99 C5 Auto, Transmission slips between 3rd and 4th???

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Sep 8, 2003 | 08:56 PM

AussieC5

Thread Starter

1st Gear

Joined: Sep 2003

Posts: 1

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From: PERTH WA

99 C5 Auto, Transmission slips between 3rd and 4th???

Hi guys I'm in Western Australia and have a 99 C5 Auto Convertible, it has been converted to right hand drive but everything else is stock. There is absolutely NO help here and no one here knows anything about these beautiful machines. When I drive the Auto Transmission is slipping when it changes between 3rd gear and 4th gear, when your driving along as it gets to 3rd and about to go to 4th the revs climb and it responds like it was in neutral until it suddenly jumps into 4th and drives again?? If anyone has had any similar incidents with their cars please let me know. I would take it straight to a dealer, if it wasn't a boat trip away.

Sep 8, 2003 | 09:26 PM

brialex42

Racer

Joined: Jul 2002

Posts: 267

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From: Minnetonka MN

Re: 99 C5 Auto, Transmission slips between 3rd and 4th??? (AussieC5)

Sounds like you are at the point of needing the tranny rebuilt....

From what I have seen thus far, the slippage you are talking about from the 3 to 4 shift is one of the first signs as the clutches are starting to go. I am at the same point right now as my car is showing the same signs although it is a 2002. However I am sure the 425 RWHP LGM added has a little bit to do with it and will soon be upgrading to an FLP Level IV tranny.

Sep 8, 2003 | 09:33 PM

MC TORCH RED

Le Mans Master

Joined: Jan 2003

Posts: 6,427

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From: houston texas

Re: 99 C5 Auto, Transmission slips between 3rd and 4th??? (brialex42)

:iagree: start saving....... :yesnod:

Sep 8, 2003 | 09:50 PM

TLewis4095

Le Mans Master

Joined: Aug 2001

Posts: 8,145

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From: Bradenton FLORIDA

Re: 99 C5 Auto, Transmission slips between 3rd and 4th??? (MC TORCH RED)

2-3/3-4 lutch paks...have experianced it personally. Need to rebuild it with Kevlar band & clutch pak. Transgo shift kit recomended....be careful w/LS1 edit for line pressure after you do the transgo as the transgo will raise the line pressure manually and to much added with tuning will cause quick failure. :cheers:

Sep 9, 2003 | 10:18 AM

kromberg

Le Mans Master

Joined: Jan 2001

Posts: 5,785

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From: Lafayette Colorado

Re: 99 C5 Auto, Transmission slips between 3rd and 4th??? (TLewis4095)

Quote:

.... and to much added with tuning will cause quick failure.

About 100 yards will do it :jester

Keith

Sep 9, 2003 | 11:48 AM

vstella

Le Mans Master

Joined: Nov 2000

Posts: 7,294

Likes: 1

From: Coral Springs Florida

Re: 99 C5 Auto, Transmission slips between 3rd and 4th??? (TLewis4095)

Quote:

:iagree: I've been there!! You really need to look into a new transmission that will serve you for a long time. Check out www.transmissioncenter.net Call them for advice on the 4L60E . The transmissions are ready to install so any competant technician can install...Good Luck!! :D

Sep 9, 2003 | 05:56 PM

BHP

Le Mans Master

Joined: Jul 2002

Posts: 7,076

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From: Nevada and Florida

Re: 99 C5 Auto, Transmission slips between 3rd and 4th??? (vstella)

Check your tranny fluid. Make sure you have no leaks and level is correct. The color should be a clear red, if black and smells burnt, tranny needs a rebuild.

Sep 9, 2003 | 06:38 PM

1SGRET

Drifting

Joined: Jun 2001

Posts: 1,934

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From: Mount Vernon Arkansas

St. Jude Donor '12-'13

Re: 99 C5 Auto, Transmission slips between 3rd and 4th??? (BHP)

G'Day Mate. I'm not really Australian but I sound like it don't I? :rofl: :rofl: :rofl: :rofl:

I agree with the statements above. Listen to Vstella he knows what he's talking about.