Aftermarket EGT probe W/ Factory Pigtail

B

BuiltSixFo

New member
Hey guy's can you possibly help me? I recently made some custom up pipes for my 6.0 manifolds..I Broke the factory egt sensor in the process.. so I cut the probe off and kept the pigtail (male) end.

My buddy went ahead without me there and to try and help me out cut the old bung off the up pipe and welded a standard 1/8" Bung..thinking that an aftermarket probe is smaller, and a bung is $1 and a ebay probe is $9.. and that I wouldn't want to buy another factory probe..

So....I had no choice but to order an aftermarket ebay probe because the factory is a bit bigger and wouldn't fit in the new bung.. plus he is right and factory is quite more expensive than the ebay probes.

I just installed it tonight
Probe fits in the up pipe nice
I tried to splice it into the factory pigtail(male) that I kept.. (just wrap wires together and shrink tube...I noticed the ends of the ebay probe were not (pardon me here I'm not super smart here) regular wires? They were two small pieces of metal
Looked like two pieces of mig wire
Not a bunch of thin wire twisted like the factory plug wire..

Anyways I wrapped them together

I plugged it into the connector on the truck (female) and I turned the truck on..
My DashDaq (spartan) was beeping and the egt gauge was max'd out at 2000
I unplugged it, and it went cold like 150* probably minimum input..
Switched the wires around and it did the same
14b2dab9048c2d56d0572eef5d66627a.jpg
a43b0b457fac43e364c0ff77093c7f03.jpg


Am I screwed? Do I need to either buy a new gauge.. ebay gauge to go with ebay probe-rather this..

Or a new factory sensor to plug back into the harness.. but then rewelding a new bung-1% chance I'll end up doing this lol..

Or do I need a diode in between? Or is wrapping them together not enough or messing with resistance..!!

Please help!! I tried to be as clear as possible!
Thanks!


Sent from my iPhone using Tapatalk


Sent from my iPhone using Tapatalk
 
I'm going to assume you bought a k-type thermocouple from ebay? And the factory sensor is probably a "resistance temperature device". These work in completely different aspects and aren't compatible.
 
JWhite said:
I'm going to assume you bought a k-type thermocouple from ebay? And the factory sensor is probably a "resistance temperature device". These work in completely different aspects and aren't compatible.
Click to expand...



8f4a9f7b05c02981b8f9303f1df0ea60.jpg


I bought a new sensor today.. with a 1/4" to 1/8" reducer.. it's brass.. can I use this? This should would.....



Sent from my iPhone using Tapatalk
 
95cummins5.9 said:
Ya the brass wont melt on ya haha.
Click to expand...



Really.. I thought I'd melt engine parts before a brass fitting.. inside of a metal bung.... there won't be any brass exposed in the up pipe
Just in the steel bung where the threads sit.
Sorry for the noob questions.


Sent from my iPhone using Tapatalk
 
I've never seen a brass fitting literally melt off a pipe, but they generally don't hold up long term. The vibration and heat cycles will take it's toll IMO
 
JWhite said:
I've never seen a brass fitting literally melt off a pipe, but they generally don't hold up long term. The vibration and heat cycles will take it's toll IMO
Click to expand...



Alright.. thank you so much for the insight..


Sent from my iPhone using Tapatalk
 
The factory 6.4 egt sensor is M12x1.25 thread. A pipe thread bung won’t work. Also the sensor seals on the bottom of the bung.
 
You must log in or register to reply here.
Back
Top