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Old 04-14-2014, 08:21 PM   #1
blanksaturn
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2001 SL2
Default Transmission repair...Success & Failure

Hey Brothers,

My latest Repair has succeeded to an extent and i was hoping you could help me clear up some malfunctions & trouble codes.

Symptoms: My 2001 SL2 was leaking fluid badly from the bell housing/engine seam due to a faulty pump seal.

Solution: i dropped the transmission and installed a new pump seal. while in there i noticed a crack on the dry side of the bell housing (the torque converter side) over the differential. I did not separate the bell housing from the gearbox to investigate the crack. then i reinstalled the transmission and the car started roughly and difficultly. When I shifted the car into gear it was very slow to engage and when it did it would slam into gear and the engine would stall immediately.

Results: I know of two things i did very wrong here: 1) i did not spin the torque converter to lock it in on the splines(didnt know any better). and 2) i didnt investigate the crack further which turned out to be a blown differential pin.

Solution: I dropped the transmission again, took the torque converter & bell housing including the trans pump and internal filter(as a single unit) from my 2001 SC2 and installed them to the gearbox from my 2001 SL2 I also welded the differential pin while i was at it. I reinstalled everything correctly (to the best of my knowledge).

Results: I now have 9 Trouble codes:
P0603: keep alive memory
P0706: Transmission Range Sensor Circuit Performance
P0733: 3rd gear incorrect ratio
P0734: 4th gear incorrect ratio
P1620: Throttle position sensor--> PCM ???
P1816: Transmission neutral safety circuit
U1000: ????

I also dont seem to have use of 1st gear. and several times over the last few days i will be cruising along and out of nowhere the transmission will go into neutral without the shifter moving and without warning or identifiable cause. im babying it! Lastly when i start the car almost every time now i have 1st gear...but ONLY 1st gear and reverse. then i use the shifter to shift to 3 or 2(either seems to accomplish a shifting event) and then back to D and magically, i have the rest of my gears but 1st is absent.

I definitely dont have another operational car at this time and cant afford for this one to be down any more. if you could advise me on a diagnostic/repair path to begin my journey, id greatly appreciate it!

Thanks for the invaluable wisdom!
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Old 04-14-2014, 08:45 PM   #2
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Default Re: Transmission repair...Success & Failure

Welcome aboard!
That's quite an assortment of codes you have there!
Have you checked all the TRS Fuses?
How about adjusting the Range Selector switch?
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Old 04-14-2014, 08:49 PM   #3
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Default Re: Transmission repair...Success & Failure

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How about adjusting the Range Selector switch?
First thing that came to my mind, reading this thread.
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Old 04-14-2014, 08:49 PM   #4
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Default Re: Transmission repair...Success & Failure

what are the TRS fuses and what/where is the range selector switch...how would i do so?
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Old 04-14-2014, 09:13 PM   #5
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Default Re: Transmission repair...Success & Failure

Quote:
Originally Posted by blanksaturn View Post
what are the TRS fuses and what/where is the range selector switch...how would i do so?
There's 3 Fuses in the Underhood Fuse Box . . .
http://www.saturnfans.com/forums/att...0&d=1364219173
See this for the Switch adjustment . . .
http://www.saturnfans.com/forums/att...1&d=1282876380

Last edited by Chazberry; 04-14-2014 at 09:18 PM.
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Old 04-14-2014, 09:29 PM   #6
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Default Re: Transmission repair...Success & Failure

thanks for the links chazberry. i can easily identify/check those fuses(duh) and as far as the the diagram for the transmission switch, im not sure what the box in the upper left is? care to expand on that? not much for the electrical side of things
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Old 04-14-2014, 09:30 PM   #7
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Default Re: Transmission repair...Success & Failure

and just applying the ohm meter and reading the readings from it...how do i then adjust it?
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Old 04-14-2014, 09:38 PM   #8
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Default Re: Transmission repair...Success & Failure

trs fuses checked out just fine
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Old 04-14-2014, 09:43 PM   #9
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Default Re: Transmission repair...Success & Failure

Quote:
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and just applying the ohm meter and reading the readings from it...how do i then adjust it?
You are going to rotate the whole Switch until you see continuity when the shifter is in D4, then lock it down.
http://www.saturnfans.com/forums/att...9&d=1349765392
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Old 04-14-2014, 09:56 PM   #10
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Default Re: Transmission repair...Success & Failure

ok first: what is continuity. second i thought that apparatus was fixed with the long skinny bolts and 15/13MM heads on them how then can it rotate for you to discover continuity?
sorry like i said, electrical is not my fortay!
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Old 04-14-2014, 10:06 PM   #11
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Default Re: Transmission repair...Success & Failure

Quote:
Originally Posted by blanksaturn View Post
ok first: what is continuity.
That's equivalent to zero ohms - or very close to it.
When your meter leads are apart - you have an 'open' or infinite resistance.
When you touch them together, you have continuity or zero resistance.
The Switch has contacts inside that will connect your leads together when it is positioned correctly.


Quote:
Originally Posted by blanksaturn View Post
second i thought that apparatus was fixed with the long skinny bolts and 15/13MM heads on them how then can it rotate for you to discover continuity?
If you loosen those bolts, the whole Switch will rotate clockwise or counter-clockwise some number of degrees. About 29:30 in this vid . . .
https://www.youtube.com/watch?v=QUBv...ature=youtu.be

Last edited by Chazberry; 04-14-2014 at 10:17 PM.
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Old 04-14-2014, 10:13 PM   #12
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Default Re: Transmission repair...Success & Failure

oh REALLY?!?!?! i thought it was a fixed apparatus, so i simply slapped it back on there and gave the bolts a few quick turns HAHAHA where exactly should i be placing the hot and negative probes from the ohmmeter?
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Old 04-14-2014, 10:19 PM   #13
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Default Re: Transmission repair...Success & Failure

Quote:
Originally Posted by blanksaturn View Post
oh REALLY?!?!?! i thought it was a fixed apparatus, so i simply slapped it back on there and gave the bolts a few quick turns HAHAHA where exactly should i be placing the hot and negative probes from the ohmmeter?
Well that probably explains part of your troubles!
There's 2 terminals sticking out of that switch - one has a wire. Pull that wire off. Connect your meter to those terminals - doesn't matter which lead goes where.
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Old 04-14-2014, 10:23 PM   #14
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Default Re: Transmission repair...Success & Failure

Im convinced that this has alot to do with my troubles now thank you so much. can i expect that to correct all or most of my trouble codes?
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Old 04-14-2014, 10:25 PM   #15
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Default Re: Transmission repair...Success & Failure

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Im convinced that this has alot to do with my troubles now thank you so much. can i expect that to correct all or most of my trouble codes?
Well, hopefully the P0706. We'll have to see about the others.
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Old 04-14-2014, 10:30 PM   #16
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Default Re: Transmission repair...Success & Failure

That tab without the wire is just a ground, use any other ground point if it isn't handy to get two meter probes down there.
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Old 04-14-2014, 10:33 PM   #17
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Default Re: Transmission repair...Success & Failure

thanks fellas, will check all that out after work tomorrow and report back! sayonara
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Old 04-14-2014, 10:34 PM   #18
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Default Re: Transmission repair...Success & Failure

Quote:
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That tab without the wire is just a ground, use any other ground point if it isn't handy to get two meter probes down there.
Hi Bill. You're in good hands now - I'm going to bed.
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Old 04-15-2014, 12:35 AM   #19
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Default Re: Transmission repair...Success & Failure

Uhhhmmm, wouldn't TRS adjustment have been in whatever written procedure one would follow doing such an operation?


Just sayin....
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Old 04-15-2014, 05:57 AM   #20
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Default Re: Transmission repair...Success & Failure

WRITTEN PROCEDURE?????? hahahahah this was my first time taking a transmission out much less replacing anything other than valve body or solenoids! So i searched what i could on the internet(to no avail) and simply dropped and cracked open the proverbial egg lol. learned alot so far: mostly how much of a pain in the @$$ automatic transmissions are.
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