dodge ram thermostst

[rmoparman]

Need new thermostat for 92 Cummins. Went by Cummins and they charged me 44.00 bucks. I thought was high. Maybe next time napa, or auto zone.:E

[C_Schomer]

The Cummins stat for my 97 flowed more than the napa in my 97. Nothing would make it warm up other than cardboard in front of the radiator when I was in Denver. I stayed with the Cummins stat in my 03 and the 3rd gens warm up better and stay warm. Az probably has something to do with it, too. Craig

[Hannibal]

thomasmnile wrote:

Hannibal wrote:
People whined about the serpentine belt chirp at shutdown too but I don't know if that problem (normal characteristic) was addressed or not. I don't recall my '03 having the Cummins chirp.

Nah, my '05 sings like a canary when you turn it off.........:B

Ah! That's good there's at least a chirp of nostalgia left in them!:B

[Cummins12V98]

thomasmnile wrote:

Hannibal wrote:
People whined about the serpentine belt chirp at shutdown too but I don't know if that problem (normal characteristic) was addressed or not. I don't recall my '03 having the Cummins chirp.

Nah, my '05 sings like a canary when you turn it off.........:B

GoodYear Gatorback belt will cure the chirp.

[Perrysburg_Dodg]

Well it doesn't look like the temps are going up anytime soon and it is snowing yet again. :M I wounder if the dealer carries the Cummins stat? Maybe I'll do the water pump at the same time.

So anybody that has changed out the water pump how much anti-freeze do I have to drain to do the water pump? I know, I know when I did the hoses, belts and anti-freeze last year I should have changed it then. Now I have to try and catch what 8 gallons maybe? Don't know how or why I missed the water pump.

Don

[_1Flyboy]

.. . Put a Napa T-Stat next to an OEM T-Stat & you can SEE why there is a difference in price!!!!!!!

[thomasmnile]

Hannibal wrote:
People whined about the serpentine belt chirp at shutdown too but I don't know if that problem (normal characteristic) was addressed or not. I don't recall my '03 having the Cummins chirp.

Nah, my '05 sings like a canary when you turn it off.........:B

[Hannibal]

When I owned my '95 Cummins Ram, I remember the whining being about the gauge moving when the T-stat opened and closed. So Cummins re-engineered the T-stat to have a "soft seat" so the gauge wouldn't move and upset pickup truck owners. Same with the silencer ring in the turbo to quiet the turbo's normal sound. Then the 47RE came out to correct the pitfalls of the 47RH and it worked great but Chrysler had to change programming so it would shift according to "customer expectations" and then it was a POS. People whined about the serpentine belt chirp at shutdown too but I don't know if that problem (normal characteristic) was addressed or not. I don't recall my '03 having the Cummins chirp.

[Cummins12V98]

Yes Cummins did have a revised stat to control temp swings. No "proof" you just have to believe us!

[ScottG]

Perrysburg Dodgeboy wrote:

ScottG wrote:
The Cummins stat will have less swing in temp so you get more consistent heat. This was a problem Cummins worked on for some time because of complaints about poor cab heat in very cold weather.

Do you have any links to prove this? Don't take that the wrong way, I changed the stat (NAPA), all hoses and belts last year and this winter I'm not happy with the heat. So if paying $40 will help improve the heat during very cold temps then it would be the cost.

Don

Don, you can check out the "second gen forum" at the Turbo Diesel Registry for a number of conversations on the subject.

Scott

[Old-Biscuit]

Does seem to be difference of opinions/effects between Cummins and NAPA and Slant on the cumminsforum.com.

Fluctuations on Cummins...cured with a Napa
Fluctuations on a Napa...cured with a Slant
Fluctuations on a Slant...cured with a Napa
Fluctuations on ..........well any of them cured by any of them

Same kind of back & forth on turbodieselregister.com & dieseltruckresource.com

Some things mentioned:
The Cummins is a flat seat and Napa tapered seat on bypass
The Cummins 'fails open'......Napa 'fails closed'.......Slant 'fails open'
The Cummins is a larger/heavier duty.....Napa looks like a gas t-stat with a large flange so as to fit housing.

And at Genos Garage......they only show GATES ('89 thru '09) from $10 to $17
and a SLANT ('10 thru '12) for $18

So which one...........:H

[Perrysburg_Dodg]

ScottG wrote:
The Cummins stat will have less swing in temp so you get more consistent heat. This was a problem Cummins worked on for some time because of complaints about poor cab heat in very cold weather.

Do you have any links to prove this? Don't take that the wrong way, I changed the stat (NAPA), all hoses and belts last year and this winter I'm not happy with the heat. So if paying $40 will help improve the heat during very cold temps then it would be the cost.

Don

[Cummins12V98]

www.genosgarage.com

Factory Cummins, Fleetguard and Mopar parts at a reasonable price.

[ScottG]

The Cummins stat will have less swing in temp so you get more consistent heat. This was a problem Cummins worked on for some time because of complaints about poor cab heat in very cold weather.

[Old-Biscuit]

Napa economy t-stat (180*F or 190*F)....$6
Napa regular t-stat (180*F)....$9
Napa premium t-stat (195*F)....$9

But they don't come with the cool blue template (marked 'Not A Gasket') for checking t-stat housing for interference