Quadzilla Shudder light throttle

[kzimmer]

1 minute ago, Me78569 said:

Thanks.   I will think.

 

I keep coming back to TPS > 0% OR RPM > X RPM, of course for automatics only. Should take care of the DBW cruise control.

[Me78569]

You wish,   Some auto trucks have electric cruise control.  

[kzimmer]

3 minutes ago, Me78569 said:

You wish,   Some auto trucks have electric cruise control.  

 

I meant drive by wire cruise control = electric cruise control. Quad takes over with tps OR rpm.

Edited September 12, 2017 by kzimmer

[NoMercy Z06]

5 minutes ago, kzimmer said:

 

My bad, I forgot, you told me this before.

 

 

No prob. Light throttle, as soon as RPM reaches over X RPM (we tried a few tunes a while back and I cant remember where we left off, 950 rpm rings a bell), quad takes over, and since my 0 PSI canbus starting point is about 66%, fuel levels for Y% TPS drop, RPM's drop, quad lets go of control, fuel for Y% TPS increases as quad does not have control, equivalent of 100% canbus starting point, RPM's raise. Rinse and repeat. It's very noticeable and i've had people look my way in parking lots with "wtf" written on their faces. Will do it idling or while driving slow, parking lot, residential neighborhood on turns, etc.

I know we've talked about this before but I have the same issue.  I can kill my truck pulling out of a parking spot if my low psi canbus is below 92%.  It's all around that 950 RPM point. Just touch the throttle stuff.  

 

 

Kzimmer, who's injectors do you have? 

 

[Me78569]

Some auto trucks have it.  It is a mix match of 01-02 that doen't report TPS input on cruise control.  Some auto trucks.... it's enough to drive me crazy

 

 

 

@NoMercy Z06 It is still baffling to me that your truck will actually die.  

Edited September 12, 2017 by Me78569

[kzimmer]

2 minutes ago, NoMercy Z06 said:

I know we've talked about this before but I have the same issue.  I can kill my truck pulling out of a parking spot if my low psi canbus is below 92%.  It's all around that 950 RPM point. Just touch the throttle stuff.  

 

 

Kzimmer, who's injectors do you have? 

 

 

Factory bodies with Diesel Speed Shop 7x.014 VCO.

1 minute ago, Me78569 said:

I might be able to do a 

 

(tps > 1 || rpm > 950) || (rpm >1000)

 

That's worth a donation right there, lol.

[Me78569]

that wont work,  manual trucks would loose anti stall.  

[kzimmer]

1 minute ago, Me78569 said:

that wont work,  manual trucks would loose anti stall.  

 

Only if automatic is selected in settings?

[Me78569]

  @NoMercy Z06

 

Can you data log you killing the truck by blipping the throttle?

[NoMercy Z06]

1 hour ago, Me78569 said:

  @NoMercy Z06

 

Can you data log you killing the truck by blipping the throttle?

I can yes.  I tried to download it before for you but the app locked up and I lost it.   I never tried it on 0 to see if it still died.    I'll try that as well.   Bad thing is I put my Quad in a few days before the injectors so I don't really know which is the cause.  The whole 950 rpm point is where it dies though.   If it doesnt die it definitely surges several times before it settles. 

[NoMercy Z06]

First data log.   Only 40 seconds long.   Was able to kill it on the second blip.  This was on setting 3.

iQuad-2017-09-13-04.12.00-1003662037.csv

Second log on 0 setting.  Tried 4 or 5 times but couldn't get it to die.  Would still surge but not die. 

iQuad-2017-09-13-04.13.18285870774.csv

Edited September 13, 2017 by NoMercy Z06

[Me78569]

8 minutes ago, NoMercy Z06 said:

First data log.   Only 40 seconds long.   Was able to kill it on the second blip.  This was on setting 3.

iQuad-2017-09-13-04.12.00-1003662037.csv

Second log on 0 setting.  Tried 4 or 5 times but couldn't get it to die.  Would still surge but not die. 

iQuad-2017-09-13-04.13.18285870774.csv

Thanks

 

 

Very interesting.   You can see the ECM is trying to keep the truck alive, but the vp isn't responding.  Note the canbus fuel message sky rocketing, BUT EGT's are nearly stable. 

 

Flash that flash I gave you and see if you can reproduce the issue, but the Quadzilla gives up controls soon as TPS = 0 or RPMS are sub 950 rpm.  

 

I am confused as to why the vp44 isn't fueling on command.  

 

[trreed]

1 minute ago, Me78569 said:

I am confused as to why the vp44 isn't fueling on command.

Because all VP's are angery.

[NoMercy Z06]

Well to further add to it I just put a new VP in a few months back, did injectors at the same time. 

[Me78569]

would you say the truck starts to stumble abour half second after tps returns to 0?

 

I am curious about that canbus signal that drops to 0 there on line 21.  

[NoMercy Z06]

Oh yes

[Me78569]

how tight is your converter?

[NoMercy Z06]

It will stumble a time or two then come back and idle or it will die right after the first stumble

[NoMercy Z06]

1 hour ago, Me78569 said:

how tight is your converter?

I'm not sure.  Feels okay to me, doesn't drive any different and haven't noticed any changes.  Having said that you bring up a good point, it definitely could be the cause of a stumble like that if it's starting to let go. 

Edited September 14, 2017 by NoMercy Z06

[Me78569]

It is a stock TC?