No Throttle No codes

[jkolewski]

2017 L5p
Fully deleted for 30k
130k on truck
The truck starts fine. It started having no throttle response. I could turn it off then restart and it would go away.
I cleaned the MAS
Changed a glow Plug ( only code it was throwing, gone now)
Changed fuel filter
No Codes
With HP tuners hooked up it shows accelerator position as accurate. The actual throttle position stays @ 0
Not sure how it goes (not very well but goes)
It has good fuel pressure.
Pedal???
I'm not finding much on the interweb
Thanks for the help!

 

[kidturbo]

Look for pids under APPS. Those be the name of raw sensor voltage data. Should have apps1 & apps2. One sweeps low to hi voltage, other exact opposite. If those are out of spec at key-on the engine will have no throttle response.

Sent from my SM-S901U using Tapatalk

 

[jkolewski]

Thanks for the reply. It took me a minute to find the pids.
pos. A starts at .94 V no throttle
pos. B starts at .47V no throttle
pos. A 4.10 full throttle
pos. B 2.08 full throttle
accelerator pos 99%
TPS 0 Does the diesel not have tps?

Still back to the same problem. Pedal down = nothing/ almost nothing
No codes
Idle high as well

 

[2004LB7]

As mentioned above, one should be low and go high. The other should be high and go low. Looks like something is wrong with yours

 

[JoshH]

Does it have a pedal booster?

 

[kidturbo]

I'm not positive on that sweep for l5P. But will take a look at an lmm in a few for comparison. If it shows 0% 99% in the data, then it's working. No they do not use TPS on the diesels.

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[kidturbo]

I was thinking something else when said reversing sweeps. Yours looks in spec to me.



I run E38 - E92 gas engine throttles with LMM's, and here the normal spread for those.