I've been keeping an eye on the recent threads about the MAF and blown motors on Viggens. I spoke to the mechanic that works on most of the Viggens in this area at the dealership and he gave me the % of devience for the MAF setting - it is 14% and cyl 1 starts to run lean. A few weeks ago I was playing with a Tech II on my car and I reset all the misfire, etc for all the cylinders (just pure luck for today).....today at lunch I borrowed a Tech II (not from the dealership) and played with it for about an hour. I found that my MAF sensor is out of wack - it is usually somewhere between -5% to a peak of 19%. I did data logging of the various sensors and when the MAF devience went above 14% there were misfires in all the cyl - with cyl 1 having 50% more then the others.

The car had it's 60k service...so plugs and everything is new, it has a K&N air filter, and the MP IC (which if intake temp is measured after the IC - it reduces temps after getting on boost super fast). The car is also CPO - so it'll be going in on Tuesday for a new MAF before the engine blows....a brief conversation today with the mechanic came to the conclusion that my engine would probably melt a piston if I took it up in the mountains this weekend and got on the boost.

-Eric


posted by 64.207.3...

• '00 Viggen @ 63.5k - what I found about the MAF (long), Eric, Thu, 12 May 2005 11:56:40 <-- Viewing This Message
  • I think i am going to replace my maf:, rico, Sun, 15 May 2005 17:58:03
  • Re: '00 Viggen @ 63.5k - what I found about the MAF (long), ckpaden, Sun, 15 May 2005 16:13:44
  • Mine failed at 55K miles, Tito, Fri, 13 May 2005 13:52:08
  • I did have an airbox failure prior to MAF..., Crispin, Fri, 13 May 2005 05:53:14
  • For the ignorant among us, MAF = ?, Mark Anderson, Thu, 12 May 2005 14:44:59
    • MAF = Mass Airflow Sensor..., turrbo , Thu, 12 May 2005 17:36:25
      • OK, so I must still have the original one..., Mark Anderson, Fri, 13 May 2005 09:30:04
        • Re: OK, so I must still have the original one..., AT, Fri, 13 May 2005 10:43:35
  • Re: '00 Viggen @ 63.5k - what I found about the MAF (long), Tom Manning, Thu, 12 May 2005 12:47:24
    • Re: '00 Viggen @ 63.5k - what I found about the MAF (l, Dean, Thu, 12 May 2005 14:08:06
      • Re: Heat failure?, AT, Thu, 12 May 2005 18:42:09
    • so your saying..., GM, Thu, 12 May 2005 14:08:01
      • Re: so your saying..., Eric, Thu, 12 May 2005 15:16:55

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