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R154 plugs - speedo, reverse, rear speed sensor

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Old 07-10-08, 03:43 PM
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sc1jzgte
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actually i think it would be going 58 as opposed to 62 with the w58 sensor.. but if you really think about it, it shouldn't matter..... that would change if a MK3 was reading a w58 sensor... but my car was made to read a w58 sensor.. so in a sense it may be the exact same as on the w58 for me... "perfectly off"..
Old 07-11-08, 02:15 PM
  #17  
sc1jzgte
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Here is my $160 rear speed sensor fill in, I took a 13mm short socket and got it welded to a mounting plate, just going to put some gasket sealant on it and voila.. plugged.
Attached Thumbnails R154 plugs - speedo, reverse, rear speed sensor-i-see070.jpg  
Old 07-11-08, 02:24 PM
  #18  
1uzsupra
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Originally Posted by sc1jzgte
I am trying to understand what the rear speed sensor is. I am not talking about the speedometer driven gear. Please take a look at the diagram below and study that there are 3 major attachments to the tranny.

1.Back up light switch
2.Speedometer driven gear
3.Rear speed sensor

My conclusion to this is
1. Obviously for the reverse lights
2. Mainly for the MPH reading on the spedometer in the cluster?
3. ???, wild guess..cruise control,???

My issue is I have a gaping whole where #3 is. and i cant start my car with out that hole plugged because i cant put the fluid in with a hole in tranny. That part is $160, so does anybody know:

What it does if its not used and just plugged?
Are there alternate parts to use I can look for?

Also since we are on this, the speedometer driven gear, is that the part that Craaazy meant he made the w58 one work? and 2jzlex said he had a solution?

Then the reverse light.. i have an auto 1jz ecu... i read its just supposed to plug and play? it didnt for my w58, i will find out on this one i guess.

http://www.cygnusx1.net/Supra/Librar...ection=MT&P=49

Thanks
To help clarify, although a bit late, #3 in your list is used in the MKIII Supra's ABS system. There are two sensors, one for each front wheel, and then this third sensor which covers the rear wheel speed.
Old 07-11-08, 02:30 PM
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2jzlex
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You can buy rubber expandable plugs from auto part stores. All different sizes, they are usually in the self help aisle for those quick fix situations but they work really well. It's just a circular piece of rubber that expands when you turn a screw inside of it. It seals itself good though.
Old 07-11-08, 02:59 PM
  #20  
sc1jzgte
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always gota go the extreme and difficult way!!
Old 08-12-08, 12:40 AM
  #21  
madmax98
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Why do i think the rear one is for ABS!!! hmmm, so how did the project go??
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