C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

A4 trans not functioning properly after mail order tune ?

Thread Tools
 
Search this Thread
 
Old Aug 7, 2015 | 11:33 PM
  #1  
flyingillini's Avatar
flyingillini
Thread Starter
Advanced
 
Joined: Jul 2014
Posts: 72
Likes: 3
From: Reno NV
Default A4 trans not functioning properly after mail order tune ?

2000 A4. Only mods headers, x-pipe, cat back. Car was down for two weeks while I shipped PCM to ECS for a mail order tune.

Received PCM today and installed it. Engine runs fine with no load. Car runs like complete trash when in gear, very very sluggish, won't go over 2000 rpm. Trans shakes car when shifting to R/D/3/2/1.

Car throws P0801 Reverse Inhibit Solenoid Control Circuit.

I removed PCM and checked all the connections and wires... seems ok. I checked the no-load voltage on the battery. It was 12.30 V. I charged it for awhile, measured voltage and got 12.70. Reinstalled, same crap. Measured no load voltage again after test drive, got 12.40.

Car and transmission was running fine before shipping off the PCM. Could the battery be bad and could that cause this ? Possibly a broken wire somewhere ? Problem with PCM or TCM ?

No sure where to look ?
Reply
Old Aug 7, 2015 | 11:44 PM
  #2  
Odinson's Avatar
Odinson
Advanced
 
Joined: Jun 2015
Posts: 86
Likes: 3
From: San Diego CA
Default

Have you contacted ECS about the issue yet?
Reply
Old Aug 7, 2015 | 11:51 PM
  #3  
flyingillini's Avatar
flyingillini
Thread Starter
Advanced
 
Joined: Jul 2014
Posts: 72
Likes: 3
From: Reno NV
Default

Sent them a message but after close. Probably won't hear from them until Monday
Reply
Old Aug 8, 2015 | 02:47 AM
  #4  
Cliff8928's Avatar
Cliff8928
Burning Brakes
15 Year Member
 
Joined: Jul 2006
Posts: 763
Likes: 45
From: Long Grove IL
Default

They may have accidentally given you a tune for a manual trans. The P0801 is specific for the 6-speed reverse lockout.
Reply
Old Aug 8, 2015 | 03:47 AM
  #5  
flyingillini's Avatar
flyingillini
Thread Starter
Advanced
 
Joined: Jul 2014
Posts: 72
Likes: 3
From: Reno NV
Default

Originally Posted by Cliff8928
They may have accidentally given you a tune for a manual trans. The P0801 is specific for the 6-speed reverse lockout.
That makes sense because the tranny seems completely and utterly disfunctional.
Reply
Old Aug 8, 2015 | 04:41 AM
  #6  
StingrayRebel's Avatar
StingrayRebel
Acct Suspended APR 2026 by request
 
Joined: Dec 2010
Posts: 10,367
Likes: 1,272
2020 Corvette of the Year Finalist (performance mods)
C5 of Year Winner (performance mods) 2019
Default

don't drive it until you get it taken care of... this is exactly why I hate mail order tunes, it's too easy to overlook or get something mixed up... some shops are pumping these things out like happy meals, more than likely they would catch stuff like this if the car was in front of them... a coworker of mine got a mail tune from another shop against my recommendation not to do it and his trans blew within minutes of flashing his tune... of course the shop denied all responsibility and he was left with an $800 rebuild and $400 to get it tuned properly
Reply
Old Aug 8, 2015 | 10:38 AM
  #7  
DOUG @ ECS's Avatar
DOUG @ ECS
Premium Supporting Vendor
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Oct 2004
Posts: 23,599
Likes: 1,224
From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
Default

Originally Posted by neutron82
don't drive it until you get it taken care of... this is exactly why I hate mail order tunes, it's too easy to overlook or get something mixed up... some shops are pumping these things out like happy meals, more than likely they would catch stuff like this if the car was in front of them... a coworker of mine got a mail tune from another shop against my recommendation not to do it and his trans blew within minutes of flashing his tune... of course the shop denied all responsibility and he was left with an $800 rebuild and $400 to get it tuned properly
Slow down skippy, I do 1000's of these per year, literally. It is possibly that I made a mistake, I am human.

OP, PM me your contact info and I'll make this right for you ASAP, not sure what happened, but I'll get right on it for you.
Reply
Old Aug 8, 2015 | 12:39 PM
  #8  
myredhead1's Avatar
myredhead1
Melting Slicks
 
Joined: Dec 2014
Posts: 2,257
Likes: 433
From: Bossier City Louisiana
Default

Originally Posted by DOUG @ ECS
Slow down skippy, I do 1000's of these per year, literally. It is possibly that I made a mistake, I am human.

OP, PM me your contact info and I'll make this right for you ASAP, not sure what happened, but I'll get right on it for you.
Very nice indeed!
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Aug 8, 2015 | 12:58 PM
  #9  
JargonGrinder's Avatar
JargonGrinder
Advanced
 
Joined: Jun 2015
Posts: 84
Likes: 0
From: Boise Idaho
Default

Originally Posted by DOUG @ ECS
Slow down skippy, I do 1000's of these per year, literally. It is possibly that I made a mistake, I am human.

OP, PM me your contact info and I'll make this right for you ASAP, not sure what happened, but I'll get right on it for you.

Good customer service!
Reply
Old Aug 8, 2015 | 01:05 PM
  #10  
flyingillini's Avatar
flyingillini
Thread Starter
Advanced
 
Joined: Jul 2014
Posts: 72
Likes: 3
From: Reno NV
Default

Originally Posted by JargonGrinder
Good customer service!
Definitely, I am absolutely sure if its the PCM he will fix it.
Reply

Get notified of new replies

To A4 trans not functioning properly after mail order tune ?





All times are GMT -4. The time now is 12:22 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE