C6 Speedo Problem - HELP!!!!!!!!
Thread Starter
Burning Brakes
Joined: Aug 2004
Posts: 945
Likes: 0
From: Bloomingdale IL
C6 Speedo Problem
The dealer tried every module and changed the instrument cluster as well as the ECU. They told me it may be a problem with the computer programming from Delphi.
Also, is there anyone out there that is having this problem. Thanks for the help.
Also, is there anyone out there that is having this problem. Thanks for the help.
Last edited by c6nut; Jan 23, 2006 at 12:12 AM.
Le Mans Master
Joined: Jan 2005
Posts: 5,611
Likes: 5
From: Thousand Oaks California
C6 Speedo Problem
Originally Posted by c6nut
Would a 3200 tourque converter have any effect on the speedo. Is their any possibility that it makes the engine rev too fast for the speedo to catch a speed reading. I am having a problem in that every time the tires break loose the speed and heads-up do not read until decelleration. The dealer tried every module and changed the instrument cluster as well as the ECU. They told me it may be a problem with the computer programming from Delphi.
Also, is there anyone out there that is having this problem. Thanks for the help.
Ted
Also, is there anyone out there that is having this problem. Thanks for the help.
Ted
I suspect that the ECM software tables do not comprehend the engine rpm to VSS signal mismatch that occurs on an agressive launch, due to the high stall torque converter.
Last edited by calemasters; Nov 19, 2005 at 09:06 AM.
Thread Starter
Burning Brakes
Joined: Aug 2004
Posts: 945
Likes: 0
From: Bloomingdale IL
Originally Posted by calemasters
The speedometer will default to 0 mph if there is a malfunction in the VSS or VSS circuit. The ECM is looking for a 4,000 pulses/mile signal from the VSS. If the VSS and curcuit are OK, the problem may be that the ECM software can not handle the rate of change of the pulses from the VSS, due to the 3200 tourque converter, so the speedometer defaults to 0 mph. Or, if the software detects a mismatch of engine rpms to vehicle speed, the speedo may default to 0 mph.
I suspect that the ECM software tables do not comprehend the engine rpm to VSS signal mismatch that occurs on an agressive launch, due to the high stall torque converter.
I suspect that the ECM software tables do not comprehend the engine rpm to VSS signal mismatch that occurs on an agressive launch, due to the high stall torque converter.
