996 Turbo / GT2 Turbo discussion on previous model 2000-2005 Porsche 911 Twin Turbo and 911 GT2.

Misfire or surging above 4500 at WOT ????

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  #16  
Old 03-02-2010, 09:50 AM
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yes I tried cleaning the MAF yesterday, It didint eem to make a difference thought. I am going to try unpluging it and see what hapens.
 
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Old 03-02-2010, 09:51 AM
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Originally Posted by 8757william
I have had this same issue with over 3 tanks of fuel from different stations, so I havent put much thought into bad gas. I have never seen it overboost. I will go check the plugs, I cant remember what they were, just that it was a litter bigger than the recomondations I could find, I used the preset gap from bosch.
I think a plug gap of .028-.030 is a good place to start, if you are going to check them all anyway. MAF's on these cars do create more problems than can be imagined.
 
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Old 03-02-2010, 09:53 AM
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Originally Posted by 8757william
yes I tried cleaning the MAF yesterday, It didint eem to make a difference thought. I am going to try unpluging it and see what hapens.
It's not a good idea to build boost without a MAF. How may miles on that MAF? Maybe just change it, if it doesn't help, you have a spare MAF.
 
  #19  
Old 03-02-2010, 02:14 PM
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Mine was doing the exact thing. I switched to a hitachi MAF and cleared it right up.
 
  #20  
Old 03-02-2010, 03:13 PM
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I think I found my problem..

When I tested it with the MAF unpluged, the abs/psm lights came on but it reved out in the higher gears without any hesitation or surging!

I did it atleast 4 times, hopefully I didint run it lean..

I was surprised to find it was the MAF, because I had no faults pointing to it and I never had the abs/psm lights come on before. It looked fine and I even tried cleaning it.

So I already ordered a new Bosch one off ebay $285 cdn shipped.

Thanks for all the help, I'll post back in a couple weeks after I get the part and try it.
 
  #21  
Old 03-11-2010, 01:27 PM
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Yes, it was the MAF, finally I can enjoy my car. Everything is working great, thanks for all the help.
 
  #22  
Old 03-11-2010, 01:34 PM
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Originally Posted by 8757william
Yes, it was the MAF, finally I can enjoy my car. Everything is working great, thanks for all the help.
Best feeling in the world when you sort it out....time to enjoy it now!!
 
  #23  
Old 03-11-2010, 02:49 PM
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Good to hear.....
 
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