I replaced this sensor and got my car back to working. Without it, my car would not shift into gears higher that’s first.

This new replacement lasted only like a month.

I ordered another one and again car is working. Upon inspection of the replaced one I noticed that the metal tip of the sensor was lightly rubbed, but noticeably more than the OEM I had replaced a month earlier.

My question to the gurus here is: is this rubbing of the sensor tip normal? Could this rubbing be a reason the sensor is going bad?

From what I understand, the sensor is sending a magnetic pulse and no touching is needed.

My car left me stranded in the middle
of the night because the sensor went out and now I don’t trust my car in that the sensor will give out.

Please comment

Vince


Replacement that went bad. Showing rubbing.
ya

 

You're correct - the Hall effect doesn't require contact - just a very small clearance.

Can you take a photo down the hole (camera scope probably needed) to see it there are witness marks on the rotor?

The sensor height shouldn't be adjustable (unlikely) so I cannot fathom why it should foul, unless the rubber seal is wrong.

If your output shaft's flapping about, that would be very ominous.

 

Do you have this Washer 28811-RJB-000?

 

FAR more likely it's got lost!

 

I wanted to come back here and state you were correct about the washer. I had it on top of the sensor facing down. But I did switch it to be between sensor and transmission as shown. That makes sensor farther away from the guts of the transmission and it does not touch anymore.
Thanks for your reply.

 

You are welcome.

 

What kind of washer I’m having the same issue and where does it exactly go on the sensor? Do you gap the bolt with the washer that tightens it or place it directly underneath the magnet part on the sensor?

 

All the information you need is in altair47's #3 post, including the part # for said sensor pick up washer.

Does the hole in the pick up washer look more suitable for the bolt shaft size above or is it the size of the sensor opening in the trans case?

 

I am a noob with this lol but yes looks the suitable size for the opening in the trans case. If so do I just install the washer right around the tip of the metal part or how so, do I go further up or further down on the metal part with the washer or does it sit right on the edge then is installed directly in from there?

 

Why do you need to install a washer? Where did yours go?

 

When the problem happened I didn’t know of a washer that’d be needed for the install of a replacement output sensor till I saw these forums while researching the problem and seeing that someone else’s sensor got scarred up too from an improper gap.
I even got it working without a gap unless the washer is still in there and created a slight gap but then 15-20 mins later after testing it failed and speedo died. Possible washer is in the trans housing and can fish it out/re-use for new oem sensor that I ordered?
For install I just fit the washer right on the circumference of the sensor facing down close to tranny housing?
Sorry to ask so much I just wanna get my RL going I love her and just got her new arm rest leather

 

Can you provide a pic of the washer pls?
I’ve never seen it and finally ordered one.
If you could also provide an example pic of your sensor showing where your o ring is placed with the washer on the sensor clarifying how it should look before installing into the tranny housing, that’d be appreciated!

 

Hey if you know the size of the washer/amount of clearance needed between sensor and tranny I’d love to know cuz the size wasn’t listen in the description for the oem washer I ordered it and I wanna try gapping with a same size random washer before I try oem to potentially save money.

 

The referenced washer, as shown on the parts exploded view as “c” is a metal clip that goes between the transmission body and the sensor, held in place by the bolt. It’s not a washer that goes in the sensor hole. The clip’s flat side goes to the transmission body side. The clip raised side goes around the sensor’s bolt hole.

Also only the sensor that is closest to the motor has this metal clip. (There are two shaft speed sensors)

I also had the second sensor scratched by the transmission gear and had to place a thin washer in between the transmission and sensor and so far sensor has not been damaged. Washer has to be like a millimeter thick..i had tried like a 2mm one and would not shift. I went through 4 of these sensors going bad and 2 damaged. For the four i have not idea why they would go bad, the other 2 they were physically damaged. One had the metal tip chew by the internal gear. Probably still inside the trans. oil pan. One of the 4 was Honda brand but the rest of all sensors were from Ebay (China) for $20. One of those is still working good. I got an extra in my glove box as emergency back up.

 

Hey thank you so much for this info, really appreciated and very helpful!

I went through 2 and just ordered an oem one from Acura but I have the “metal clip” as you stated coming in first so I would love for that to be the fix and have this oem as a spare one if the aftermarket sensor isn’t already marked up.

Also the “washer” I assumed looking at B in the diagram is just the o ring?

 

The blue arrow points to the direction of the bolt
The yellow arrow points to the O-ring (B).
The red line indicates the side of the sensor flange the 'washer' (C) gets placed before inserting the sensor into the trans case.

If you install all the sensor components properly it should look like the picture below.

 

Thanks a lot for your recent post that was very clear so when my part comes in tomorrow I’ll be set

Replying to this message again because you said you gapped with a random washer too that’s 1mm thick, did you gap the bolt or place it between sensor and tranny housing inside?

 

Just wondering so did you add a washer plus the oem metal clip or are you just saying that both ways work to gap it?

 

Don't you want to give this job to a specialist? It’s just that everything has already been explained to you 3 times and you still don’t understand how it works. I don’t want to offend you, but something tells me that if you don’t understand these basic things, then you will definitely break something when you install this washer. It is logical that if the sensor touches something inside, then you need to move it away from the transmission, but if you put a washer under the bolt head, the sensor will not move anywhere.

 

No no I understand haha. It’s cause the way I read and explain things is more in a less “mechanical” way. I do get that the proper clearance needs to be made so the sensor tip doesn’t touch the gear and scar in the tranny housing. I just read it wrong assuming you did it two ways, (1) you gapped it with a 1mm washer on the bolt, and (2) you just bought the oem metal clip and gapped it on the bolt.

Because in the reply it said he placed a mm washer
“in between transmission and sensor” so I assumed oh he placed it on the actual tip of the sensor between the tranny housing and not on the bolt to tighten that’s where I confused myself cuz then the washer would obviously fall into the tranny if that was the case. Sorry for all the misunderstandings you guys are such amazing help!

 

When I talked about the 1 or 2 mm washer is for the other shaft speed sensor (there are two speed sensors) the one farthest from the engine. That sensor does not take any washer. But because my transmission was touching the sensor (it chewed the metal tip off of one) I needed to separate the sensor just a bit from the trans body so at first I added a 2mm washer/spacer but that didn’t work because when I took my car for. A test drive the trans wouldn’t shift to higher gears. So I then removed the 2mm washer and replaced it with a 1mm washer and then took it for a test drive and that worked, my car is now shifting correctly up to now.
I don’t know why that gear that the sensor monitors is moving so much as to cause damage to the sensor. But as I’ve adjusted the sensor, it has been working good.

Sorry for any confusion…

Please let us know if your sensor (especially the one farthest from the engine) is also been rubbed by the internal gear of the transmission. I want to know if it’s just mine doing this.



Replacement that went bad. Showing rubbing.

 

@VCANTU are you using proper Honda sensors, or do you think these are just none-genuine parts that don't fit properly ?

I find it hard to believe the genuine sensor would have alignment issues unless there is some sort of shim-procedure in the workshop manual.