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  #1  
Old 12-07-2011, 06:28 PM
patmac patmac is offline
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Replace themostat

Does anyone know where the thermostat is located and how difficult it is to change? I have a 2007 patriot 2.4
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  #2  
Old 12-07-2011, 06:47 PM
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Here's some info from the 2008 factory service manual:

Testing:

Thermostat diagnostics is included in Totally Integrated Power Module's (TIPM) programming for on-board diagnosis. The malfunction indicator light (MIL) will illuminate and a diagnostic trouble code (DTC) will be set when an open too soon condition occurs. Do not change a thermostat for lack of heater performance or temperature gauge position, unless a DTC is present. For other probable causes, (Refer to 7 - COOLING - DIAGNOSIS AND TESTING).. Thermostat failing shut is the normal long term mode of failure, and normally, only on high mileage vehicles. The temperature gauge will indicate this.

Removal:
GAS - PRIMARY THERMOSTAT

1. Partially drain cooling system (Refer to 7 - COOLING - STANDARD PROCEDURE).
2. Remove air filter housing.
3. Disconnect coolant hose (1) from inlet housing (2).
4. Remove inlet housing bolts (3).
5. Remove thermostat assembly, and clean sealing surfaces.

GAS - SECONDARY THERMOSTAT

1. Partially drain cooling system. (Refer to 7 - COOLING - STANDARD PROCEDURE).
2. Remove air filter housing .
3. Disconnect coolant hoses (1) from rear of coolant adapter (2).
4. Remove radiator hose (3).
5. Remove radiator hose (4) from front of coolant adapter (2).
6. Remove coolant adapter mounting bolts.
7. Carefully slide coolant adapter off water pump inlet tube and remove coolant adapter (2) and secondary thermostat.
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  #3  
Old 12-07-2011, 07:03 PM
patmac patmac is offline
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Thanks Todd that is exactly what I was looking for. I am from the old school/classic type car owner and this patriot is my daily driver . I can work on the classic's but these new models task my ability to do my own repairs.
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Old 12-07-2011, 08:07 PM
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Also, the primary stat is 180 deg. F and the secondary is 203 deg. F.
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  #5  
Old 12-07-2011, 08:47 PM
patmac patmac is offline
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once again thanks. you have been a great help. been searching for repalcement parts. that is when i figured out that they have 2 of them. about the same time you replyed. need to do some more home work and i think i will be able to replace them with a little help from my eldest son this weekend. between the two of us we have five classic hot rods. we do almost all of our own work on them. this looks like it is going to be eaiser than i first thought.
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  #6  
Old 12-13-2011, 04:46 PM
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patmac I couldn't agree with you more - there's not much I enjoy more than working on my own car but these new systems make it more difficult than it used to be...

Thankfully this forum is full of superstars like Todd - an abundance of helpful information is within the threads!
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Old 06-01-2013, 11:46 PM
cn90 cn90 is offline
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Quote:
Originally Posted by todde702 View Post
Also, the primary stat is 180 deg. F and the secondary is 203 deg. F.
Thanks,

From looking at Jeep parts websites:
http://www.trademotion.com/parts/200...iagram=WD07045

They list the tstats as 170F and 203F.

I'd love the replace the 170F with 180F, do you know the PN for the 180F tstat?
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  #8  
Old 06-02-2013, 08:59 AM
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Quote:
Originally Posted by patmac View Post
Thanks Todd that is exactly what I was looking for. I am from the old school/classic type car owner and this patriot is my daily driver . I can work on the classic's but these new models task my ability to do my own repairs.

You are not alone,
Find most new cars have turned routine tasks into major ordeals.
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  #9  
Old 06-02-2013, 09:29 AM
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todde702 todde702 is offline
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Quote:
Originally Posted by cn90 View Post
Thanks,

From looking at Jeep parts websites:
http://www.trademotion.com/parts/200...iagram=WD07045

They list the tstats as 170F and 203F.

I'd love the replace the 170F with 180F, do you know the PN for the 180F tstat?
I couldn't say cn90. According to the 2008 FSM, this is how the T-Stats operate.

Quote:
OPERATION
When the Engine is cold and both the primary and secondary thermostats are closed. The coolant will circulate through the engine, heater system, and the bypass. The cooling system has no flow through the radiator

As the engine warms up, the primary thermostat will start to open at 82 C ( 179 F). Coolant will start to flow through the radiator oil cooler and transmission cooler. Coolant will flow through the transmission oil cooler only when the primary thermostat is fully open. The primary thermostat will fully open at 95 C (203 F).

The secondary thermostat will start to open at 95 C (203 F). This will increase the coolant flow through the cylinder block and cylinder head and the radiator. The secondary thermostat will fully open at 110 C (230 F).

If the thermostat is stuck open or allows coolant leakage through it, the engine will not operate at the proper temperature for obtaining engine fuel efficiency, performance and emissions levels. If this condition occurs, a diagnostic trouble code will be set and a MIL light will be turned on. Refer to the Powertrain Diagnostic Procedures manual for further information and diagnostics provided.
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08 Sport 4x4 FDI Silver, The Black Muffler Gang, Mud Flaps, Weathertech vent shades, TAG Rear Bumper
Carr Lightwing, Pilot Navigator Driving Lights, K&N Air Filter and a jp.com decal

Quote:
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"I swear to drunk I'm not God!"
- Anonymous
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  #10  
Old 10-24-2013, 10:20 PM
cn90 cn90 is offline
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There is some discrepancy here...

I just replaced the thermostats. The primary tstat clearly has Chrysler logo and "170" engraved in it.

The tstat I bought from autohausaz.com also says 170.

The FSM says 179 for primary tstat!!!

What is going on here?
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  #11  
Old 10-25-2013, 07:27 AM
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todde702 todde702 is offline
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Being a mechanical part, it's likely that the T-Stat starts to open at 170 deg. and is fully open by 180 deg. The same may be true of the secondary, which I think someone else mentioned was labeled 190. Those may be the opening temps not the fully open/max flowing temps.
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08 Sport 4x4 FDI Silver, The Black Muffler Gang, Mud Flaps, Weathertech vent shades, TAG Rear Bumper
Carr Lightwing, Pilot Navigator Driving Lights, K&N Air Filter and a jp.com decal

Quote:
"Nothing is either good or bad, but thinking makes it so."
- William Shakespeare

"I swear to drunk I'm not God!"
- Anonymous
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