Forum Discussion

sesspool's avatar
sesspool
Explorer
Jul 09, 2014

adding a transmission temp gauge on P30 chassis

Hello,

I am considering adding a transmission temp gauge to my 93 Southwind.
It is on a P30 chassis with a 454 and 3speed tranny. I get concerned about possible overheating when pulling a toad up long, steep grades.
I would like to know if this is an advisable mod, if anyone has done it on a P30 chassis and where is the best location for the sensor. Also, any recommendations on gauges and sources.
Any help would be appreciated.

Thanks,
Jerry
  • sesspool wrote:
    WyoTraveler wrote:
    I installed one on my 1989 Pace Arrow P30 chassis. I removed tranny pan to check clearance inside. Drilled hole while pan was off. Welder welded nut to pan. Screwed gauge into nut using permatex sealer. Worked great. While I had pan off drilled 2nd hole and 2nd nut welded to use as a drain. I could then drop an empty pan. You must drop pan to check clearance because it is pretty crowded inside tranny.


    That looks like a good solution, I may try that when I change fluid, Did you use synthetic transmission fluid? Did you ever have a problem with the tranny overheating? Maybe I'm being paranoid, My last MH was a pusher with an Allison transmission so I let the computer worry about it
    By the way, I went to high school in Byron, you're probably on the other side of the Big Horns from there.
    Thanks for the help
    Jerry


    In Powell. Back in 89 wasn't a lot of synthetic oil or tranny fluid on the market except Mobil 1. My tranny did over heat on long up grades. I first noticed brownish color of tranny fluid so installed temp gauge. After that I could just pull over when tranny fluid got hot.
  • I put my sensor in the pan. Best to weld the adapter to the pan, or at least use lock tite on the nut.

    http://www.classicwinnebagos.com/forum/index.php/topic,9139.msg52532.html#msg52532
  • Or you can replace the stock tranny pan with something like this one from Mag Hytec which has a port on it for a temp sensor. And it holds 4 extra quarts of fluid for some help with keeping things cool.
  • Thanks for all the great information. I think I am going to order this gauge, it comes with parts to mount it on the pan and use the sensor for the plug.

    http://www.amazon.com/Derale-13009-Oil-Temperature-Gauge/dp/B004XONNQW/ref=cm_sw_em_r_dp_bkVVtb13P9PDBNYC_tt

    Jerry
  • Something else to consider is if you have electric fans in front of the radiator you can hook up a manual switch (with a on light) so you can add extra cooling. The fans are automatic but a switch gives you extra control.
    The fans have a relay and you can wire into the control side.
    I used this switch for faster cool down when coming off of the interstate before shutting down. The temperatures can really build in a hot engine that is shut down too soon.
  • Gjac's avatar
    Gjac
    Explorer III
    Stim wrote:
    Something else to consider is if you have electric fans in front of the radiator you can hook up a manual switch (with a on light) so you can add extra cooling. The fans are automatic but a switch gives you extra control.
    The fans have a relay and you can wire into the control side.
    I used this switch for faster cool down when coming off of the interstate before shutting down. The temperatures can really build in a hot engine that is shut down too soon.
    Rather that replace the sensor in the RH head that controls this fan I put in the lighted switch. When I see a hill coming I turn the fan on before I start the climb. Also I will leave it on when I stop the MH at a rest stop for example just to remove some eng heat.
  • Mine is installed on the output line of the transmission.I also run synthetic trans fluid. Mobil 1. 1 day I plan on adding a deeper aluminum pan to it.
  • On my 91 Pace Arrow I disconnected the transmission fluid lines from the radiator and installed a separate transmission oil cooler. Put a sensor on a T-fitting on the output line, and it worked well. BTW, on the 93 you should have a 4-speed transmission.
  • I guess I misspoke, I have a 3sp with overdrive. I guess that's called a 4speed?
    I have a heat exchanger in front of the radiator with a fan in front of that, I haven't gotten down to see whether the transmission lines go to the radiator or the heat exchanger. I believe the heat exchanger is for the A/C, does that sound right?
    I've kind of sidelined that project for the time being, I'm working on installing a Xantrex inverter/charger right now. I tend to bounce around like a BB in a boxcar with these projects