A4 Automatic Trans won't down shift
Thread Starter
Drifting
Joined: Aug 2006
Posts: 1,719
Likes: 1
From: Florida
St. Jude Donor '07
A4 Automatic Trans won't down shift
I have a 1998 A4 with 147,000 miles. After driving in a parade at Cocoa Beach, Fl with stop and go for 1 hour, the automatic temp was 212F. Driving home the automatic was stuck in 3rd. From a stop light it would start out in 3rd. I have to manually shift it 1,2,3,drive. On the highway it will not kick down other that out of overdrive. The today temperature is now OK 160 at highway speed (outside temp 65 - Florida). I have experience in rebuilding a 700R4, but never these new electronic controled automatics. Anyone have any suggestions? Need help.
Drifting
Joined: May 2004
Posts: 1,904
Likes: 2
From: London(UK)/Troyes(France)
I guess your tranny is dead.
There is only one way to go:
www.rpmtransmissions.com
Very very high quality trannies, very strong and great people to deal with! You cant go wrong
There is only one way to go:
www.rpmtransmissions.com
Very very high quality trannies, very strong and great people to deal with! You cant go wrong
Thread Starter
Drifting
Joined: Aug 2006
Posts: 1,719
Likes: 1
From: Florida
St. Jude Donor '07
No codes. I have to manually shift, it does not slip. It won't go into 1st. If I manually shift it, I can start in 2nd. Manual up shift and down shift required. CAN THIS BE THE COMPUTER. WHERE IS THE COMPUTER FOR THE TRANS?
Supporting Tuner
Joined: Sep 2004
Posts: 51,896
Likes: 39
From: ================== Houston, Texas www.englandgreen.com ================== Necessary Evil™ __________
CI 6-7-8-9-10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14
Get a Rodney (RPM) tranny
Drifting
Joined: Oct 2003
Posts: 1,540
Likes: 0
From: bloomfield nj
i think your problem is electrical,not mechanical and i don't think it's pcm related.almost sounds like the pcm is not seeing drive.
either way,be it mechanical or electrical,you should have a fault stored.try driving it and checking for faults WITHOUT turning the car off and see if you have any faults stored.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Thread Starter
Drifting
Joined: Aug 2006
Posts: 1,719
Likes: 1
From: Florida
St. Jude Donor '07
you should have faults. if you put the car in reverse,do you get reverse lights? maybe you have a manual valve position sensor problem?
i think your problem is electrical,not mechanical and i don't think it's pcm related.almost sounds like the pcm is not seeing drive.
either way,be it mechanical or electrical,you should have a fault stored.try driving it and checking for faults WITHOUT turning the car off and see if you have any faults stored.
i think your problem is electrical,not mechanical and i don't think it's pcm related.almost sounds like the pcm is not seeing drive.
either way,be it mechanical or electrical,you should have a fault stored.try driving it and checking for faults WITHOUT turning the car off and see if you have any faults stored.
I see EG wants me to trick it out.
Thread Starter
Drifting
Joined: Aug 2006
Posts: 1,719
Likes: 1
From: Florida
St. Jude Donor '07
I hope you are right regarding it being electrical. I did check it last night and the reverse lights do come on. There are solenoids listed in Rock Auto for 1-2, 2-3, 3-2. Therefore it is not just a bad solenoid. It appears more like it does not get the signal other than in and out of overdrive.
Race Director
Joined: Jan 2003
Posts: 14,285
Likes: 0
From: Houston, Tx Got traction?
CI 5-6-7-8-9-10 Veteran
St. Jude Donor '07-'08
I really like and trust my old boss for transmission diagnostics, over in Merritt Island. Also, i really like Callagy Tires on 520 <just west of A1A>
If the transmissions not slipping, that could be a good sign. Have you checked the fluid? It could be in fail safe mode <not sure if the C5's have this feature or not> But again that would raise the question why no codes .
This weekend you'll get to meet Rodney and Todd. I'm sure they'll have some ideas.
If there's anything i can do, let me know!
Chris
If the transmissions not slipping, that could be a good sign. Have you checked the fluid? It could be in fail safe mode <not sure if the C5's have this feature or not> But again that would raise the question why no codes .
This weekend you'll get to meet Rodney and Todd. I'm sure they'll have some ideas.
If there's anything i can do, let me know!
Chris
Race Director
Joined: Jan 2003
Posts: 14,285
Likes: 0
From: Houston, Tx Got traction?
CI 5-6-7-8-9-10 Veteran
St. Jude Donor '07-'08
That's what i hear! Do you need any tools/jacks for getting under the car and checking the level? Would you like to come to my house to do it? after you pick up Steve?
