Decell problem

krazykannuck · Post by **krazykannuck** » Wed Feb 15, 2006 3:15 pm

v3 MS1, sbc, tbi

I have done some crude tuning, and have checked my data logs I get
the Accel indicator in megatune to light but cant get decell to light.
Even though I have the car at WOT and let off the gas all the way.

What could this be?

Bernard Fife · Post by **Bernard Fife** » Wed Feb 15, 2006 5:22 pm

I get the Accel indicator in megatune to light but cant get decell to light

krazykannuck,

I just tried this on the bench with MS-II, V3, 2.6 code, MT225, and I see the same thing (no TPS decel indicator light when twsting the TPS pot back and forth). So while something's not right, it's not something you have done.

Lance.

krazykannuck · Post by **krazykannuck** » Thu Feb 16, 2006 6:49 am

When I had my sim connected and with MT 2.20, I was able to get it to
work. Since then I upgraded to MT 2.25, and now it doesn't seem to light.
This might help some.

Correct me if I'm wrong but are these lights determined by tpsdot?

mops · Post by **mops** » Thu Feb 16, 2006 10:43 am

but, but, but, i believe i read somewhere that tps decccel was onyl active under 1500rpm....

franklynb · Post by **franklynb** » Tue Mar 07, 2006 6:38 am

lance wrote:
I get the Accel indicator in megatune to light but cant get decell to light
krazykannuck,

I just tried this on the bench with MS-II, V3, 2.6 code, MT225, and I see the same thing (no TPS decel indicator light when twsting the TPS pot back and forth). So while something's not right, it's not something you have done.

Lance.

Any updates/workarounds on this issue? I need fuel cut to pass emissions on the dyno.

Is there a way to backdate to MT2.20 to get this feature working again? I'm still running ec2.11 on my MS-II V3, if that matters.

Decel is clearly NOT indicated in my log files, and I suspect not working
[from the PWM math]. Any expectations on a bug fix?

--frankb