Hey guys,
I have been looking into exhaust temp sensors for the last 2 weeks because I have a real issue with over paying for a simple component from Cat. In Canada, the exhaust temp sensors go for $150, and IMO that was just too much to ask. Thinking these probs are a generic item, I looked around and this is what I found.
The new 2011 GM Diesel engines use an exhaust temp sensor that looked virtually identical to the Cat one. I spoke to a few diesel techs and received the diagnostic info and temp: resistance chart.
It was tricky to to get this info as I asked several places without much luck. Not to name names, but thanks to the tech that got me what I needed.
The only thing that you have to go is either change the connector to cut and solder the pig tails together.
Specs:
Cat prob: P/N 0630-229
2011 Chev Diesel prob: P/N 12636945 (replaced by 12643246)
Exhaust Temp Sensors
Temp Cat Prob Gm Prob P/N 12636945)
(*F) (ohms) (ohms)
-40 170 170
-4 185 185
32 200 200
77 220 220
122 240 238
212 275 276
302 315 313
392 350 349
482 385 385
572 420 420
752 490 488
932 555 554
1112 620 618
1292 680 680
1472 740 738
1652 795 795
1832 850 849
I have not had a chance to run this yet, but once I do, I will let you know how it went. Should just be a few more days.
![Exhaust temp chart.JPG Exhaust temp chart.JPG](https://www.snowest.com/forum/data/attachments/107/107600-efba98f8623a65e5f3fac111fe7a496d.jpg?hash=77qY-GI6Ze)
I have been looking into exhaust temp sensors for the last 2 weeks because I have a real issue with over paying for a simple component from Cat. In Canada, the exhaust temp sensors go for $150, and IMO that was just too much to ask. Thinking these probs are a generic item, I looked around and this is what I found.
The new 2011 GM Diesel engines use an exhaust temp sensor that looked virtually identical to the Cat one. I spoke to a few diesel techs and received the diagnostic info and temp: resistance chart.
It was tricky to to get this info as I asked several places without much luck. Not to name names, but thanks to the tech that got me what I needed.
The only thing that you have to go is either change the connector to cut and solder the pig tails together.
Specs:
Cat prob: P/N 0630-229
2011 Chev Diesel prob: P/N 12636945 (replaced by 12643246)
Exhaust Temp Sensors
Temp Cat Prob Gm Prob P/N 12636945)
(*F) (ohms) (ohms)
-40 170 170
-4 185 185
32 200 200
77 220 220
122 240 238
212 275 276
302 315 313
392 350 349
482 385 385
572 420 420
752 490 488
932 555 554
1112 620 618
1292 680 680
1472 740 738
1652 795 795
1832 850 849
I have not had a chance to run this yet, but once I do, I will let you know how it went. Should just be a few more days.
![!CCuTg2wCGk~$(KGrHqR,!k4Ez+027ORzBNMHHudb5!~~0_12.JPG !CCuTg2wCGk~$(KGrHqR,!k4Ez+027ORzBNMHHudb5!~~0_12.JPG](https://www.snowest.com/forum/data/attachments/107/107575-29ff99b9f9e8591bd52661fffb8b0560.jpg?hash=Kf-ZufnoWR)
![IMG00492-20110125-1147.jpg IMG00492-20110125-1147.jpg](https://www.snowest.com/forum/data/attachments/107/107585-9efd0dc019a276cd43241212887be984.jpg?hash=nv0NwBmids)
![IMG00512-20110203-1137.jpg IMG00512-20110203-1137.jpg](https://www.snowest.com/forum/data/attachments/107/107593-e41f26373ea0baa12572ba67a285a392.jpg?hash=5B8mNz6guq)
![Exhaust temp chart.JPG Exhaust temp chart.JPG](https://www.snowest.com/forum/data/attachments/107/107600-efba98f8623a65e5f3fac111fe7a496d.jpg?hash=77qY-GI6Ze)
Last edited: