Heat issue (search yielded no results)

travis819 · **Joined:** Wed Jan 06, 2016 11:37 am **Posts:** 29

Hey guys, first post here...so be gentle as I'm still fairly new to the CRD scene.

I'm having an issue with my heat...here in NJ it just started getting below freezing a few days ago, so I started using my block heater which has helped cure my hard start issue until my new fuel/water separator gets here...but the last 2 days my temp hasn't gone up at all in my 25 minute drive to work with minimal stop and go. This has never happened before. The heat works OK when the temp is above 25 F, but below that the engine doesn't heat up at all and at best I get luke warm air on acceleration. I'm not sure if it'd be the water pump or not...I'm kind of torn because the heat works and the temp gauge goes about 1/4 of the way up above freezing temps, so I don't know if stuff is getting frozen? I also have gotten the red lightning bolt at first start up in the morning both days, but it doesn't come on at all the rest of the day. No degradation in performance, just a really cold ride to work.

Thanks in advance for all your thoughts!!

flash7210 · **Posted:** Wed Jan 06, 2016 12:23 pm

Diesel engines take longer to get warmed up.
The belt driven viscous heater is supposed to help things get warmed up quicker. Is yours disabled?
Unless your heater core is plugged up or the blend air door is not functioning, the most likely cause is that your engine thermostat is stuck in the open position.
I dont know how many miles you have but its probably time for a new thermostat.

travis819 · **Joined:** Wed Jan 06, 2016 11:37 am **Posts:** 29

flash7210 wrote:

Diesel engines take longer to get warmed up.
The belt driven viscous heater is supposed to help things get warmed up quicker. Is yours disabled?
Unless your heater core is plugged up or the blend air door is not functioning, the most likely cause is that your engine thermostat is stuck in the open position.
I dont know how many miles you have but its probably time for a new thermostat.

I was expecting it to take longer to warm up, I've owned a few Cummins and a Duramax in my diesel career which all warmed up quickly with the block heater, so I was a little suspicious...As far as I know, it's all stock. Nothing looks disconnected under the hood and it's never been modified or tuned according to GDE, at least...I've got 84,000 on the clock so far.

flash7210 · **Posted:** Wed Jan 06, 2016 1:00 pm

travis819 wrote:

flash7210 wrote:

Diesel engines take longer to get warmed up.
The belt driven viscous heater is supposed to help things get warmed up quicker. Is yours disabled?
Unless your heater core is plugged up or the blend air door is not functioning, the most likely cause is that your engine thermostat is stuck in the open position.
I dont know how many miles you have but its probably time for a new thermostat.

I was expecting it to take longer to warm up, I've owned a few Cummins and a Duramax in my diesel career which all warmed up quickly with the block heater, so I was a little suspicious...As far as I know, it's all stock. Nothing looks disconnected under the hood and it's never been modified or tuned according to GDE, at least...I've got 84,000 on the clock so far.

In that case...

Along with a new thermostat, start making plans for a new timing belt and water pump.

jws84_02 · **Posted:** Wed Jan 06, 2016 1:38 pm

Yep these things take forever to warm up and stay warm if driving into a head wind(I even have my front grill blocked off)

But as mentioned if your temp gauge doesn't go above 1/4 then pretty good chance your thermostat is stuck open. There are a few threads on here. Some guys have gone to an upgraded housing. I myself with other have done the stant in line option. Read up and decide which route you want to go

Also the timing belt should be changed asap due to age even at your current mileage

travis819 · **Joined:** Wed Jan 06, 2016 11:37 am **Posts:** 29

jws84_02 wrote:

Yep these things take forever to warm up and stay warm if driving into a head wind(I even have my front grill blocked off)

But as mentioned if your temp gauge doesn't go above 1/4 then pretty good chance your thermostat is stuck open. There are a few threads on here. Some guys have gone to an upgraded housing. I myself with other have done the stant in line option. Read up and decide which route you want to go

Also the timing belt should be changed asap due to age even at your current mileage

I've seen a few things about the stant in line option, that'll probably be the route I take if the tstat is dead. I saw the upgraded one is pretty pricey...I'll do some homework on it and see what all is involved with making the switch to it...thanks for the input!!

olypopper · **Posted:** Wed Jan 06, 2016 4:31 pm

-5f here yesterday and I let my jeep get completely cold soaked while at work....did not plug in. Started up easily when I got off and it warmed up fully at the halfway mark on the way home (one way for me is 16 miles). I purchased an HDS thermostat and installed it about a month ago.

My engine behaved exactly like yours until I did the upgrade. No heat sucks......especially in Alaska.

papaindigo · **Posted:** Wed Jan 06, 2016 4:47 pm

If you have used anything other than HOAT coolant it is possible that the system is partially clogged and needs f!ushing. More likely the OEM tstat has failed open or is opening early. During normal weather, say 50f+ or so does the temp gauge needle get to near vertical, if not the tstat is shot. FYI blend doors control temp output so both heater hoses should feel same temp if return hose is cooler heater core is partially clogged

joe_ · **Posted:** Wed Jan 06, 2016 10:37 pm

olypopper wrote:

-5f here yesterday and I let my jeep get completely cold soaked while at work....did not plug in. Started up easily when I got off

Just curious, what glowplugs are you running?

And just so this post isn't totally off-topic ...

... yeah sounds like a bad thermostat.

olypopper · **Posted:** Thu Jan 07, 2016 1:42 am

joe_ wrote:

olypopper wrote:

-5f here yesterday and I let my jeep get completely cold soaked while at work....did not plug in. Started up easily when I got off

Just curious, what glowplugs are you running?

And just so this post isn't totally off-topic ...

... yeah sounds like a bad thermostat.

.........ceramics........I am ashamed

travis819 · **Joined:** Wed Jan 06, 2016 11:37 am **Posts:** 29

olypopper wrote:

-5f here yesterday and I let my jeep get completely cold soaked while at work....did not plug in. Started up easily when I got off and it warmed up fully at the halfway mark on the way home (one way for me is 16 miles). I purchased an HDS thermostat and installed it about a month ago.

My engine behaved exactly like yours until I did the upgrade. No heat sucks......especially in Alaska.

Yeah, I feel your pain. It must be that it gets cold soaked for me too, because the lightning bolt light comes on at initial start up in the morning, but when I go to lunch or when I go home, no light and temp gauge moves. People look at you funny at red lights when they can see your breath while you're in your running vehicle, lol.

papaindigo wrote:

If you have used anything other than HOAT coolant it is possible that the system is partially clogged and needs f!ushing. More likely the OEM tstat has failed open or is opening early. During normal weather, say 50f+ or so does the temp gauge needle get to near vertical, if not the tstat is shot. FYI blend doors control temp output so both heater hoses should feel same temp if return hose is cooler heater core is partially clogged

I honestly don't know what coolant is in it...I had the stealership go through it when I got it just to make sure there wasn't anything major lurking that I wasn't aware of since I've never owned one of these before. They're clowns and wrote up like an 8,000 dollar bill for "issues that need attention" most of which were bogus. They wanted 895 USD to do a complete fluid flush (engine, tranny, coolant, both diffs) and claimed there was "special diesel fluids" for everything...crapshoot...I bit the bullet and had them do the engine oil and filter and purge the EGR system...My EGR delete kits are in the mail and if that sucker is still caked with soot when I take it off I'm going straight to the dealer and demanding a refund of the 220 USD they charged me to purge it.

BUT, to answer your question...the temp needle has never gone above the first line on the gauge, even with it was 70+ degrees here. Granted I've only had the Jeep for a couple months, but up until the other day when it dropped below freezing consistently I've had no issues with it. My new Stant tstat is in the mail as well, so hopefully that takes care of it.

joelukex4 · **Joined:** Thu Sep 29, 2011 4:54 pm **Posts:** 386

olypopper wrote:

joe_ wrote:

olypopper wrote:

-5f here yesterday and I let my jeep get completely cold soaked while at work....did not plug in. Started up easily when I got off

Just curious, what glowplugs are you running?

And just so this post isn't totally off-topic ...

... yeah sounds like a bad thermostat.

.........ceramics........I am ashamed

Why are you ashamed? I still have my ceramics and when I get my first fault, I will change all 4 immediately with a new set of ceramics. They work much better than the steel glow plugs in this engine.

olypopper · **Posted:** Thu Jan 07, 2016 11:16 am

joelukex4 wrote:

Why are you ashamed? I still have my ceramics and when I get my first fault, I will change all 4 immediately with a new set of ceramics. They work much better than the steel glow plugs in this engine.

More of a joke an anything else. I'm going to install Etechnos in the spring as well as an intake heater.

olypopper · **Posted:** Thu Jan 07, 2016 11:20 am

Travis819, get that tstat installed ASAP. You and your engine will be much happier.

tjkj2002 · **Posted:** Thu Jan 07, 2016 11:34 am

Like most vehicles these days it was most likely neglected as far as fluid changes besides engine oil.

Being it either is a '05 or a '06 and you have no idea about the coolant it's a safe bet that is has the original coolant in it which should have been changed 5-6 years ago.Low mileage for a 10-11 year old vehicle most likely ='s lack of fluid as far as coolant/diffs/trans/t-case changes.

HOAT coolant only every 5 years,better if every 3 years.

jws84_02 · **Posted:** Thu Jan 07, 2016 1:01 pm

Purge the egr??? What does that even mean? Sounds like this dealership needs kicked in the nuts. I will be willing to bet your intake is caked.

How does your map sensor look?

travis819 · **Joined:** Wed Jan 06, 2016 11:37 am **Posts:** 29

jws84_02 wrote:

Purge the egr??? What does that even mean? Sounds like this dealership needs kicked in the nuts. I will be willing to bet your intake is caked.

How does your map sensor look?

Haha, I have no idea what that entails...but the tech that worked on it said he was familiar with the EGR system getting gummed up and that "this would fix it". I'm sure it's caked too, it ran no differently after the service was done. Let's just hope the dealership leadership isn't a bunch of fur burgers and refunds my money if it's blatantly clear the service did nothing.

As far as the MAP, I haven't looked at it yet...my EGR delete kits came in the mail yesterday and my new fuel/water separator should arrive today, so my plan was to install that stuff, check the MAP and give the thing a solid once over now that I'm a little more familiar with it. I'll definitely have updates and probably pictures over the weekend.

ChooChooman74 · **Posted:** Sat Jan 09, 2016 5:36 pm

WOW,
I would go with the stant in hose first. I have a working stock thermo and the stant inhose. I am up to operating temp in about 4 to 8 miles, depending on ambient temperature. Next TB replacement, I am going with the hot diesel 205 degree.

travis819 · **Joined:** Wed Jan 06, 2016 11:37 am **Posts:** 29

jws84_02 wrote:

Purge the egr??? What does that even mean? Sounds like this dealership needs kicked in the nuts. I will be willing to bet your intake is caked.

How does your map sensor look?

I just finished my EGR delete kits and I'll be damned if that intake tube and valve weren't clean as a whistle...I was blown away. The intake manifold, on the other hand looked like crap. All in all though that with the new fuel water separator made it purr like a kitten, I can't wait for my GDE tune to come in!

travis819 · **Joined:** Wed Jan 06, 2016 11:37 am **Posts:** 29

Alright guys...I'm sorry in advance but I'm not sure if I'm looking in the wrong places or searching the wrong words, but I can't find a write up on how to install the Stant thermostat...can someone point me in the right direction with a link or a write up? Feel free to ridicule me mercilessly for being a noob.

Heat issue (search yielded no results)

Who is online