'05 fairly stock up until two weeks ago.
-installed Sasquatch stage 1 and 2 EGR delete
-Loaded YETI 1.02 ECU tune for EGR delete
-Installed Crown thermostat
-bypassed Viscous heater by running heater hose direct to thermostat outlet and removed relay

History: Temperature was running on 1/4 mark during cool weather for the last year. I was doing the EGR delete so changed the thermo. Now the jeep won't get to 1/4 unless under heavy load and then drop back to barely warm under normal driving in 20f temps. I re-used the coolant drained so no bad coolant mixture (gelling). No loss of coolant except for what was in the removed components.

Anyone else experienced this with the viscous heater bypass? I'm thinking I have either a bad thermo or the coolant is moving too fast through the system that it never gets hot?? Could it be a trapped air pocket? I've tried to purge it per the service manual but it indicates it's pretty much self-purging.

And yes, I've searched the forum but haven't seen anything relevant. THANKS in advance for any input.

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2005 Sport CRD 130k
Yeti's Stage II DIY Hot Tune
Weeks stage 1&2 EGR Delete
Florida HD billet TC [500+flbs torque]
DIY T'stat Mod {Kap's design}
'03 Ram TCM

Definitely sounds like the Crown stat is garbage. I've never seen a factory stat run that cold unless it was stuck open, and the fact that you can get the needle to move under high load should indicate that the temp sender is good. I'd get an HDS Model 001 if I was you and never have to waste another $100 on this problem, but I like permanent solutions.

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05 CRD: H.D.S2 stat,WW Ironrock trilink&LCA's, OX rear,ARB front, 4.10's, ARB bumper, Suncoast,OME 3.5, JBA UCA,rock rails, Moabs&265/75 Duratracs, GDE tunes ,FFD fan,ARP's, 2 micron fuel, new valves,sasquatch battery tray & grid heater, tensioner relocated
Mech fan, VH & AC delete

I would agree with Mountainman that the Crown tstat is probably bad, idparts quit carrying them due to problems. As a very temporary check, I would not advise doing this long term, you could try an inline thermostat; if that bumps the operating temp up ditch the Crown. However, I can tell you that with a failed open or opening early OEM tstat I could get to normal operating temp under load; like running AC.

Not sure why you rerouted viscous heater hose; with the relay unplugged the viscous heater clutch doesn't engage so the viscous heater does not run. I'd wonder though if the viscous heater bearing might over heat with no coolant flow.

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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

I tend to agree that a faulty Crown is the probable root cause. If you've got access to an IR thermometer you can confirm that the housing temperature is close to what your gauge is telling you but I'm certain they will align.

Hold on to that old housing because if this project gets off the ground it promises all the benefits of the HDS housing at a fraction of the cost viewtopic.php?f=5&t=83945&start=0

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Share your ideas freely at https://www.facebook.com/groups/libertydiesels/

Yeah, what I expected to hear.Thanks for the replies. I am going the DIY approach with my old housing.

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2005 Sport CRD 130k
Yeti's Stage II DIY Hot Tune
Weeks stage 1&2 EGR Delete
Florida HD billet TC [500+flbs torque]
DIY T'stat Mod {Kap's design}
'03 Ram TCM

It sucks to see somebody waste money on a Crown Tstat. That brand is truly junk.

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2020 Ram 1500 CC Ecodiesel Limited
1995 Dodge Ram 2500 4x4, 5.9 Cummins, 47RH, Reg Cab
2005 Liberty CRD,fixed the rockers and a couple more things,GDE Hot tune,Weeks Stage 1 and 2 EGR delete,Hot Diesel solutions Tstat assembly(wonderful heat!), ARP studs, OME 1.5" lift.....thanks Seth! (Sold)
2006 Liberty CRD....The Moose Hit

What you need is one of these...



This is simply the best solution for the issue of cold running Liberty CRDs... nothing else available today comes close.

Price??? Tell him.

I can't tell him the price unless I know which country he resides in... Canada or the U.S.

I can tell him that olypopper, Mountainman and papaindigo are all customers of mine. They CAN tell him whether or not the Model 001 - image shown above - is worth the money. I have sold over 100 Model 001 thermostat assemblies, and I have yet to have 1 customer unsatisfied with the product or disappointed with the money he or she spent.

It has been settled long ago that the O.E. thermostat for the Liberty CRD is of poor quality, and has the wrong temperature thermostat valve inside. The O.E. thermostat opening temperature was compromised in another idiotic attempt at pollution control, and the quality of the Crown copy of the O.E. thermostat is even worse.

wilco549 has already wasted about $100.00 and his own time on trying to get the cold running engine issue resolved. I am merely trying to respect his time and his hard-earned money by providing a part that will never let him down in the future.

Yes, the Hot Diesel Solutions Model 001 is expensive... quality parts ALWAYS are. The question remains if wilco549 wants to waste more of his time and money on this issue, or does he want it resolved once and for all.

And welcome to another thread that is headed for hijacking by TurboDieselFreak.

The forum has become a vendors heaven and a chore for us members.

Isn't it enough to have ads plastered all over the screen and now our threads too.

I find it a chore to come here and read about this on every other thread.

Moderators can something be done about it, isn't there a rule for Bots?

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2006 Liberty Limited CRD, Deep Beryl Green, Yeti tune, Arp studs, new cams, rockers, lifters, TB. "Green Monster"
2005 Liberty Sport CRD, Deep Beryl Green, GDE Hot Tune, ARP studs. "Rocket"
1982 Fiat 124 Spider Convertible. "Fiona"

Jeff's t-stat looks very nice and well made but not for me. I just can't justify a 500 t-stat when I have the means to modify my old one ala Kap's design.

Yeah, I've already bought/installed the crown thinking it would buy me a little time until my original mod is complete....that didn't work out too well. Looks like the crown is indeed junk.

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2005 Sport CRD 130k
Yeti's Stage II DIY Hot Tune
Weeks stage 1&2 EGR Delete
Florida HD billet TC [500+flbs torque]
DIY T'stat Mod {Kap's design}
'03 Ram TCM

This is a tough one because, as an official vendor, he is contributing to the cost of running this site. I don't have a problem with a quick plug but he does seem reluctant to offer a price up front, even in his own thread in the vendors forum it's hard to nail down how much its gonna cost but at such a hefty premium I guess he knows he needs to sell you on it before revealing the price. I do notice that every time someone challenges his product he goes into a 1000 word essay about how his product is the only solution.

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Share your ideas freely at https://www.facebook.com/groups/libertydiesels/

Don't we have in our rules that vendors cannot name prices except in the vendor thread?

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http://www.Colorado4Wheel.com
"Its not about what you can DO with your Jeep, its about where you can GO with your Jeep."
Knowledgeable - But Caustic

We need a rule about Hijacking threads by vendors to benefit their cause with a litany of posts.

Let's keep this site simple, vendors lay off the keyboard when you visit the site, if you don't have anything positive to add to the thread besides information about your product.

If this scenario is allowed to go on, then what is preventing all the rest from doing the same.

Inundation comes to mind.

Set the rules, enough is enough.

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2006 Liberty Limited CRD, Deep Beryl Green, Yeti tune, Arp studs, new cams, rockers, lifters, TB. "Green Monster"
2005 Liberty Sport CRD, Deep Beryl Green, GDE Hot Tune, ARP studs. "Rocket"
1982 Fiat 124 Spider Convertible. "Fiona"

No, what we NEED is a rule to keep people like dirtmover from dispensing B.S. advice.

Dirtmover and others are slagging my product because the price is not low enough in their estimation... they literally want me to sell it for less than the cost it takes me to manufacture it. Yet what I find amazing is these same people have no problems shelling out $225.00 USD for an intake elbow kit of O.K. quality that costs less than $70.00 USD to manufacture and package.

There has clearly been people on this forum who have been the cause of some of the problems of the CRD engine, and I am only pointing that out. It is clear to me, and anyone else who has actually taken the time to properly investigate the cooling system issues with the CRD, that the inline thermostat "solution" is a major headache and expense waiting to happen....

viewtopic.php?f=5&t=84028&start=0

My product was designed in consultation with actual engineers; one of them who works for Stant Corporation, so he has relevant knowledge of cooling system design. I did not have a sudden epiphany while under the hood of my CRD and drinking beer... this is the reason why the inline thermostat solution was born in the first place, and the results speak for themselves.

My product is professionally designed and manufactured, something that you can not say about the other CRD cooling system solutions being bantered about in the forums. I did this because I wanted the CRD owners to have a high quality product that permanently rectifies the problem. There is a high cost for this and CRD owners have to pay for it.

I guess what angers me the most is that I started in this project close to three years ago on the encouragement from members of this very forum, and because there were no other viable solutions available. I started with absolutely no funding available, and due to development costs and equipment purchases I have not even been able to afford website, so this forum is basically all the advertising I have.

Now you want to shut me down as well, by not allowing me to defend my product. Dirtmover and other can simply spout out all the B.S. they want and I can not do anything about it; am I getting this correct, racertracer?

Sigh . Can we all stop poking sticks in the anthill please. I think we all basically agree that the OEM sealed housing tstat is a stupid, from the customer perspective, design likely brought about by bean counters who thought shaving the cost of 3 studs/nuts and one gasket off the vehicle cost was a smart move never mind it makes a $10-15 tstat replacement a $100+ effort.

Beyond that there are several approaches to dealing with a failed OEM tstat and all of those options have associated "costs" ($s, effort, potential risk, whatever). If you don't like the "cost" of an option then don't use it but recognize others may make a different decision.

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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

I'm not going to spend significant time responding to this drivel but your assumptions and inferences are wrong. Suffice to say that anyone who wants to see what I've really said about the cost of your thermostat can click on my profile and then search users posts. My aftermarket upgrades are all listed in my sig.

_________________
Share your ideas freely at https://www.facebook.com/groups/libertydiesels/

Turbo .. there's no reasoning with you, your money driven.

It's a waste of time.

Disappointed to see this site regress this way.

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2006 Liberty Limited CRD, Deep Beryl Green, Yeti tune, Arp studs, new cams, rockers, lifters, TB. "Green Monster"
2005 Liberty Sport CRD, Deep Beryl Green, GDE Hot Tune, ARP studs. "Rocket"
1982 Fiat 124 Spider Convertible. "Fiona"

Hmmmm. is there a way on this forum to prevent certain "tagged" members posts from showing? I belong to other groups where that's an option.

I don't mind an occasional "hey, I have this available" mention by any member, but turbo does take it way too far. I knew the TD units were available but decided to go another route. NO thermo is worth 500+ to me.

Progress today: my housing and machined components are done. Just waiting on the ts, hose and water outlet to arrive.

_________________
2005 Sport CRD 130k
Yeti's Stage II DIY Hot Tune
Weeks stage 1&2 EGR Delete
Florida HD billet TC [500+flbs torque]
DIY T'stat Mod {Kap's design}
'03 Ram TCM

I never said YOU were the one purchasing an aftermarket intake elbow, dirtmover; merely that some others of your ilk have.

You say I spout drivel and make assumptions and inferences... and yet it is you who have cast aspersions on my product without taking the time to actually investigate into what I have done here. You talk like you are an expert on manufacturing, but in fact you and racertracer are both armchair quarterbacks. Have either of you designed and brought to market an automotive part? Somehow I doubt that.

Both of you expressed interest in the Model 001 when I first started out. When the real costs started to become apparent you both got really ignorant about the whole deal.

So I grossly underestimated the costs... S-O-R-R-Y!! I have never done anything like this before, and I wanted to bring a quality part to CRD owners. Would you have preferred that I cut corners to bring the cost down? How would you two manufacture a proper replacement for the O.E. CRD thermostat? Inquiring minds want to know.