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  #1  
Old 12-31-2003, 06:47 AM
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Join Date: Aug 2002
Location: Central Asia
Posts: 104
Question What error does 40% fixed duty cycle indicate?

Driving around town with a duty cycle meter connected I see that sometimes the duty cycle meter gets stuck at fixed 40%.
Can anyone look up what that means please?

Hurshi
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1989 230E, 8v, 166.000 km, updated to 94/95 trunk & hood
2002 Daewoo Nexia 50.000 km
Sold:
1987 VW Jetta GLE 16V, Recaro seats
1982 Volvo 240 DL (lovely car!)
and few more american cars.
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  #2  
Old 12-31-2003, 09:36 AM
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Join Date: Apr 2000
Location: Falls Church, VA
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"Open circuit or short circuit to air flow position sensor or position indicator faulty. "

This is from the US 124 CD, so take it with a grain of salt.
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Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe
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  #3  
Old 12-31-2003, 04:38 PM
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Join Date: Aug 2002
Location: Central Asia
Posts: 104
That is most probably the correct answer. Below is the picture of my car's air flow meter (potentiometer). You can see that the contact surface is sratched.

The part number for my car's potentiometer is 3 437 224 031. I need to find a new part number to replace it since there is no mention of this part number anywhere on the web. Can I put one from 300E ?

What type of potentiometer do other 2.3l 8v (102982) engine owners have and if someone have replaced the airflow meter housing what is the new part number on the potentiometer?

Hurshi
Attached Thumbnails
What error does 40% fixed duty cycle indicate?-potentiometer-inside-lines.jpg  
__________________
1989 230E, 8v, 166.000 km, updated to 94/95 trunk & hood
2002 Daewoo Nexia 50.000 km
Sold:
1987 VW Jetta GLE 16V, Recaro seats
1982 Volvo 240 DL (lovely car!)
and few more american cars.

Last edited by Hurshi; 12-31-2003 at 04:53 PM.
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  #4  
Old 01-02-2004, 10:51 AM
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Join Date: Dec 2000
Location: AL
Posts: 1,219
Perhaps this is what you need....

Source for Airflow Sensor Potentiometer
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