CAR DOESN"T STALL WITH EST CONNECTOR DISCONNECTED

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Apr 20, 2009 | 12:38 AM

Dean_GTA

Thread Starter

Junior Member

Joined: Jul 2007

Posts: 81

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Car: 1988 TA GTA

Engine: L98 Replaced w/ 350/330HP W/TPI

Transmission: Stock 700r4

Axle/Gears: stock 3:27

CAR DOESN"T STALL WITH EST CONNECTOR DISCONNECTED

Hi, My 1988 Trans Am 350 TPI, idles and runs fine with the EST wire disconnected. When the wire is connected, the car idles rough and stalls when put in reverse or drive. I've tried 2 different distributors and I still have the same problem. Can anybody help?

Last edited by Dean_GTA; Apr 20, 2009 at 02:16 AM.

Apr 20, 2009 | 09:53 AM

kcallais

Member

Joined: Mar 2005

Posts: 132

Likes: 0

From: Tyndall AFB, FL

Car: 1985 Z28

Engine: 305 TPI

Transmission: 700R4

Axle/Gears: garbage 2.73

Re: CAR DOESN"T STALL WITH EST CONNECTOR DISCONNECTED

try a new ecm

Apr 20, 2009 | 09:55 AM

John 89 Formula

Senior Member

Joined: Jul 1999

Posts: 853

Likes: 0

From: Everett, MA . USA

Car: 89 FORMULA FIREBIRD, 86 CHEVY CAMARO

Engine: L98, LB9 RESPECTIVLY

Transmission: 700 R4 (BOTH)

Re: CAR DOESN"T STALL WITH EST CONNECTOR DISCONNECTED

check your base timing stock is 6 degrees before.

Apr 20, 2009 | 10:40 AM

Vortex91

Member

Joined: Aug 2004

Posts: 180

Likes: 0

From: Woodbridge, ON, Canada

Car: Camaro RS '91

Engine: 305 TBI

Transmission: Auto w/ TransGo shift kit

Axle/Gears: 2.73

Re: CAR DOESN"T STALL WITH EST CONNECTOR DISCONNECTED

Hey Dean, did you rebuild the MSD distributor with new parts from MSD?

D.

Apr 20, 2009 | 01:20 PM

Dean_GTA

Thread Starter

Junior Member

Joined: Jul 2007

Posts: 81

Likes: 0

Car: 1988 TA GTA

Engine: L98 Replaced w/ 350/330HP W/TPI

Transmission: Stock 700r4

Axle/Gears: stock 3:27

Re: CAR DOESN"T STALL WITH EST CONNECTOR DISCONNECTED

Base timing is set to 6* before with the EST wire disconnected. With the wire connected it advances to about 16*+ & - but it's not a smooth idle.

Apr 21, 2009 | 12:55 PM

kcallais

Member

Joined: Mar 2005

Posts: 132

Likes: 0

From: Tyndall AFB, FL

Car: 1985 Z28

Engine: 305 TPI

Transmission: 700R4

Axle/Gears: garbage 2.73

Re: CAR DOESN"T STALL WITH EST CONNECTOR DISCONNECTED

Youve tried different dizzys with the same result. Its runs just fine with the EST disconnected you said. The only difference between EST connected and not, is connected the ECM drives the advance/retard function. Try a different ecm/prom.