Where is the LR Sensor located on the tanny?

SinfulNeon · Post by **SinfulNeon** » Thu Jul 17, 2008 8:33 pm

Hi long time guys, okay so my neon hasnt been running for a little while or I should say it can run but the tranny doesnt shift and I found out its in limp mode, the error code I have is P0750 which I was told relates to the LR solenoid on the tranny.

I was then told to check the wiring starting at LR solenoid and trace it back looking for any broken or frayed connections, if the wiring checks out then its probably the LR solenoid and it needs to be replaced.

Okay so here is my question and if it has been answered already then my bad I looked around and couldnt find it but okay here goes, can someone please tell where on the tranny is this LR solenoid located so I know where to look for it? if any one has photos that would be great to and also when telling me where it is could be as detailed as possible not like say oh its at the bottom of the tranny or something similar.

Thanks guys you have always been very helpful here.

Donkeypuncher · Post by **Donkeypuncher** » Fri Jul 18, 2008 3:53 pm

It's on the bottom of the tranny

I'll look and see if I can find out which wire is for the L/R solenoid. Hope this helps.

REMOVAL

(1) Disconnect battery negative cable.

(2) Remove air cleaner/throttle body assembly.

(3) Disconnect solenoid/pressure switch assembly
connector.

(4) Disconnect input speed sensor connector.

(5) Remove input speed sensor (Fig. 278).

(6) Remove three (3) solenoid/pressure switch
assembly-to-transaxle case bolts (Fig. 279).

(7) Remove solenoid/pressure switch assembly and
gasket (Fig. 280). Use care to prevent gasket material
and foreign objects from become lodged in the
transaxle case ports.

Fig. 278
Fig. 279
Fig. 280

INSTALLATION

(1) Install solenoid/pressure switch assembly and
new gasket to transaxle (Fig. 280).

(2) Install and torque three (3) bolts (Fig. 279) to
13 N·m (110 in. lbs.).

(3) Install input speed sensor (Fig. 278) and torque
to 27 N·m (20 ft. lbs.).

(4) Connect input speed sensor connector.

(5) Install solenoid/pressure switch 8-way connector
and torque to 4 N·m (35 in. lbs.).

(6) Install air cleaner/throttle body assembly.

(7) Connect battery negative cable.

(8 If solenoid/pressure switch assembly was
replaced, perform TCM Quick Learn procedure.
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES/TRANSMISSION CONTROL
MODULE - STANDARD PROCEDURE)

SinfulNeon · Post by **SinfulNeon** » Fri Jul 18, 2008 5:01 pm

oh wow thanks that really does help.

03SXTGUY · Post by **03SXTGUY** » Fri Dec 30, 2011 10:09 am

bump for how-to section!

This just came in handy being that I need to replace my solenoid assembly - thanks bud

Just one question - how much ATF will you lose replacing this assembly, if any? I'm going to replace my tranny filter/gasket/pan while I'm at it - with the new Dorman pan that comes with an easy-access drain plug for future changes - so just trying to determine if I must do the solenoid before/during the filter exchange or if I can do it afterwards w/o losing any of my new fluid.

Post by **occasional demons** » Fri Dec 30, 2011 11:56 am

I would clean it all off, to keep grit from falling in there, pressure wash at the local car wash will do, then do it all at once.

I don't think you would lose too much fluid, but may as well do the solenoid pack first, so any oil that runs down will be cleaned up before the pan is installed. Makes it easier to tell if either one is leaking afterwards.

03SXTGUY · Post by **03SXTGUY** » Fri Dec 30, 2011 1:10 pm

Great advice, Bill, Thanks!

I found these videos on the tube, VERY helpful - straight forward how-to videos on a 2002 Dodge Neon (2000-2005)

Removing Solenoid Part 1

Removing Solenoid Part 2

Installing Solenoid Part 1

Installing Solenoid Part 2

To answer my above question, yes, you can remove the solenoid first without losing much ATF - just lay a piece of cardboard or something on your garage floor to catch any minor drainage

Addendum to Donkeypuncher's post: It is an 8mm bolt to disconnect the solenoid assembly wire connector, and (3) 10mm bolts to remove the solenoid assembly up and off of the transmission.

03SXTGUY · Post by **03SXTGUY** » Sat Jan 07, 2012 6:24 pm

Just completed the replacement of my transmission solenoid today. Being a newbie to any transmission work but not new to working on cars, I would rate this job a 4/10. The majority of the time (1 hr 30 min approx.) was spent determining/finding the right tools in my garage and scraping the old stuck-on solenoid gasket off of the transmission (a real PITA). The videos were of fantastic help, I encourage you to watch them before attempting this DIY.

My new solenoid

(HINT: It's the one clean thing in the pic haha My old solenoid was leaking, hence the need for replacement)

You will lose minimal fluid but if replacement is needed, be advised to only use Mopar ATF+4 (1 Gal. at Dodge cost me $35).

After replacing the solenoid, I gave the transmission a flush, also replacing the old pan with a new Dorman stainless steel pan that includes a drain plug for future changes

The filter, as well as the pan gasket were also replaced.