Intermittent Overdrive - What is causing it?
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- čas přidán 10. 11. 2023
- The J-Type overdrive in this beautiful 1975 Triumph TR6 is acting funny. It works when cold, but not when it warms up. So let's diagnose it without taking it apart.
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#Overdrive #TR6 #J-type - Auta a dopravní prostředky
Elin you should do a video comparing the A type and J type overdrives. Pros and cons, etc. lots of folks retrofit them in various TRs without OD and it would be good info.👍
That looks like Topaz, a beautiful 70s colour.
Great job Elin.
#rustybeauties
Great video,impressive diagnosis on the transmission problem.just keep doing what your doing and thinking and carry on.👍👍👍😎😎😎
You always seem to answer my questions as they come to mind.
Elon, I have run into exactly this problem before. Solenoid gets hot and the plunger won’t retract. I removed the snap ring That is in the end of the valve and removed the plunger and replaced all the seals and reassembled. No help! What I finally did was to stretch the plunger return spring slightly. Worked like a champ!
thanks! I will ask the owner if he wants to try that in the spring before he spends a fortune on a new solenoid. Thanks!
I just checked Amazon and there are a number of exhaust hoses for garage with "Y"s for dual exhausts available. You could just slip it under the door in the winter. Just a thought, Elin. Good to know that the solenoid was the culprit. Thanks for another very educational video, Elin!
Thank you for the video.
I agree to at least check the last seal inside the solenoid and clean it out. I think oil can get behind the plunger and cause some issues. I had sourced a ring from McMaster, I recall. Digging into that first is still cheaper than a solenoid when you can confirm it still is working some of the time.
Great bit of diagnostics and custom tool making Elin. I was shocked at the price of the J-Type overdrive replacement solenoid. The last time I purchased one of those it was £35.00 ( about 60 Canadian dollars). Mind you that was in the early 1990's and I expect inflation has been running riot since then judging by the price of my pint's of beer here in the UK 😅
Elin .... good to see you on the channel.... Just to be fair I'm the owner of an 64 Austin Healey 3000.... With an overdrive unit installed ... It,s interesting to see other cars with an overdrive unit installed. Not sure if you work on those cars , but it would be nice to see your input on those units as well.... Stay cool
Just a washroom in-line extractor fan (with square style eves ducting pipe) that slips under the garage door with a piece of wood to take up the rest of the gap works perfectly well for constant engine running/testing. Available at any Home supply store about $60
Fascinating... sounds like there's a short on the coil, what resistance did it measure? I love overdrives, shame they're not available today - I guess 8 and 10 speed auto boxes have replaced them.
2amps X 12volts = 24watts plus
for a part that size I am not surprised the temperature is that hot.
But of course if it fails, that means it is defective. (Not due to heat)
Very interesting!!?
Hi Elin,
I don't know if the oil level, now it is correct, would have an effect on the running temperature of the solenoid. It's a possibility that there MAY be enough flow through the solenoid plunger when engaged to draw enough heat away from the solenoid to keep it working correctly. Would be interesting to see if there is any effect. Just a thought.
I'm a long time Triumph owner, always enjoy your videos.
Two thoughts:
Thought one: Is the solenoid pulling the same current as a good working solenoid? If so then where is the heat coming from? It is just a simple coil that has to produce some heat. The more resistance the hotter it gets so you should be able to determine if the solenoid is suspect simply by measurment and that powersupply looks to be just the tool.
Thought two: Does the supply of oil through it keep it cool? Does low oil level mean no flow which allows it to overheat???????
There's clearly a big leak from that overdrive, it's all over the exhaust back there and the oil level is very low, which accounts for the overdrive issues
You could solve the problem of having to open the garage door in the cold weather to run an engine by cutting a round hole in a lower panel of the door and running a vent hose from the exhaust pipe of the car. I'm not sure but I bet someone makes that sort of hardware/hose for just that purpose.
I’ve looked into that multiple times. It is expensive. Especially the universal ends are expensive and I need 2 with a “Y”. Plus I am renting and making holes in the garage door won’t be very well accepted by the landlord :)
@@RustyBeauties That makes sense, not cutting holes in the landlord's door.. How about getting just a hose and then you could run it outside by just raising the door a few inches. I'm just cabitsing, Elin, I'm a fan and watch all you videos!
20 lbs is the correct pressure in direct while running
Winter / Spring rebuild / overhaul I think…
Diagnising?!
Sooner or later your going to need a lift.