How to adjust stepper motor to 30"s steps

[Alvin De Leon]

Hi currently my mini is getting 0 IAC steps and i dont know how to adjust it. 

thanks for everyones help.

[leopold]

Hi, is it working at all?Any reaction on the setting pssibilities in mems-rosco? Check by help of the attached pdf. Translate it with google translate!

[leopold]

Do you have the newest version? github.com/leopoldG
and read that, its not for the spi but will work there too.

Additionally shut down mems rosco by closing it.Some storage will only be done when it is closed  not by breakdown!

[leopold]

Download newest version.
Exit is ok.

[leopold]

Alvin De Leon schrieb:
> On step 3 how do i close the stepper using the diagnostic?

On Sat, Jan 23, 2021 at 11:12 PM Leopold wrote:

idle air minus on the emission-tab.Between minus and plus you see the
actual position.
Spi will be set to 25 not 35!
Alvin De Leon schrieb:

i forgot to mention the previous owner of my mini put in a 731 camshaft. im wondering how much would this affect me on getting the right idle for an spi mini.


Sorry I have no experiance with tuned engines!

[leopold]

No, if you read the describtion again it is like that:

1-engine warmed up, key on,

2-neutral position and handbrake applied

3-With the help of the diagnostic tool, close the stepper

4-Remove the  connector from the IAC

5-Start the engine and let it idle.

You may need to put on some throttle to get it to work.

Check the engine speed. You want the engine speed

is at least 125 rpm below the "target idle speed" specified in the chip.

(This ist the idlesspeed given in the manual)

Use the throttle screw to set the

idle speed "125 rpm less".

Example:

The target idle speed in the chip is 850 rpm

minimum idle speed = 725 rpm ( or greater if it stalls already before)

 

6-Turn off the engine. Connect the IAC connector.

7-Switch on ignition and press the gaspedal three times.

8-Switch off ignition.

9-Start the engine and let it run for 5 seconds, switch off the engine and

wait at least 30 seconds.

10-Start the engine at idle. The idle speed should be close to the Chip set "target idle" when the IAC is controlled by the ECM.

Connect the scanner and check the IAC number. The steps

should be between 20 and 30, but can vary and has a higher

Number in higher altitudes or for a newly converted engine.

If outside of this range then adjust with the diagnostic device.

With the IAC counts, the ECM knows where the stepper motor is

in relation to fully closed or fully open is located.

When the engine is stopped, the IAC will close completely and then

opened up to a specified number of counting increments to use the TBI to prepare for the next engine start.

11 Set idle rpm with diagnostics(not on the screw)

12 Save settings

[leopold]

By the way: Write your answers and questions to everybody!

[leopold]

" Update. Was able to work on the mini today after work. During step 3 when puting on 25 steps w/ iac disconnected. I started the engine and the rpm will go up and down and would not idle. So i abandoned setting it up. Im thinking i must have done something wrong. Any suggestions on what i did wrong? "
How can you set steps while IAC is disconnected?
Read the manual again until you have understood what you should or what you can do!

[leopold]

" Whoops i phrased it out wrong. I set it to 25 steps then disconnected the iac connector. Then started the engine. Thats when it didnt idle and rpm just went up and down wanting to stall. "
You didn`t answer to all again.
You didn`t confirm to the manual.
I stop conversation.