| Author |
Message |
    
nick
| | Posted on Sunday, July 21, 2002 - 12:11 pm: | 
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Is there any way to check if the stepper motor is working properly,what do you look for when it is taken off the engine? |
derek (Vortrex)
| | Posted on Sunday, July 21, 2002 - 02:25 pm: |
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can someone tell me what the stepper motor does? |
nick
| | Posted on Sunday, July 21, 2002 - 11:47 pm: |
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what I meant, is there any way to bench test the stepper motor?my origional question was not specific. |
hendrik
| | Posted on Monday, July 22, 2002 - 02:29 am: |
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AFAIK, it controls the idle under different engine loads. So if you switch on the A/C the rpm´s will drop a little. The stepper motor opens a little then letting additional air into the plenum chamber thus rasing the idle again.
So clues for its operation can be had in situ, no ? Cleaning it should be sufficient then. At least the Workshop manual I looked into gives no bench-test procedure. |
anonomous
| | Posted on Monday, July 22, 2002 - 06:21 am: |
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Could someone please post a pic of a stepper motor from a 3.9 litre.So I know what one is when I go looking for it?
thanx in advance |
Rob Davison (Pokerob)
| | Posted on Monday, July 22, 2002 - 10:06 am: |
|
http://www.discoweb.org/faq/stepper.htm
http://www.jpurnell.com/RR/repairs/Air%20Bypass%20Valve.htm
rd |
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