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Here is a little DIY I did on my transmission sensors for my 2001 MDX.

here's a link if you are looking for the 03-06 MDX DIY
'03-'06 MDX - 3rd & 4th Gear Transmission Switches / Sensors DIY - AcuraZine Community

After doing quite a bit of reading, I found that replacing the 3rd and 4th gear
transmission sensors might help my transmission problems. And here's what I found out...

My transmission was shifting wasn't always shifting smoothly and on the way
home from a two hour road trip my RPM's start going berserk. I had the
flashing D light, the whole works and so I when I got home it got parked for a
few days. So after a couple of days I take it for another drive.

The problem seems to have gone away, until it gets warmed up.... after about
5 minutes on the highway, same problem again. That being said, I'm not in
the best position financially at the moment so I sought any quick fix would be
a well needed miracle.

BTW, this was after I got a quote from H&A transmission for $2,700 minus a
$500 core refund. Which for a completely rebuilt tranny, that isn't as bad as
what I was expecting.

But anyway I found out that replacing the sensors was like putting a band-aid
on a wound that needed stitches. I mean it helped but the problem is still
there.

So hopefully this helps your decision making when looking to drop $100 on
sensors. But if you think they may make a difference for you, It was a
ridiculously easy job.

Here's the process:

1. Buy Switches and Gaskets from www.acuraoemparts.com

x1 3rd Gear Pressure Switch (28600-P7Z-003)
x1 4th Gear Pressure Switch (28600-P7W-003)
x2 sealing gasket (90471-PW7-A00)




2. Remove the driver's side front wheel and here's what you see.
The Red Circle is where the 3rd Switch is located and the Yellow
circle shows the location of the 4th.




3. In order to get to the 3rd Switch you must remove that black
plastic think by removing the 2 bolts circled.




4. In order to get to the 4th you must remove some of the inner tire
well plastic shielding. Its really easy to do so. This pic shows the new
sensor already installed and you can see how close it is to the 3rd.




5. And lastly don't take to long putting in the new switches once the
old ones are removed to avoid leaking too much transmission fluid. I kinda
took my time and some leaked out but not too much. Also be sure not to
over torque your switches!





I hoped this helped everyone considering doing this to their car.
This feel more like a preventative thing to do rather than after
tranny is gone.
 

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Fwiw...

By now we are all familiar with the history of these trannies, and it's not good. How many miles on your MDX? How often have you changed the tranny fluid? After removing the pressure switches was there anything obvious by looking at them that they might not have been functioning properly. Have you consulted Acura to see if they can assist you on the tranny replacement costs?

Thanks for your time but a lot of folks are probably very interested in how your tranny works from now on so please keep us posted.
 

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Discussion Starter #3
Rotorray

It's got like 151,000.
Yeah I didn't get anywhere with Acura.
I've only owned the car for about 6 months but had the fluid changed
when I first got it. I'll keep the thread updated with how it runs after I test it more.
I'm going to have to do something more drastic soon...
 

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Discussion Starter #5
midnightMDX

I was just wanting to make sure everyone was in the right place. I wouldn't want someone taking apart their intake on an 01. It happens to me all the time
 

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Great write up, I have been all over Acurazine to figure out how to do this on my 2006 TL and just started to research how to complete on my 2002 MDX...this thread would indicate that both setups are almost identical with a slight variation in part #'s thanks!
 

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Acura2001MDX

Any update to your post from August. I just purchased a used 2001 that had Acura service records from new until March 2010 - and - I had it inspected at my local delaer.

After driving for a few days I have the same symptoms when driving for 45+

Need a solution for reliability. Please advise on your experience
 

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Just what I was looking for! Thank you!:29:
 

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If you have the 2001, AND they have replaced the tranny, also ask if they replaced the TSB required extra tranny fluid pump. It seems they have been possibly forgetting that, and allowing the replaced tranny to wear even faster than the original one with it.
 

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Also, for those who have changed these switches, has this solved the problem? How much longer will the trans last before it decides to call it a career?
 

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My 2001 MDX started slipping at around 156k miles. I didn't get the code read. I just figured I'd try it to see if it works...and it did for 2k miles.
 

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I start up my car, put it in d5, Car accelerates then when the rpm goes up to 2000 rpm the car still runs but there is no torque it is as if i but in neutral were the car does no accelerate even when i push the gas.
 

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Hi Amdx,

Thanks, I saved again following your detailed write up. I have a 2002 mdx with no reverse, blinking D5 and I had to limp home , getting of the freeway using the service road when it starte do high rev on me.

Just test drived and it's smooth, a cool $700 saving.

Ss
 

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Hi Amdx,

Thanks, I saved again following your detailed write up. I have a 2002 mdx with no reverse, blinking D5 and I had to limp home , getting of the freeway using the service road when it starte do high rev on me.

Just test drived and it's smooth, a cool $700 saving.

Ss


hey what was your car doing ..i have the same issue now !1 but i clear the codes and it worked again but im haviing really hard shift thru low gears ant low rpms ! well let me know ..message me
 

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Hi Amdx,

Thanks, I saved again following your detailed write up. I have a 2002 mdx with no reverse, blinking D5 and I had to limp home , getting of the freeway using the service road when it starte do high rev on me.

Just test drived and it's smooth, a cool $700 saving.

Ss
SilverShadow,

It has been more than a year since you replaced the transmission sensor, is your transmission still running OK after you replaced them?
I just ordered both the 3rd, and 4th gear sensor, plan to replace them tomorrow, just want to know how long they last.
 
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