White Spyder Posted June 17, 2021 Report Share Posted June 17, 2021 My 48 Windsor with fluid drive had a leaking Welch plug that required me to remove the oil canister and hard lines. After the repair, I went for a test run and now seem to be having an issue with the solenoid that controls the fluid drive. When decelerating, the solenoid rapidly clicks at about 40 mph and 20 mph. It also disengages the transmission occasionally. While working n the Welch plug I was leaning into the car over the solenoid. I check the wires and idle and all is good. Any help is appreciated. Quote Link to comment Share on other sites More sharing options...
wagoneer Posted June 17, 2021 Report Share Posted June 17, 2021 The fluid drive solenoids are on the transmission itself called the Governor and The Interruptor switch. Recommend reviewing the troubleshooting guide from MTSC -- https://www.mymopar.com/downloads/mtsc/024.pdf and watching the videos -- https://mymopar.com/browse-mtsc-by-model-year-1949/ See July and August 1949. What you may have done though is affected the wiring that is on the fender near the oil canister, or possibly the oil to the transmission is low. The shifting action is related to the engine speed, idle speed, oil pressure, electrical signal. And remember the up and down rule.... up for upshift, and down for downshift Quote Link to comment Share on other sites More sharing options...
harmony Posted June 17, 2021 Report Share Posted June 17, 2021 This is just a shot in the dark, but perhaps while you were leaning in over the fender working on that oil canister, you were pressing up against the transmission relay. Perhaps one of the wires has come loose. Maybe you dislodged that fuse that sticks up? Not to suggest that that would directly cause your transmission to jump out of gear, but it wouldn't hurt to check out that relay. 1 Quote Link to comment Share on other sites More sharing options...
White Spyder Posted June 18, 2021 Author Report Share Posted June 18, 2021 I stand corrected. It is the relay that is on the driver’s side fender tat is rapidly clicking. Quote Link to comment Share on other sites More sharing options...
greg g Posted June 18, 2021 Report Share Posted June 18, 2021 Does the relay self ground? Perhaps leaning on it compromised the ground. Quote Link to comment Share on other sites More sharing options...
wagoneer Posted June 18, 2021 Report Share Posted June 18, 2021 Pull the vertical 30 amp fuse to stop the auto-shifting. Check the wiring connections here that they are solid. Quote Link to comment Share on other sites More sharing options...
White Spyder Posted June 18, 2021 Author Report Share Posted June 18, 2021 I stand corrected. It is the relay that is on the driver’s side fender tat is rapidly clicking. Quote Link to comment Share on other sites More sharing options...
White Spyder Posted June 18, 2021 Author Report Share Posted June 18, 2021 I believe I found the issue. Haven’t driven yet to confirm. I do recall y shop light falling while doing the Welch plug. MST have pulled the wire loose. Quote Link to comment Share on other sites More sharing options...
chrysler1941 Posted June 18, 2021 Report Share Posted June 18, 2021 What's this? a temp sender for defroster ? Quote Link to comment Share on other sites More sharing options...
harmony Posted June 18, 2021 Report Share Posted June 18, 2021 As you probably figured out by now, that wire on your carb is the kickdown connection and the other end of that wire goes to the TH terminal on your transmission relay. Which is the bottom one on the side of the relay that has two terminals. Quote Link to comment Share on other sites More sharing options...
White Spyder Posted June 18, 2021 Author Report Share Posted June 18, 2021 1 hour ago, chrysler1941 said: What's this? a temp sender for defroster ? Electrical connector for the Fluid drive to control the transmission relay. Quote Link to comment Share on other sites More sharing options...
Sniper Posted June 18, 2021 Report Share Posted June 18, 2021 2 hours ago, White Spyder said: Electrical connector for the Fluid drive to control the transmission relay. He's asking about the thing in the heater hose. Quote Link to comment Share on other sites More sharing options...
Dodgeb4ya Posted June 20, 2021 Report Share Posted June 20, 2021 Odd place to mount a temp gauge sensor bulb. Quote Link to comment Share on other sites More sharing options...
White Spyder Posted June 28, 2021 Author Report Share Posted June 28, 2021 Drove 50 miles to a show this weekend after a the repairs. Bonnie did not miss a beat; 60-65 mph in 93* and the gauges read 180* temp and just under 40psi for the oil. All is good. 2 Quote Link to comment Share on other sites More sharing options...
greg g Posted June 28, 2021 Report Share Posted June 28, 2021 Looking ship shape and operating in Bristol fashion. Just like does supposed to. Quote Link to comment Share on other sites More sharing options...
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