09-15-2006, 12:57 PM
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#1
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Registered User
Join Date: Dec 2005
Location: Akron
Posts: 793
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Quote:
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Originally Posted by blinkwatt
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Was the scanner correct? Did you end up having a maf issue?
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2002 TT
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09-15-2006, 01:25 PM
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#2
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Registered User
Join Date: Jul 2006
Location: Where the Sewer Meets the Sea, CA. USA
Posts: 2,695
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When i got my MAS code on the Scanner, it was accurate, However i do not think the misfire is related to the MAS code, I think maybe that misfire could have been a result of your boost leak you had OR maybe the mixture is getting too hot and your getting detonation and in that case i would recommend a colder spark plug...denso iriduims are awesome and autozone usually keeps them in stock.
If you pulling an o2 sensor code i think they were just about on there way out and the added heat exhaust gases from the supercharger may have helped in them failing. You may need all 3 things replaced.
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09-15-2006, 01:25 PM
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#3
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Registered User
Join Date: Sep 2005
Location: Sacramento
Posts: 3,417
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Quote:
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Originally Posted by ohioboxster
Was the scanner correct? Did you end up having a maf issue?
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1. The scanner gave me the codes indicated what was wrong. It read to me P1123 and P1125.
2. I found the meaning to those codes,I beleive it was;
"P1123=( Oxygen Sensing Adaptation Area 1 (Cylinders 1 - 3) - Lean Threshold)"
"P1125=( Oxygen Sensing Adaptation Area 2 (Cyclinger 4 - 6) - Lean Threshold)"
3. Time to troubleshoot. Searched every archive I could,talked to MNBoxster(he was dead on),called around some indie Porsche shops. As soon I let people know I had a K & N air filter from the previous owner they said to change the MAF.
4. Bought a new MAF and walla! All was good again!
The codes only point to whats rich,lean,misfiring etc. They don't say specifically what is causing the issues. Thats what the search and archives are for. Good luck with all those codes.
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-99' Zenith Blue 5-spd...didn't agree with a center divider on the freeway
-01' S Orient Red Metallic 6-spd...money pit...sold to buy a house 
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09-15-2006, 02:03 PM
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#4
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Registered User
Join Date: Sep 2005
Location: Minneapolis/St. Paul, Minnesota, USA
Posts: 3,308
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Hi,
Pull the MAF and try cleaning it before spending $$$. If it works, at least you've bought some time.
You might be getting some detonation, use only the best gas. Going to a colder plug is OK if you can find one in the proper range. Too cold and you'll foul the plugs. Forget the irridiums, they're a marketing gimmick at a premium price, stick with OEM Bosch or Beru...
Happy Motoring!... Jim'99
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09-15-2006, 03:17 PM
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#5
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Registered User
Join Date: Oct 2004
Location: Toms River, NJ
Posts: 88
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Hi,
I recently had my MAF go bad.The car ran real bad on startup in the morning. It accelerated horribly and was just slow.I got the codes read at autozone and it said oxygen sensors,well it was the MAF and not the oxygen sensors to make a long story short. To figure out if that is your problem,just disconnect the wire for the MAF and it will put the computer into default mode,your car will run great if that's the problem.By the way,don't buy the bosch universal oxygen sensors if you ever need to replace any of them,they don't work  .
Frank
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09-15-2006, 06:05 PM
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#6
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Registered User
Join Date: Dec 2005
Location: Akron
Posts: 793
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Quote:
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Originally Posted by Frank
Hi,
I recently had my MAF go bad.The car ran real bad on startup in the morning. It accelerated horribly and was just slow.I got the codes read at autozone and it said oxygen sensors,well it was the MAF and not the oxygen sensors to make a long story short. To figure out if that is your problem,just disconnect the wire for the MAF and it will put the computer into default mode,your car will run great if that's the problem.By the way,don't buy the bosch universal oxygen sensors if you ever need to replace any of them,they don't work .
Frank |
I wondered anbout those cheap universal 02 sensors. I have a couple of good 02 sensors from another car and dont see why they couldnt be used if I could figure out the wires.
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2002 TT
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09-16-2006, 06:21 AM
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#7
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Registered User
Join Date: Oct 2004
Location: Toms River, NJ
Posts: 88
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Yes,I thought they would work great. I bought them off the internet for a good price and looked at the diagrams in my porsche service book and figured out the wires.(2 whites,1black,and a grey).After hooking them up,the car ran MUCH worse.I then spoke with a mechanic friend of mine and he said that most of the universal sensors will not work correctly on high end cars.Well,atleast I tried...
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09-18-2006, 03:07 PM
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#8
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Registered User
Join Date: Dec 2005
Location: Akron
Posts: 793
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Quote:
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Originally Posted by Frank
Hi,
I recently had my MAF go bad.The car ran real bad on startup in the morning. It accelerated horribly and was just slow.I got the codes read at autozone and it said oxygen sensors,well it was the MAF and not the oxygen sensors to make a long story short. To figure out if that is your problem,just disconnect the wire for the MAF and it will put the computer into default mode,your car will run great if that's the problem.By the way,don't buy the bosch universal oxygen sensors if you ever need to replace any of them,they don't work .
Frank |
Frank,
It worked! I pulled the harness off the maf sensor and the car started right up cold with no stumble. I kept it out of boost and drove it home with no issues. That was a great idea unplugging the maf! It kept the values set and allowed me to eliminate the maf from the equation, Thanks!
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