
 Profile  
 
 Post subject: Re: Thermostat Remove and Replace
PostPosted: Sun Jan 08, 2012 2:44 pm 
Offline
Lifetime Member
Lifetime Member

Joined: Sun Mar 28, 2010 9:15 am
Posts: 5431
Location: Tallahassee, Florida
Excellent writeup. I've only 2 comments:
1. on removal of the 3 tstat bolts to the block Squeeto recommends using a wobble extension. I second and third that motion as a regular 3/8ths extension binds on that "hump" in the manifold below the lower back bolt making removal difficult and reinstall without cross threading even more difficult. If you don't have a wobble extension buy one or you can try a 1/4" extension and socket which may clear.
2. when I did mine I found the temp sensor wiring clip was upsidedown (e.g. the sensor was screwed in so the release clip was on the bottom) so I had to pull the tstat before I could get to the release clip. I did take care not the repeat that problem on the reinstall.

_________________
Sold to LOST member my 05 Ltd, GDE Stg II turbo + TCM tune, SunCoast TC w. Transgo kit, Steiger window regulators, Samcos, Fumoto valve, 2nd gen filter head with Lub. Spec. bleeder, Hayden clutch & 11 blade fan, inverted spare, P-1 battery, BF Goodrich Long Trail TAs, Etecno1 glow plugs, timing belt at 50K miles/8 yrs


Top
 Profile  
 
 Post subject: Re: Thermostat Remove and Replace
PostPosted: Tue Feb 21, 2012 7:40 pm 
Offline
LOST Newbie

Joined: Sun Aug 29, 2010 1:44 pm
Posts: 48
Location: Jamestown, Ca.
Great report! I will be doing my timing belt and thermostat replacement soon and noticed your modified thermostat with what appears to be a typical thermostat neck adapted to house a regular thermostat. Is that something you did yourself or is someone out there modifying them?

_________________
'05 CRD: GDE Full Torque ECO Tune, 245/70-R17 General Grabber AT2 on stock rims, Surco Safari Rack, Hayden 2905 Heavy Duty Fan Clutch, OME 926/947 Springs/Shocks/Struts, Dynomax Exhaust, Hot Diesel Solutions Model 001 Thermostat


Top
 Profile  
 
 Post subject: Re: Thermostat Remove and Replace
PostPosted: Wed Feb 22, 2012 12:35 am 
Offline
LOST Junkie
User avatar

Joined: Mon Oct 20, 2008 12:24 pm
Posts: 977
Location: Victoria, Canada
remwines wrote:
Great report! I will be doing my timing belt and thermostat replacement soon and noticed your modified thermostat with what appears to be a typical thermostat neck adapted to house a regular thermostat. Is that something you did yourself or is someone out there modifying them?


viewtopic.php?f=5&t=50940


Top
 Profile  
 
 Post subject: Re: Thermostat Remove and Replace
PostPosted: Wed Feb 22, 2012 4:21 pm 
Offline
LOST Newbie

Joined: Sun Aug 29, 2010 1:44 pm
Posts: 48
Location: Jamestown, Ca.
Yeah, I found that topic after I made the last post. I will be looking forward to him getting back into production after he settles in and gets set up. I didn't study all of his pictures and processes, but I have all the equipment to do what he has done. I would rather pay him for doing all of the R&D and labor, and not have to re-invent the thing. Looks like he did some nice work. For now I will just buy the replacement Crown thermostat. That way I will have a core to send him.

_________________
'05 CRD: GDE Full Torque ECO Tune, 245/70-R17 General Grabber AT2 on stock rims, Surco Safari Rack, Hayden 2905 Heavy Duty Fan Clutch, OME 926/947 Springs/Shocks/Struts, Dynomax Exhaust, Hot Diesel Solutions Model 001 Thermostat


Top
 Profile  
 
 Post subject: Re: Thermostat Remove and Replace
PostPosted: Thu Mar 08, 2012 3:06 am 
Offline
LOST Member

Joined: Thu Jun 03, 2010 2:43 am
Posts: 233
Location: Marina Del Rey, CA
It's detailed posts like these which make this community so great. Without them, owning these little little beasties would be...well...I wouldn't own one...never would have bought one, in fact.

Bravo!

_________________
2006 CRD w/99,300 miles
F31 from a previous life
EHM @ 42K, ProVent @ 79K
GDE Eco Tune & TCM @ 46K
Engine mounts replaced @ 55k/93k, Timing Belt @ 90k
Lift Pump @ 97k
OME Lift, 1.5''
Kenwood TM-V71 Ham Radio / Cobra C75WX CB
Surf Racks
Image


Top
 Profile  
 
 Post subject: Re: Thermostat Remove and Replace
PostPosted: Thu Aug 15, 2013 8:23 am 
Offline
LOST Member
User avatar

Joined: Sun Mar 16, 2008 4:24 am
Posts: 457
Location: Geneva - Switzerland
old thread but really usefull.
I have a brand new Crowns thermostat in its housing and 2 coolant hoses in my garage.
I will replace them during my soon to come 2 weeks break.

Thanks again for posting such write-up !!

_________________
Silver CRD
ASFIR skid front & central elements, MOPAR gas tank skid - SAMCO Turbo hoses - 4 breathers extension
2006 gaser airbox - Frankenlift with Koni at front.
Airtex lift pump


Top
 Profile  
 
 Post subject: Re: Thermostat Remove and Replace
PostPosted: Fri Jan 24, 2014 10:31 pm 
Offline
LOST Newbie

Joined: Sat Jun 29, 2013 4:04 pm
Posts: 65
Location: Champaign, IL
Just replaced the Thermostat(in wife's Jeep) because the fix with the Stant 13519 didn't work on this Jeep. It has been working just fine with my other Jeep (the one that I drive) for over a year even in the extreme weather that we are having in the Midwest, sub zero temps. I will be testing it tomorrow. I also put it some tee's for the future of using WVO and Bio-diesel during the winter. I use Bio-diesel during the summer. I have a good source for Bio-diesel so I would like to use it during the winter also.

_________________
2005 CRD Green orm,ehm,oem skids, painted wheels
2005 CRD Blue orm,ehm
F250 SD forsale (SOLD)


Top
 Profile  
 
 Post subject: Re: Thermostat Remove and Replace
PostPosted: Sat Jan 25, 2014 2:48 am 
Offline
LOST Member
User avatar

Joined: Sat May 04, 2013 8:11 am
Posts: 256
Location: Villach
Hi,

very nice write-up, this is how i fixed it: http://www.jeep4fun.at/jeepforum/viewto ... =6&t=34707

works still fine... :wink:

bye,
samse

_________________
WJ 4,7 HO Overland 2002
KJ 2,8 CRD Red River 2003


Top
 Profile  
 
 Post subject: Re: Thermostat Remove and Replace
PostPosted: Tue Jan 28, 2014 8:18 pm 
Offline
LOST Newbie

Joined: Sat Jun 29, 2013 4:04 pm
Posts: 65
Location: Champaign, IL
thanks for the write up. I used it to replace my thermostat Sunday January 26, 2014.

_________________
2005 CRD Green orm,ehm,oem skids, painted wheels
2005 CRD Blue orm,ehm
F250 SD forsale (SOLD)


Top
 Profile  
 
 Post subject: Re: Thermostat Remove and Replace
PostPosted: Thu May 29, 2014 7:14 am 
Offline
LOST Newbie

Joined: Fri Oct 21, 2005 9:04 am
Posts: 5
Location: Arlington, VA
Thanks as well. My temp is right at the mid-way point now. Like all repair jobs, I was on track for a quick finish but dropped the gasket "somewhere" while sliding the replacement T-stat in place. Took over an hour to find! This is why I usually take it to a pro!


Top
 Profile  
 
 Post subject: Re: Thermostat Remove and Replace
PostPosted: Tue Feb 24, 2015 5:19 pm 
Offline
LOST Newbie

Joined: Fri Feb 20, 2015 2:46 pm
Posts: 2
Brilliant guide! Thanks very much. Replaced my thermostat today with a Crown replacement unit and my needle's now sitting exactly where it is in your guide!! :D :D

Cheers,
Mike.


Top
 Profile  
 
 Post subject: Re: Thermostat Remove and Replace
PostPosted: Sun Mar 22, 2015 7:19 pm 
Offline
LOST Member

Joined: Wed Nov 08, 2006 11:32 pm
Posts: 344
Location: saint diego, ca
Great guide, thanks. FYI if you are in a pinch the drain cock can be opened with a 17 mm wrench. Just recommend you are gentle.

_________________
2005 Liberty CRD, 245/75R16, OME CRD Springs front, OME HD rear


Top
 Profile  
 
 Post subject: Re: Thermostat Remove and Replace
PostPosted: Tue Nov 01, 2016 4:38 pm 
Offline
LOST Newbie

Joined: Thu Mar 15, 2012 11:11 pm
Posts: 70
I know this is an older thread but I use a search button was wondering if this inline thermostat that was posted in the German site worthwhile looking into or should I spend three times the price and get the housing?


Top
 Profile  
 
 Post subject: Re: Thermostat Remove and Replace
PostPosted: Wed Nov 02, 2016 12:40 pm 
Offline
LOST Newbie

Joined: Sun Sep 04, 2016 12:37 pm
Posts: 52
Location: Wisconsin
get the housing. There has been some discussion on inline tstats, and ppl wondering if it does more harm than good.

_________________
I can do a job quick, good, or cheap, pick ONE. :)


2005 Jeep Liberty CRD


Top
 Profile  
 
 Post subject: Re: Thermostat Remove and Replace
PostPosted: Wed Nov 02, 2016 1:32 pm 
Offline
Moderator
Moderator
User avatar

Joined: Sat Aug 24, 2013 11:36 pm
Posts: 7157
Location: Central GA
4wheeldeal wrote:
I know this is an older thread but I use a search button was wondering if this inline thermostat that was posted in the German site worthwhile looking into or should I spend three times the price and get the housing?

Get the OEM thermostat; the jury is still out on the in-line thermostat, some are of the opinion that an in-line thermostat can cause a head gasket leak and / or a cracked head...
Without definitive proof either way at this point, an in-line unit is just really not worth the possible risks and consequences IMHO!!! :roll:

_________________
Supporting Vendor and Moderator of LOST
05 Jeep Liberty CRD Limited :JEEPIN:
Ironman Springs/Bilstein/Shocks
Yeti StgIV Hot Tune
Week's BatteryTray
No FCV/EGR
Samcos/ProVent
SunCoast/Transgo
Carter Intank-pmp
2mic.Sec.Fuel Filter
Flowmaster/NO CAT
V6Airbox/noVH
GM11 Bld.fan/HDClutch
IronrockArms/wwdieselMount

98 Dodge Cummins 24 Valve


Top
 Profile  
 
 Post subject: Re: Thermostat Remove and Replace
PostPosted: Tue Nov 08, 2016 1:59 am 
Offline
LOST Addict

Joined: Sat Apr 17, 2010 3:29 pm
Posts: 1167
Great write-up and great photos. :)


Top
 Profile  
 
 Post subject: Re: Thermostat Remove and Replace
PostPosted: Sat Jan 14, 2017 11:01 am 
Offline
LOST Junkie

Joined: Sat Jun 01, 2013 12:39 pm
Posts: 626
Location: North east-central Illinois
I have an electric fan kit to install. Should I do both at the same time?

I also have a webasto heater to install. Should I postpone the thermostat and / or electric fan until I am ready to install the Webasto?

_________________
2006 Jeep Liberty CRD 142,000 miles New engine 2-2014, Green Eco tune, FS2500 bypass filter Weeks elbow, European Torque converter, brakes front UCA's wheel bearing and front hubs. Front hitch OEM lift pump
98 K2500 Suburban 6.5td
96 K1500 " 6.5td
95 2 door Tahoe 6.5td
94 K3500 cc srw 5 speed 6.5td
91 International Model 6 speed spicer 4700


Top
 Profile  
 
 Post subject: Re: Thermostat Remove and Replace
PostPosted: Sat Jan 14, 2017 5:43 pm 
Offline
LOST Addict

Joined: Sat Apr 17, 2010 3:29 pm
Posts: 1167
jrsavoie wrote:
I have an electric fan kit to install. Should I do both at the same time?

I also have a webasto heater to install. Should I postpone the thermostat and / or electric fan until I am ready to install the Webasto?



I would install both the electric fan kit and the Webasto at the same time as the thermostat. At the very least, install the heater and coolant lines for the Webasto; you can wire up and do the fuel lines later, unless you are dropping the fuel tank at the same time to install a lift pump.

Try to do as little overall labour as possible, Jeffrey.... You more than anyone I am aware of knows what a P.I.T.A. a Liberty CRD can be.

Still love mine, though! :mrgreen:

Best regards,


Top
 Profile  
 
 Post subject: Re: Thermostat Remove and Replace
PostPosted: Mon Jan 16, 2017 1:41 pm 
Offline
LOST Addict
User avatar

Joined: Tue Jun 04, 2013 1:21 pm
Posts: 2137
Location: Utah
jrsavoie wrote:
I have an electric fan kit to install. Should I do both at the same time?

I also have a webasto heater to install. Should I postpone the thermostat and / or electric fan until I am ready to install the Webasto?


I wired my fan into the existing A/C fan harness. I ended up buying a 2 speed fan like the stock unit and was able to control the high and low speeds straight from the ECU. We have the ability to adjust the fan activation based on coolant temps straight from the ECU and tuning. It allows you to bypass the whole 3rd party fan controller annoyance. I simply bought some GM weather proof harnesses from Carquest and cut the plug off the stock A/C fan and re-wired it onto the new fan.

_________________
2006 CRD - GTB2056 turbo by Dieselguy86, Eco Trans Tune, Lift Pump, Week's, HDS Tstat, Racor Filter, ARP's, OME 790's+Top Plate, JBA 2.5", JBA UCA, Moab's+265/75R16, ARB Bull Bar, 4.10's, TrueTracs


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 36 posts ]  Go to page 1, 2  Next

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 4 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group. Color scheme by ColorizeIt!
Logo by pixeldecals.com