Tranny issues...PLEASE HELP.

[Dpwhitehead1]

there should be three things plugged into your tranny. neutral position sensor, reverse sensor, and speedo sensor. the first two are on the front side of the tranny. The pic you posted with that sensor, it was either the neutral position or reverse sensor, don't remember which. The other one is on the backside more toward the starter/diff. if you can count three things plugging in, you have the sensor hooked up.

I know you have the sensor, I don't even know if it can be unplugged from the wiring harness. You had to have the sensor to have a working speedo before. You didn't swap the whole MSP wiring harness, did you?

no. stock harness.

 

[Dpwhitehead1]

also, i found this. i just ordered the gear. http://www.mazdas247.com/forum/showpost.php?p=892975&postcount=5

but honestly, i don't get what would need to be machined to work this out.

 

[Kooldino]

4


http://www.mazdas247.com/forum/showthread.php?t=60567&highlight=msp+speedo+sensor

i found that also. they say nothing about having the lsd machined..just the pink speedo gear.pressed on..which he did evidently by hand...

If you have a 4 lug hub, then I'm pretty sure you don't have ABS.

And if you don't have ABS, I think you're stuck with opening up the trans.

 

[CustomMSP]

The MSP Tranny doesn't have a speedo sensor in the tranny, it's just a plastic plug that's formed like the speedo sensor. The MSP gets its speed reading from the ABS sensors on the front knuckles. There are Teeth on the C/V Shafts that the Magnetic ABS Sensor counts as the C/V Shaft rotates.

 

[Dpwhitehead1]

If you have a 4 lug hub, then I'm pretty sure you don't have ABS.

And if you don't have ABS, I think you're stuck with opening up the trans.

yeah. i am pretty sure of that. i bought the speedo gear
but i'll need to know how/what needs to be machined.
cuz it sure didn't look like it really needed it

 

[Dpwhitehead1]

The MSP Tranny doesn't have a speedo sensor in the tranny, it's just a plastic plug that's formed like the speedo sensor. The MSP gets its speed reading from the ABS sensors on the front two tires. There are Teeth on the C/V Shafts that the Magnetic ABS Sensor counts as the C/V Shaft rotates.

right, but it can be fixed w/ a speedo gear put on the lsd correct?

 

[CustomMSP]

right, but it can be fixed w/ a speedo gear put on the lsd correct?

I don't see why it wouldn't work if you insert that pink speedo gear and get a speedo sensor. You would need the LX ecu, which you already have. I know a person with an MP3 that did exactly that and his is working fine. However, that person installed a Quaife with the speedo gear instead of the MSP LSD. It's the same deal though.

 

[Dpwhitehead1]

I don't see why it wouldn't work if you insert that pink speedo gear and get a speedo sensor. You would need the LX ecu, which you already have. I know a person with an MP3 that did exactly that and his is working fine. However, that person installed a Quaife with the speedo gear instead of the MSP LSD. It's the same deal though.

yes. however, i believe i already have the speed sensor..i don't have abs.

 

[Kooldino]

yeah. i am pretty sure of that. i bought the speedo gear
but i'll need to know how/what needs to be machined.
cuz it sure didn't look like it really needed it

The diff needs to be machined so that the pink gear will fit onto it.

 

[Dpwhitehead1]

The diff needs to be machined so that the pink gear will fit onto it.

im scared to ask you dana..but..how much..for you to do all this?the 5th gear and the machining..etc.

 

[Kansei]

Yeah you definitely have the speedo sensor somewhere.. unless it does unplug from the harness and the sensor stays on the tranny when pulled (I don't remember from when I pulled my own tranny in January, I was way busy trying to get my car running so I rushed things haha), in which case you probably don't have it anymore and have a disconnected plug sitting near your tranny.

 

[Dpwhitehead1]

Yeah you definitely have the speedo sensor somewhere.. unless it does unplug from the harness and the sensor stays on the tranny when pulled (I don't remember from when I pulled my own tranny in January, I was way busy trying to get my car running so I rushed things haha), in which case you probably don't have it anymore and have a disconnected plug sitting near your tranny.

i'll check that out. hopefully i can get this ****** running again correctly..soon.

 

[CustomMSP]

The diff needs to be machined so that the pink gear will fit onto it.

Even the stock MSP LSD?

 

[CustomMSP]

yes. however, i believe i already have the speed sensor..i don't have abs.

The Speedo Sensor is located inside the LX Tranny that you no longer have based on what I've read in this thread.

 

[Prodigy]

I didn't feel like reading the entire thread but the MSP tranny does not have a speedo gear, it reads from the abs sensor.

The easiest thing to do is do is to either not use the speedo or
pull the the trans and install a speedo gear + speed sensor on the msp tranny.

OR
-find the msp abs sytem thing.

 

[Dpwhitehead1]

I didn't feel like reading the entire thread but the MSP tranny does not have a speedo gear, it reads from the abs sensor.

The easiest thing to do is do is to either not use the speedo or
pull the the trans and install a speedo gear + speed sensor on the msp tranny.

OR
-find the msp abs sytem thing.

hmm..speed sensor..and how would that be installed and where?

 

[Prodigy]

The diff needs to be machined so that the pink gear will fit onto it.

No it doesn't.
A dremel to shave a little bit of the speedo gear works.

It's worked well for Rogue's msp LSD when I did his transmission

 

[CustomMSP]

hmm..speed sensor..and how would that be installed and where?

All you need to do is remove the dummy "sensor" on the top rear side of the tranny and drop the real speed sensor in. Don't forget you still need to crack the tranny open and insert the pink speedo gear though

 

[Dpwhitehead1]

All you need to do is remove the dummy "sensor" on the top rear side of the tranny and drop the real speed sensor in. Don't forget you still need to crack the tranny open and insert the pink speedo gear though

yeah. i already ordered the gear!!woot.

umm.. can you possibly take a picture for me of where this thing is?

 

[Kansei]

it's on the backside, just source a speedo sensor and worry about it when you have the tranny out. the plug will probably be fairly obvious.