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Posted by Shaun Dale on June 7, 2005, 10:40 am, in reply to "Re: UPDATE- VW Bora 1.9 TDi AJM 2001- power loss after hard driving"
If I'm not too late....
I have had a similar fault several times now, the cure is...... a new MAF (airflow meter)!
The MAF ages and the output goes down for a given true airflow, the engine management then gives more boost in an attempt to get the desired airflow, right up until it hits its never exceed limit of 2500mBar! Then it goes into limp home mode,cuts the boost right down and thinks the pressure sensor has a fault.
Check the MAF output at WOT it should be 750-800 going from memory, you will probably find you are getting 500-600 (can't remember the units without looking up my notes)
HTH, Shaun
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| Message Thread:
- VW Bora 1.9 TDi AJM 2001- power loss after hard driving - Nick Bell May 23, 2005, 5:03 pm
- replies - Nick Bell May 24, 2005, 8:43 pm
- replies - Brodie Orford May 24, 2005, 10:25 pm
- replies - Wilbert Fleck May 25, 2005, 8:28 am
- replies - sean savage May 25, 2005, 1:56 pm
- replies - Nick Bell May 26, 2005, 11:03 am
- replies - james mccallum May 29, 2005, 10:26 pm
- replies - Nick Bell May 31, 2005, 11:24 am
- replies - Shaun Dale June 7, 2005, 10:40 am
- replies - Nick Bell June 7, 2005, 11:22 am
- replies - john smithson June 7, 2005, 12:08 pm
- replies - John Stone June 24, 2005, 1:19 pm
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