Ecumaster forum

DBW idle Problem. normal 4zyl with light cams. tps as main load Funktion.
I use the dbw with idle Funktion. In cold condition i must increase tps to make sure engine run with 1000rpm.
Normal Position when engine is warm is 5%tps. In cold condition i should have 8%. Over the idle Funktion i increase it to 8%.
If i press the accelerator pedal a little (in cold engine condition) i left the idle condition and then the tps reduce to 5% because it switch to the main dbw table, engine stall.
Question
Is there a funktion for adding tps Position over enginetemp in all conditions?
Is it possible that "overrun fuel cut rpm" is programable over enginetemp.

shrek69 wrote:DBW idle Problem. normal 4zyl with light cams. tps as main load Funktion.
I use the dbw with idle Funktion. In cold condition i must increase tps to make sure engine run with 1000rpm.
Normal Position when engine is warm is 5%tps. In cold condition i should have 8%. Over the idle Funktion i increase it to 8%.
If i press the accelerator pedal a little (in cold engine condition) i left the idle condition and then the tps reduce to 5% because it switch to the main dbw table, engine stall.
Question
Is there a funktion for adding tps Position over enginetemp in all conditions?
Is it possible that "overrun fuel cut rpm" is programable over enginetemp.

idle duty cycle ref table is position of throttle it is in percent of idle range . and also characteristic need to be set so going out of idle you not shutting throttle so number there need to be adjusted.
All is well explained in Help file in software.

gregpe wrote:

shrek69 wrote:DBW idle Problem. normal 4zyl with light cams. tps as main load Funktion.
I use the dbw with idle Funktion. In cold condition i must increase tps to make sure engine run with 1000rpm.
Normal Position when engine is warm is 5%tps. In cold condition i should have 8%. Over the idle Funktion i increase it to 8%.
If i press the accelerator pedal a little (in cold engine condition) i left the idle condition and then the tps reduce to 5% because it switch to the main dbw table, engine stall.
Question
Is there a funktion for adding tps Position over enginetemp in all conditions?
Is it possible that "overrun fuel cut rpm" is programable over enginetemp.

idle duty cycle ref table is position of throttle it is in percent of idle range . and also characteristic need to be set so going out of idle you not shutting throttle so number there need to be adjusted.
All is well explained in Help file in software.

thanks for the answer.
i try and read it very often maybe i need some help.
As i said in cold you have to increase the tps, but you can it only do in idle condition. Leave idle it switch to the characteristic. Did i miss something?

TPS is a pedal position.. Idle range in DBW setting is position of throttle plate when you have ref duty cycle 100 and now ref duty cycle table is VS of coolant temperature so you setting higher DC and you will have throttle open more.. it wiorking quite good. and than in haracteristic table make surethan firs row and second is not less that DBW position on idle you can see it on log..

gregpe wrote:TPS is a pedal position.. Idle range in DBW setting is position of throttle plate when you have ref duty cycle 100 and now ref duty cycle table is VS of coolant temperature so you setting higher DC and you will have throttle open more.. it wiorking quite good. and than in haracteristic table make surethan firs row and second is not less that DBW position on idle you can see it on log..

Yes that is going the way you explained it. The Idle range(dbw Setting) is to give the "idle ref table" a finer resolution.

You have set your dbw characteristic table in the first rows are less than your idle...but in which condition of the idle....cold or warm?

How much increase did you have on your car at cold conditions.

Where can i look at driver pedal position.

I don't find the driver pedal position in log.
Can anyone give me a hint.

Like explained above, pedal position is TPS.

can you tell me what is wrong

Screen shot is not helpful, missing lots of channels with DBW post here log file tahn we can have a look

please