EGT Probe Connector Disassembly - Dodge Cummins Diesel Forum
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Old 11-01-2008, 10:36 PM   #1 (permalink)
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EGT Probe Connector Disassembly

While sitting around waiting for a rain squall to pass I decided to tinker with taking apart the EGT probe connectors, I have no idea why anyone would want to take one of these apart.

The tools I used - bear in mind that I'm just a guy in a garage using whatever I have in my box, the drillbit is a #55 not pictured is a razor blade for cutting the heat shrink.



First remove the heat shrink. (For replacement I used 3/4" dual wall adhesive lined moisture resistant heat shrink from a local electronics store)




Next remove the plastic cap on the back of the connector, pictured below is the latch that holds it on and there are about a dozen ways to pop it off.



After the cap comes the seal, easily removed with needle nose pliers or a dental pick.



To remove the orange 'holder' from the front of the connector use the #55 drill (or something of similar size) and push on the orange tab from inside the back of the connector.







Once the orange 'holder' is out of the way the pins can be removed by lifting the tab (the dental pick works well for this) holding them in from the front while gently tugging on the wire from the back.





When finished you should have this...



For reference the pins are much easier to solder regular wire to with traditional soldering methods.

I have no idea why anyone would want to do this unless a rain squall happens to be keeping you from your wood chipping.
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Last edited by slagburn; 11-01-2008 at 10:39 PM.
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Old 11-17-2008, 01:11 AM   #2 (permalink)
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Good write up...I missed this one till now. Adding some resistors would be a lot easier after tearing the plug down. Thanks!
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Old 11-17-2008, 02:56 PM   #3 (permalink)
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Quote:
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Good write up...I missed this one till now. Adding some resistors would be a lot easier after tearing the plug down. Thanks!
very nice writeup. I dunno why you would do this to put in resistors (for a DIY DPF delete). I just cut the outside jacket, stripped the insulation and soldered on the resistors between each wire. If I ever need to go back to stock (heaven forbid) all I have to do is melt the solder and remove the resistors.

maybe there's enough room for a resistor in the pulg - maybe not, I dunno.....
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Old 11-17-2008, 03:22 PM   #4 (permalink)
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Resistors upto 1/2 watt will fit inside housing.

I got my hands on some other probes rather than removing the ones from my DPF, at some point I want to modify the probes to appear to be stock to work with a hollowed out DPF... if I ever find someone who wants to sell me a DPF and isn't demanding an arm and a leg for it.
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Old 11-17-2008, 03:42 PM   #5 (permalink)
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Resistors upto 1/2 watt will fit inside housing.

I got my hands on some other probes rather than removing the ones from my DPF, at some point I want to modify the probes to appear to be stock to work with a hollowed out DPF... if I ever find someone who wants to sell me a DPF and isn't demanding an arm and a leg for it.
good to know. I've got a 1 watt on the 1st EGT & 1/2 watt on the next two.

Tis gonna be hard to find someone willing to let their DPF go (for a decent price). My suggestion is to talk to dealerships..... I don't know exactly what they do with cracked DPFs - but I've seen a ton of them here at our small dealership.... if you've got a good relationship with one maybe they would sell one to you for cheap? Prolly not - but might be worth the effort?
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Old 11-17-2008, 10:07 PM   #6 (permalink)
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I've got a 1 watt on the 1st EGT & 1/2 watt on the next two.
What do you mean? The watt rating on a resistor is how much power it will take before it burns up. The more importand thing to know is the impedance of the resistors in your setup...or the ohm rating of the resistors. Which resistors are in your setup?
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Old 11-18-2008, 02:02 AM   #7 (permalink)
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What do you mean? The watt rating on a resistor is how much power it will take before it burns up. The more importand thing to know is the impedance of the resistors in your setup...or the ohm rating of the resistors. Which resistors are in your setup?
1k (1 watt) & 2 680s (1/2 watt) - I just went for the highest watt rating I could find for each type of resistor - figured it couldn't hurt (but probably overkill).

more reading:

H&S fooler box
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Old 11-18-2008, 03:05 AM   #8 (permalink)
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Originally Posted by aaronesq View Post
1k (1 watt) & 2 680s (1/2 watt) - I just went for the highest watt rating I could find for each type of resistor - figured it couldn't hurt (but probably overkill).

more reading:

H&S fooler box

Ahh, That explains it! Thank you for the info! Over kill is okay...almost expected here actually! :thumbsup

I am going to try some experiments now that I have a new exhaust system on my truck to see which setup works best.
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Old 11-18-2008, 09:11 AM   #9 (permalink)
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1/2 watt in the plastic housing.

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Old 11-19-2008, 11:09 PM   #10 (permalink)
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anyone know where i can find/get these connectors without disassembling the EGT probe?
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Old 11-21-2008, 12:02 AM   #11 (permalink)
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so what is this little trick going to accomplish?
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Old 11-21-2008, 12:26 AM   #12 (permalink)
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so what is this little trick going to accomplish?
Homebrew EGT foolers / sims.
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