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Author Subject: Stepper Motor Guide
scottri

Seasoned Pro

Location: York

Registered: 12 Dec 2003

Posts: 5,530

Status: Offline

Post #1
Stepper Motor Guide

The stepper motor is also called ICV (idle control valve), which is exactly what it does.

You may want to clean the stepper motor if you have any of the following:

Bad Idle
Hunting (rising and dropping revs)
Stalling

Please see the below pic for the location of the motor. The Red arrow points to the motor.

To Remove and Clean follow these instructions.

1. Disconnect battery
2. Remove Bolt which the blue arrow points at. (10mm I think)
3. Remove the bolt directly below the above bolt (out of view on this shot)
4. Pull away the unit and disconnect the plug at the back.
5. You now need to take the stepper motor off the housing - just another 2 bolts.
6. You can now clean or replace the motor. I replaced mine but others have cleaned with Carb Cleaner, WD40, or similar de-greaser.
7. Refitting is the reverse of the above.

Reconnect battery and reset the ECU (See Dom's guide)

I also removed the accelerator cable and a few other bits for easy access.

Cheers.

Rich.

scottri has attached the following image:

________________________________________

Ripping up the M1 with M Power.
Posted 23rd Oct 2004 at 16:47
scottri

Seasoned Pro

Location: York

Registered: 12 Dec 2003

Posts: 5,530

Status: Offline

Post #2
Stepper Motor itself...

scottri has attached the following image:

________________________________________

Ripping up the M1 with M Power.
Posted 23rd Oct 2004 at 16:43
dommorton Forum Admin

Location: Nowhere near banner

Registered: 11 Dec 2002

Posts: 25,601

Status: Offline

Post #3
Here are the inards of the Stepper

(NOTE YOU CANNOT TAKE YOURS APART LIKE THIS!!! IT IS ONE WE BUSTED OPEN TO SEE HOW IT WORKS!!!)

It's just a basic Solenoid which gets clogged with carbon


________________________________________

My other Peugeot is a 911
Posted 27th Apr 2005 at 17:04
Lazza

Seasoned Pro

Location: London

Registered: 06 Nov 2003

Posts: 6,400

Status: Offline

Post #4
Posted by Nwphoto.....................

The stepper motor is actually a solenoid valve that controls the idle speed by opening & closing the auxiliary airway when the throttle is closed. It is actualy 2 solenoids, one pulling, one pushing against the valve. Take it out & clean it but, while it's out, check the coils resistance to see if they're ok. If not, you'll need a new one

nwphoto has attached the following image:

Lazza has attached the following image:

Posted 5th Mar 2005 at 17:14
nwphoto

Club Snapper

Location: Midlands

Registered: 22 Mar 2004

Posts: 5,183

Status: Offline

Post #5
Check resistance -

between terminals A & D = 52-58 ohms
between terminals B & C = 52-58 ohms
Posted 5th Mar 2005 at 22:24

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