Thread: Electrical issues with transmission? Missing 3rd gear

Results 1 to 6 of 6
  1. #1 Electrical issues with transmission? Missing 3rd gear 
    SE Level Member
    Join Date
    Oct 2018
    Location
    Atlanta, GA
    Posts
    2
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Chats
    0
    Ok so about a month ago I bought a 2004 Comp G with 84k miles from a guy who put a lot into it. About 2 weeks in though I notice that it's thumping a little when it upshifts and come to find out it's skipping third. I know I'm an idiot because I didn't check the fluid when I bought it, it slipped my mind and turns out it was burnt. I have to keep telling myself what's done is done

    Anyway it just suddenly happened, no problems leading up to it or anything. I decided to try a transgo shift kit since I'd seen it help someone, and while in there I found the 2-3 accumulator piston seal was torn and not working at all so I put in a new one and filled it up dex 6. Shifts better and doesn't thump between 2nd and 4th anymore. But still no 3rd From what I'm reading a bad clutch should've shown some slipping before it went out, and shouldn't bad solenoids usually affect more than one gear? When I downshift from 4th to 3rd for a split second it feels like it's going to third but then I'm pretty sure it's in second and had to rev match, cuz it would hop up to 4000~ rpm at 40mph. I get no codes, it basically just kinda acts like 3 doesn't exist. Could this be an issue with the PCM, or maybe can a solenoid only affect one gear? I just think if it was a bad clutch it'd have been slipping and would still be having issues, not just shifting like usual minus 3rd one day.
    Reply With Quote  
     

  2. #2 Re: Electrical issues with transmission? Missing 3rd gear 
    Killa Bee Scottydoggs's Avatar
    Join Date
    Aug 2010
    Location
    new jersey
    Posts
    39,995
    Thanks (Received)
    63
    Likes (Received)
    166
    Dislikes (Received)
    5
    Chats
    243824
    you lost 3 rd gear, same happened to me, just gone one day. sprags go out im told.

    being a tap shift, you need to find another tap shift tranny, or get yours rebuilt, they are a rare tranny, so finding a good used one is not easy.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
    Reply With Quote  
     

  3. #3 Re: Electrical issues with transmission? Missing 3rd gear 
    Turbo is the way to go. BillBoost37's Avatar
    Join Date
    Jul 2009
    Location
    W Spfld
    Posts
    26,833
    Thanks (Received)
    53
    Likes (Received)
    90
    Dislikes (Received)
    1
    Chats
    98246
    40 at 4000 rpm sure sounds like 1st gear to me. 2nd gear will take you upwards of 90mph. As for a solenoid, they control two gears. 3rd gear occurs when both solenoids are off (no power to either).
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
    Reply With Quote  
     

  4. #4 Re: Electrical issues with transmission? Missing 3rd gear 
    SE Level Member
    Join Date
    Oct 2018
    Location
    Atlanta, GA
    Posts
    2
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Chats
    0
    Quote Originally Posted by BillBoost37 View Post
    40 at 4000 rpm sure sounds like 1st gear to me. 2nd gear will take you upwards of 90mph. As for a solenoid, they control two gears. 3rd gear occurs when both solenoids are off (no power to either).

    Mistyped, meant 3000 oops 😂

    Quote Originally Posted by BillBoost37 View Post
    40 at 4000 rpm sure sounds like 1st gear to me. 2nd gear will take you upwards of 90mph. As for a solenoid, they control two gears. 3rd gear occurs when both solenoids are off (no power to either).
    Quote Originally Posted by Scottydoggs View Post
    you lost 3 rd gear, same happened to me, just gone one day. sprags go out im told.

    being a tap shift, you need to find another tap shift tranny, or get yours rebuilt, they are a rare tranny, so finding a good used one is not easy.
    Did you get yours rebuilt or sell the car? A sprag clutch shouldn't cause this issue from what I've seen. I'm thinking mine's a PCM issue since the solenoids all check out fine. I pulled it to check the model number to see about a replacement and I found a thick black wire with a white stripe was stripped and part of it exposed where the harness goes into the air box. I'm gonna patch it and and try and figure out what it grounds. The air box had a mouse nest inside it from sitting for a while so I'm not sure if it's from that or from when I pulled it to clean it. The issue def started sometime after I cleaned the air box so who knows

    If I swap the PCM do I have to try and find one with all the exact same numbers? I found a guy who sells them flashed but the model number isn't the exact same even though its a 2004
    Reply With Quote  
     

  5. #5 Re: Electrical issues with transmission? Missing 3rd gear 
    Killa Bee Scottydoggs's Avatar
    Join Date
    Aug 2010
    Location
    new jersey
    Posts
    39,995
    Thanks (Received)
    63
    Likes (Received)
    166
    Dislikes (Received)
    5
    Chats
    243824
    if you had mice eat a wire you'd have a code or two by now.

    i got a used tranny installed, then a few years later that one took a dump, i now have a full rebuilt tranny in it.

    dont see why you would need a new pcm. these trannys kinda suck. tap shift tranys are even more of a pita. if its the tranny you'll need a rebuild. or you need another tap shift tranny if you go used, nothing else works. now find a good used one...

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
    Reply With Quote  
     

  6. #6 Re: Electrical issues with transmission? Missing 3rd gear 
    Turbo is the way to go. BillBoost37's Avatar
    Join Date
    Jul 2009
    Location
    W Spfld
    Posts
    26,833
    Thanks (Received)
    53
    Likes (Received)
    90
    Dislikes (Received)
    1
    Chats
    98246
    I suppose it could be wiring, but like Scott said... you should be getting a code from it. Sprags don't throw codes
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
    Reply With Quote  
     

Similar Threads

  1. Electrical issues when wet
    By Kyle Dixon in forum 3.8L V6 Naturally Aspirated (L36)(L26)
    Replies: 2
    Last Post: 05-21-2013, 06:42 PM
  2. how would missing 4th gear affect 1/4 times?
    By Shiftingshaddow in forum General Tech Discussion
    Replies: 41
    Last Post: 02-02-2013, 08:59 PM
  3. missing gear
    By akvanden in forum 1997-2007 4 speed Automatic (4T65E) (4T65E-HD)
    Replies: 9
    Last Post: 02-01-2013, 07:54 PM
  4. Various Electrical Issues
    By BlackGT1 in forum General Tech Discussion
    Replies: 16
    Last Post: 09-21-2011, 01:25 PM
  5. Weird electrical/transmission/stall issues
    By Perry125 in forum General Tech Discussion
    Replies: 2
    Last Post: 09-19-2010, 10:16 AM
Tags for this Thread

View Tag Cloud

Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •