Good morning gang:
I took advantage of the 52-degree day yesterday and did a little work on Mad Max making sure I am good for the winter months ahead. There is a 2-pin factory connection just forward of what I believe to be the 3-wire TPS connection on the driver’s side of the transmission. It is connected to what looks like a temp sending unit “tee’d” into a metal transmission line. I do not have a factory or aftermarket trans temp gauge in my truck (at Ieast I think I don't.) One of the wires on this 2-pin plug was disconnected/broken so I had to take the plug apart, solder in new wires, shrink wrap them, reassemble the plug and splice them all back together. I have not driven the truck since my tinkering yesterday and I am curious as to what this 2-pin connection is that I just repaired. On a side note: I ordered a TPS delete kit from DNR yesterday and will install that when it comes in because I lost overdrive (again) last week.
Thanks for any guidance/info on this.
Ciao
Doc

 

You most likely have OD now. That connection you fixed is a high temp sensor for converter fluid outlet temp. It is a normaly closed switch. It opens when the trans outlet temps go above 270 degrees. Then it resets when the line temps come under 240.

So a broken connection would be telling the PCM it was seeing high converter outlet temps. The PCM would drop OD for that reason.

 

Cool!

Thank you.

With the new TPS detelt kit that I plan on istalling would default this closed switch to the open position? If so, could it be by-passed all together?

Now if I can only figure out haw to post photos into my profile I would be happy. I just uploaded several photos and I have no idea where they went..........Oops......

 

The picture uploading system on this computer is real flakey, I would start a free www.photobucket.com account- Then upload your pics to there, and Copy the IMG code under the picture you want, and paste the IMG code in a post on here. The picture will pop up

 

That DNR delete kit is just a pot type switch with some wire included. What it does is bypass the TPS mounted on top of the injection pump.

It will do nothing about taking that temp sensor out of the circuit. If you want the temp sensor gone. Just cut the plug off and solder the wires together.

 

slatemd, did you have mad max for sale at truck carlisle in carlisle, pa ??

 

Yes, I was seeing if there was any interest in Max. I had many people stop and comment or talk to me about Max and all the customizations that were done. Everyone who stopped was impressed, but everyone was concerned with the economy so they kept their money in their pockets or they knew better NOT to throw out a low ball offer for fear that I would square up their nuts with my boot!

One exception was this dude from Canada who could not believe I refused to take $400 for my custom ram hood ornament. He even waved the bills at me so I would get “nervous” and make a rash decision. I just laughed at him and told him to put his Benjamins back in his pocket. I told him that I would kick myself in the a$$ many times over if I sold that ram head. I did meet a man from down south who wants to make a mold of it as so we can reproduce it. I might do that, I do not know as of this posting. I have way too much $hit to do this winter to be thinking about it.

I have been going to Carlisle for the past 20 years. I have sold a few vehicles there and I enjoy hanging out with the many people/friends I have met there over the years. I learn a great deal because there is a mess load of cool knowledgeable people who love the Mopars at Carlisle. I used to run a 68 Charger (650+ horse power) in my former life, but that’s a different story for a different time. I have only started learning about the 1st Gens now for about 3-years and when I can, I spend time tinkering with Max and/or reading up on the 1st Gens.

Did you stop and talk to me?

I bet you did!

What did you think about Max?

Let me know please......

 

It will do nothing about taking that temp sensor out of the circuit. If you want the temp sensor gone. Just cut the plug off and solder the wires together.

Is there an advantage to doing this?

Is there a disadvantage to doing this?

Question: Even with the new TPS delete installed, if a temp sensor wire disconnects again, the computer will shut down the OD like it just did? (I'm assumming because I have not driven Max yet after the repairs from several days ago.)

Thanks for responding. This is probably old easy stuff for you, but its all new to me!

 

The switch is to drop the tranny out of OD if it gets too hot, protecting you from your own idiocy. If you feel confident about protecting yourself, you can delete it. I find it hard to see how you'll do that without a trans temp gauge, though.

 

Good point. What temp ranges should I normally see, and at what temp should I start to worry?

 

The temp range depends on the load against the vehicle. In an empty setting. You won't see temps much over 160 or so. Loaded heavy or trailer towing. You can see temps up high enough to damage a trans. The orginal temp sensor is made to drop OD at 270 degrees. It will auto reset at 240 degrees.

The newer trucks starting with the 47Re had that sensor moved into the trans pan. It is set for 265 degrees to drop OD. Most likely if a trans sees 265 degrees pan temps. That trans is smoked. Time for a rebuild most likely.

 

The only thing Max pulls (on occassion) is a 14' "V" nose trailer for my quads. I tell you I hardly know its there. Also, I have a secondary trans cooler installed.

So the TPS delete kit that I will install next week will still allow this sensor to function, right? Assumming that my electrical skills were good enough to fix the sensor, that is....