When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
90 F150 2wd M5r2 trans. I have fluid leaking out of where the speedo cable goes into the sensor, I pulled it out assuming there’s O ring on the cable, but didn’t see one. Do I have to replace the whole sensor to fix it? Or did it deteriorate completely?
If it is not there you could try sourcing just that o-ring by trial and error. No idea if there is a spec. for it.
Perfect!! Thank you as always!! I did not see that in there when I looked, but may have missed it. I have an assortment box of o rings I’ll try out. Can’t be worse than it is currently. If I can’t get it to stop, I’ll just replace the VSS.
That is the cable O-ring shown in the photo (it's there to prevent dirt from getting into the VSS from the cable side)
There is a second one inside the VSS on the other side, keeping fluid from getting past the gear, that's the one you need to replace
Well, I was going to pull it again today to see which seals I could find and replace, but the housing plastic has a nice big crack in it! New one will be here tomorrow. Thanks again @rla2005 and @manicmechanic007 for the help!
That is the cable O-ring shown in the photo (it's there to prevent dirt from getting into the VSS from the cable side)
There is a second one inside the VSS on the other side, keeping fluid from getting past the gear, that's the one you need to replace
Where is this mystery o-ring located?
Originally Posted by 1Butcher
Comments like this is why you should listen to what this guy says.
This is why I don’t listen the majority of the time. The o-ring in my picture seals the sensor to the trans/ transfer case housing. The o-ring in rla’s picture seals the sensor to the cable.How do you replace the o-ring manic mentioned that is supposedly inside the sensor housing?
This is why I don’t listen the majority of the time. The o-ring in my picture seals the sensor to the trans/ transfer case housing. The o-ring in rla’s picture seals the sensor to the cable.How do you replace the o-ring manic mentioned that is supposedly inside the sensor housing?
I know that one definitely wouldn’t be the cause, there’s no leakage where the housing touches the case. I was guessing he meant a second one further in from RLAs, but when I went to go look, I noticed the plastic piece has a crack from top to bottom… not sure what caused that, but it’s getting replaced tomorrow! Maybe I’ll dissect the old one to find it.
When I did the frame swap a couple years ago I discovered that the shaft inside the sensor was bent. I can’t believe the speedometer was work ing normally ie without bouncing all over the place. Even with the inside bent it didn’t leak
a drop. I used a replacement from NTK. Now that I think about, I would think that there shouldn’t be so much transmission fluid in the tail shaft for it to be going up the speedometer cable. Is the transmission overfilled?
When I did the frame swap a couple years ago I discovered that the shaft inside the sensor was bent. I can’t believe the speedometer was work ing normally ie without bouncing all over the place. Even with the inside bent it didn’t leak
a drop. I used a replacement from NTK. Now that I think about, I would think that there shouldn’t be so much transmission fluid in the tail shaft for it to be going up the speedometer cable. Is the transmission overfilled?
No, I check it every two months. Flat surface and pull the plug, it never leaks out, but has been pinky tip reach when I put it in the hole. It seemed odd to me as well that it would be leaking from where the cable goes into the sensor as well, that’s why I suspected an O ring. When I pulled it, I didn’t find one. That’s what prompted the initial question. Now, what the hell hit it and cracked the plastic housing in half since then, I would love to know. My output seal (previous thread) and the sensor housing will be here tomorrow and get replaced. Then I’ll be looking for the “inner” o ring as well!
Well gentleman, @manicmechanic007 was indeed correct. There is a tiny o ring that goes between the housing and the gear that’s built into the housing that the cable itself slides in. No clue how you would change that! I couldn’t get a picture of it, but it’s there, on the new one anyways. It was MIA on the old one. Now on to my next snafu if you will…
attached photos are of the driven gear that was on the VSS. Clearly shot to hell! The missing teeth are somewhere in the transmission.. being that there is no pan or filter, are those tiny pieces of plastic worth draining the trans, pulling the top cover and flushing it out or would the group agree that the tiny plastics would disintegrate and not cause harm? Who knows when they broke. I can tell you the gear is around 6 months old. The fluid has only 5k miles…
No genius
I've just has several leak is all, and the new ones were only about 30 bucks back in the day
It never looked like to me there was a "serviceable" internal o ring
