70 C / 160 F thermostat
Thread Starter
MBWorld Fanatic!
Joined: Jul 2005
Posts: 1,224
Likes: 6
From: S.E. FLA.
05 ML-500 , 03 CLK5.5 AMG has left the Garage
70 C / 160 F thermostat
Hi Folks:
I've been working on a 70c / 160 f replacement thermostat . So far it will fit a C-55 with a M-113 engine , The factory piece is 87 c / 189 f
Opinions , is it needed? Thanks ___PTE___
I've been working on a 70c / 160 f replacement thermostat . So far it will fit a C-55 with a M-113 engine , The factory piece is 87 c / 189 f
Opinions , is it needed? Thanks ___PTE___
SPONSOR
Joined: Mar 2006
Posts: 2,517
Likes: 1
From: Ohio
...
i am wondering if it will trigger a check engine light? i would like to do this as well for the C32, but don't know if it will work without the computer freaking out because it never gets to that temperature anymore...
Thread Starter
MBWorld Fanatic!
Joined: Jul 2005
Posts: 1,224
Likes: 6
From: S.E. FLA.
05 ML-500 , 03 CLK5.5 AMG has left the Garage
70 C / 160F thermostat
Look at all the post in E-55
https://mbworld.org/forums/members/25327-rflow306.html
Take Care Patrick T. Eves
https://mbworld.org/forums/members/25327-rflow306.html
Take Care Patrick T. Eves
SPONSOR
Joined: Mar 2006
Posts: 2,517
Likes: 1
From: Ohio
...
Originally Posted by PTE
Look at all the post in E-55
https://mbworld.org/forums/members/25327-rflow306.html
Take Care Patrick T. Eves
https://mbworld.org/forums/members/25327-rflow306.html
Take Care Patrick T. Eves
Thread Starter
MBWorld Fanatic!
Joined: Jul 2005
Posts: 1,224
Likes: 6
From: S.E. FLA.
05 ML-500 , 03 CLK5.5 AMG has left the Garage
thermostat
Quote:
Originally Posted by GTA23109a
Sounds great, but there are a couple pitfalls to watch out for.
First, it's going to suck in winter time as the car will have a hard time maintaining temperature. Been-there, done-that with other low-temp thermostat applications.
Second, the ECU calibration needs to be adjusted so the car doesn't get stuck in "cold-start" mode (for lack of a better description) and run rich as heck thinking it still needs to warm up.
If you can overcome these obstacles (mainly the second one) it could prove a very worthwhile, and cost-effective mod.
Quote from rfow 306 Below
PTE made one for me so I have been able to data log and get some feed back. The car idles at about 167-173 with the ac on and 188 to 192 ac off.
When cruising ac on or off, the temp drops to 165. According to my data logger cold start mode turns off at about 130-140 degrees. The o2 sensor voltage and fuel trim changes around there and looks identical to factory thermostat. Big thumbs up from me so far.
Originally Posted by GTA23109a
Sounds great, but there are a couple pitfalls to watch out for.
First, it's going to suck in winter time as the car will have a hard time maintaining temperature. Been-there, done-that with other low-temp thermostat applications.
Second, the ECU calibration needs to be adjusted so the car doesn't get stuck in "cold-start" mode (for lack of a better description) and run rich as heck thinking it still needs to warm up.
If you can overcome these obstacles (mainly the second one) it could prove a very worthwhile, and cost-effective mod.
Quote from rfow 306 Below
PTE made one for me so I have been able to data log and get some feed back. The car idles at about 167-173 with the ac on and 188 to 192 ac off.
When cruising ac on or off, the temp drops to 165. According to my data logger cold start mode turns off at about 130-140 degrees. The o2 sensor voltage and fuel trim changes around there and looks identical to factory thermostat. Big thumbs up from me so far.
SPONSOR
Joined: Mar 2006
Posts: 2,517
Likes: 1
From: Ohio
...
Originally Posted by PTE
Quote:
Originally Posted by GTA23109a
Sounds great, but there are a couple pitfalls to watch out for.
First, it's going to suck in winter time as the car will have a hard time maintaining temperature. Been-there, done-that with other low-temp thermostat applications.
Second, the ECU calibration needs to be adjusted so the car doesn't get stuck in "cold-start" mode (for lack of a better description) and run rich as heck thinking it still needs to warm up.
If you can overcome these obstacles (mainly the second one) it could prove a very worthwhile, and cost-effective mod.
Quote from rfow 306 Below
PTE made one for me so I have been able to data log and get some feed back. The car idles at about 167-173 with the ac on and 188 to 192 ac off.
When cruising ac on or off, the temp drops to 165. According to my data logger cold start mode turns off at about 130-140 degrees. The o2 sensor voltage and fuel trim changes around there and looks identical to factory thermostat. Big thumbs up from me so far.
Originally Posted by GTA23109a
Sounds great, but there are a couple pitfalls to watch out for.
First, it's going to suck in winter time as the car will have a hard time maintaining temperature. Been-there, done-that with other low-temp thermostat applications.
Second, the ECU calibration needs to be adjusted so the car doesn't get stuck in "cold-start" mode (for lack of a better description) and run rich as heck thinking it still needs to warm up.
If you can overcome these obstacles (mainly the second one) it could prove a very worthwhile, and cost-effective mod.
Quote from rfow 306 Below
PTE made one for me so I have been able to data log and get some feed back. The car idles at about 167-173 with the ac on and 188 to 192 ac off.
When cruising ac on or off, the temp drops to 165. According to my data logger cold start mode turns off at about 130-140 degrees. The o2 sensor voltage and fuel trim changes around there and looks identical to factory thermostat. Big thumbs up from me so far.
Thread Starter
MBWorld Fanatic!
Joined: Jul 2005
Posts: 1,224
Likes: 6
From: S.E. FLA.
05 ML-500 , 03 CLK5.5 AMG has left the Garage
Thermostat
Don't I wish it was that easly. It is a different return spring . Different vernathern center & valve. Plus some machining to get it all to fit. I do install a air bleed hole in the alum housing.
Trending Topics
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
MBWorld Fanatic!
Joined: Nov 2001
Posts: 1,289
Likes: 3
From: OC
C32
Originally Posted by PTE
Quote:
Originally Posted by GTA23109a
Sounds great, but there are a couple pitfalls to watch out for.
First, it's going to suck in winter time as the car will have a hard time maintaining temperature. Been-there, done-that with other low-temp thermostat applications.
Second, the ECU calibration needs to be adjusted so the car doesn't get stuck in "cold-start" mode (for lack of a better description) and run rich as heck thinking it still needs to warm up.
If you can overcome these obstacles (mainly the second one) it could prove a very worthwhile, and cost-effective mod.
Quote from rfow 306 Below
PTE made one for me so I have been able to data log and get some feed back. The car idles at about 167-173 with the ac on and 188 to 192 ac off.
When cruising ac on or off, the temp drops to 165. According to my data logger cold start mode turns off at about 130-140 degrees. The o2 sensor voltage and fuel trim changes around there and looks identical to factory thermostat. Big thumbs up from me so far.
Originally Posted by GTA23109a
Sounds great, but there are a couple pitfalls to watch out for.
First, it's going to suck in winter time as the car will have a hard time maintaining temperature. Been-there, done-that with other low-temp thermostat applications.
Second, the ECU calibration needs to be adjusted so the car doesn't get stuck in "cold-start" mode (for lack of a better description) and run rich as heck thinking it still needs to warm up.
If you can overcome these obstacles (mainly the second one) it could prove a very worthwhile, and cost-effective mod.
Quote from rfow 306 Below
PTE made one for me so I have been able to data log and get some feed back. The car idles at about 167-173 with the ac on and 188 to 192 ac off.
When cruising ac on or off, the temp drops to 165. According to my data logger cold start mode turns off at about 130-140 degrees. The o2 sensor voltage and fuel trim changes around there and looks identical to factory thermostat. Big thumbs up from me so far.
Thread Starter
MBWorld Fanatic!
Joined: Jul 2005
Posts: 1,224
Likes: 6
From: S.E. FLA.
05 ML-500 , 03 CLK5.5 AMG has left the Garage
thermostat
The stock OEM is 87 C / 189 , the engine runs about 205 F . In traffic it really gets sluggish on a hot day here in Florida. H/P gain on cold or mild day not much , but on a hot day, you have enough reserve , that the motor runs more consentant, from stop light to stop light.
No big hp claims
No big hp claims
SPONSOR
Joined: Mar 2006
Posts: 2,517
Likes: 1
From: Ohio
...
Originally Posted by Zeppelin
So what were the stock numbers? And are the stock numbers bad? How many horsepower do you expect from this, if any. And if none what is the point.
SPONSOR
Joined: Mar 2006
Posts: 2,517
Likes: 1
From: Ohio
...
Originally Posted by PTE
Don't I wish it was that easly. It is a different return spring . Different vernathern center & valve. Plus some machining to get it all to fit. I do install a air bleed hole in the alum housing.
Thread Starter
MBWorld Fanatic!
Joined: Jul 2005
Posts: 1,224
Likes: 6
From: S.E. FLA.
05 ML-500 , 03 CLK5.5 AMG has left the Garage
thermostat
Thanks PTE. Part number for a E-55 Compressor thermostat assy 113-203-02-75 $78.90
Part Number for a Clk -C 5.5 N/A
thermostat assy 112-203-02-75 $25.00
The only difference I can measure is the addition. bend & lenght in the neck to clear the compressor belt and $54.00?? . For the compressor one. left in the picture
Part Number for a Clk -C 5.5 N/A
thermostat assy 112-203-02-75 $25.00
The only difference I can measure is the addition. bend & lenght in the neck to clear the compressor belt and $54.00?? . For the compressor one. left in the picture
MBWorld Fanatic!
Joined: Nov 2001
Posts: 1,289
Likes: 3
From: OC
C32
Originally Posted by PTE
The stock OEM is 87 C / 189 , the engine runs about 205 F . In traffic it really gets sluggish on a hot day here in Florida. H/P gain on cold or mild day not much , but on a hot day, you have enough reserve , that the motor runs more consentant, from stop light to stop light.
No big hp claims
No big hp claims
SPONSOR
Joined: Mar 2006
Posts: 2,517
Likes: 1
From: Ohio
...
Thanks PTE. Part number for a E-55 Compressor thermostat assy 113-203-02-75 $78.90
Part Number for a Clk -C 5.5 N/A
thermostat assy 112-203-02-75 $25.00
The only difference I can measure is the addition. bend & lenght in the neck to clear the compressor belt and $54.00?? . For the compressor one. left in the picture
Part Number for a Clk -C 5.5 N/A
thermostat assy 112-203-02-75 $25.00
The only difference I can measure is the addition. bend & lenght in the neck to clear the compressor belt and $54.00?? . For the compressor one. left in the picture
going to bring this back from the grave...PTE, did you ever figure out what it will take to get it to work on the C32? i want one, need one, just let me know what needs to happen to get this on my car...thanks
Thread Starter
MBWorld Fanatic!
Joined: Jul 2005
Posts: 1,224
Likes: 6
From: S.E. FLA.
05 ML-500 , 03 CLK5.5 AMG has left the Garage
Back From the Grave??
Well this is what Happened. It took 6 weeks to get one for a C-32 , from the other side of the BLACK FOREST, By Stuttgart?? Germany. I finally Got it. Modded it . Sent it out . Wrote the Guy about 3 weeks , , He has decided to wait . Cold weather has set in ,In North Georga. I really didn't want put many out there. Without testing. I do not have excess to a C/SLK -32 . for testing. So I ordered another one ,3 weeks ago. I would rather know that it works , than disappoint a bunch of you.
MBWorld Fanatic!
Joined: Jul 2004
Posts: 1,194
Likes: 2
From: Diamond Bar & Anaheim, CA
2003 C-Class Sportcoupe
PTE,
Would you be able to use a thermostat from a C320 and modify that one for my C32 motor? I have my old C320 motor sitting in the shop, and the thermostat housing looks the same. It rarely gets very cold in California...
Would you be able to use a thermostat from a C320 and modify that one for my C32 motor? I have my old C320 motor sitting in the shop, and the thermostat housing looks the same. It rarely gets very cold in California...
SPONSOR
Joined: Mar 2006
Posts: 2,517
Likes: 1
From: Ohio
...
Well this is what Happened. It took 6 weeks to get one for a C-32 , from the other side of the BLACK FOREST, By Stuttgart?? Germany. I finally Got it. Modded it . Sent it out . Wrote the Guy about 3 weeks , , He has decided to wait . Cold weather has set in ,In North Georga. I really didn't want put many out there. Without testing. I do not have excess to a C/SLK -32 . for testing. So I ordered another one ,3 weeks ago. I would rather know that it works , than disappoint a bunch of you.
MBWorld Fanatic!
Joined: Dec 2005
Posts: 2,347
Likes: 1
From: So Cal
2006 Weistec 3.0L SC'd C55, 2006 MaxPsi PT6466 Turbo'd M3, 2019 Maserati GTS , 2020Alfa Quadrifoglio
I may want to try this for my Supercharged C55. PM me with the price and availablility.
