DBW - Reduced throttle/power manual shift
10-31-2009, 03:45 PM
#1
DBW - Reduced throttle/power manual shift Looking for some ideas here.
Running a 2000-2002 style dbw - system with a newer throttle body. I have changed the connector and wired the system (reverse TPS) to work.
When the car is sitting still, I have plenty of throttle. Once the vehicle moves I get reduced throttle.
If I disconnect the VSS from the trans - I can drive all I want with all the throttle I want.
No DTCs showing up.
This is actually an 8.1 but it is running on a LS harness (24 tooth) with minor mods. For all practical purposes it is a 2002 6.0 truck motor.
The harness is a painless, and it comes as an "automatic" trans harness.
Here are a few other tid bits.
On my snap on scanner, I am not reading any mph at all.
I have 10.5 volt DC on the VSS out to gauge.
I have replaced the PCM - and ohm'ed out all my wires to verify. I have checked pins - an all is good.
I really want this VSS to read - my goal is to have the cruise working as well.
Ideas...thoughts?
Running a 2000-2002 style dbw - system with a newer throttle body. I have changed the connector and wired the system (reverse TPS) to work.
When the car is sitting still, I have plenty of throttle. Once the vehicle moves I get reduced throttle.
If I disconnect the VSS from the trans - I can drive all I want with all the throttle I want.
No DTCs showing up.
This is actually an 8.1 but it is running on a LS harness (24 tooth) with minor mods. For all practical purposes it is a 2002 6.0 truck motor.
The harness is a painless, and it comes as an "automatic" trans harness.
Here are a few other tid bits.
On my snap on scanner, I am not reading any mph at all.
I have 10.5 volt DC on the VSS out to gauge.
I have replaced the PCM - and ohm'ed out all my wires to verify. I have checked pins - an all is good.
I really want this VSS to read - my goal is to have the cruise working as well.
Ideas...thoughts?
