A4 and rev limiter question

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Apr 5, 2016 | 04:56 PM

ColinG

Thread Starter

Instructor

Joined: Jun 2013

Posts: 156

Likes: 21

From: Hertfordshire UK

A4 and rev limiter question

I have a '99 automatic and no mods to the engine. The box was apparently rebuilt about 4 years ago and has about 12k on it since the rebuild. At WOT the car hits the rev limiter in 1st gear for about 1/2 a second before changing into second gear and I presume this is not what should be happening.

Any ideas on how I could fix this irritating issue?

Apr 5, 2016 | 05:06 PM

sloopdawg

Burning Brakes

Joined: Feb 2016

Posts: 914

Likes: 182

From: Reidsville North Carolina

shift kit?

Apr 5, 2016 | 05:10 PM

Verrückt ZR1

Melting Slicks

Joined: Jan 2014

Posts: 3,153

Likes: 859

From: Rio Rancho, New Mexico

C6 of Year Finalist (appearance mods) 2019

Perhaps a retune would fix the shifting issue? People swear by Chuck Cow for automatic transmissions. While you're at it, install a 2800 stall.

Apr 5, 2016 | 11:48 PM

0Chuck CoW

Former Vendor

Joined: Nov 2005

Posts: 11,792

Likes: 255

From: Ossining New York

St. Jude Donor '07-'08-'09-'10-'12-'13-'14

Thank you!

Quote:

Originally Posted by TorchRedLS6

Perhaps a retune would fix the shifting issue? People swear by Chuck Cow for automatic transmissions. While you're at it, install a 2800 stall.

Hey there... Yes, it would be great to know more about the car and it's mods and history.

Colin, Please call me or PM me the details about your car so I can see if help you out.

One thing to do first, make sure the TRANS fluid level properly topped off cause if not, 4th gear will be burnt out of it

really fast.

Call any time.
Chuck CoW

Apr 6, 2016 | 09:23 AM

bluemike28

Racer

Joined: Sep 2015

Posts: 265

Likes: 25

From: Houston Texas

Low on fluid?

Based on personal experience, it sounds like you might be low on fluid in the transmission, similar to what Chuck was suggesting. The procedure for filling the transmission is very specific in that the fluid has to be within a specific temp range at the time of fill or you will end up with the wrong fluid level. The 4L60E is very sensitive to this and is easily burnt up, trust me I know. When I was dealing with issues myself, I was seeing that the car did not want to shift at WOT and the problem rapidly progressed until I lost 3 and 4. Turned out, I was low 2 quarts due to improper fill procedures and that led to a full rebuild.

Anyways, good luck with everything. Hope you get it sorted because it is no fun having a car that won't shift when you are on it!

Apr 6, 2016 | 10:12 AM

RoninC5

Racer

Joined: Jan 2016

Posts: 479

Likes: 44

From: Northern Colorado

Not sure if this applies to you but I had the same issue more or less on a C5 I purchased a couple months back. The last owner had it 12 years but apparently babied it enough he never experienced it. The dealer checked fluid and electrics and all was good. They re-flashed the car and the problem disappeared. Now all normal...

Apr 6, 2016 | 12:58 PM

Bill Curlee

Tech Contributor

Joined: Dec 1999

Posts: 32,910

Likes: 2,402

From: Anthony TX

CI 6,7,8,9,11 Vet

St. Jude Donor '08

The A4 transmission has a very specific fluid check and fill procedure. If not followed to the letter, your transmission could suffer permanent damage.

The fluid level has to be CHECKED & REFILLED when the engine is running. If the engine is OFF, approx. 3-4 quarts of fluid will GUSH out of the fill port.

Chuck will do wonders for your trans tuning!