T-28 boost follow-up...no leaks anymore, just about to run rich again
10-16-2004, 07:52 PM
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T-28 boost follow-up...no leaks anymore, just about to run rich again
I got to the shop vac tested everything...broken Forge DV valve. Replaced with 710n. Boost holds prefectly, and rul fuel trim numbers were ok, once I reset them for about 3 hrs. I started the car a few times and nothing. I just went to check the fuel trims again, and it went from -4.6% earlier to -14.8% now. I know there are no vac leaks now, and shops thinks its either software, or 02 sensor. I don't know what's going on. Any ideas why I'm about to go rich?
10-17-2004, 09:10 AM
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I did that, and the shop I go to told me that 02 sensors really need to be looked at while
driving around regularly. And I was loging almost the whole way back to school and just watched my fuel trim climb from -14 to -25% today. I can't for the life of my figure it out. I'll post the logs soon
10-17-2004, 12:38 PM
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Logs...
<center><img src="http://www.imagestation.com/picture/sraid143/pe8bc98c075d3bef498cf9f29b591a544/f69b9b9e.jpg.orig"></center><p>
let me know what you think... I'm looking to resolve this before there is snow on the ground.
http://www.imagestation.com/picture/sraid143/pe8bc98c075d3bef498cf9f29b591a544/f69b9b9e.jpg.orig.jpg
it said the pic posted when I previewed it but I guess not, the link should work
let me know what you think... I'm looking to resolve this before there is snow on the ground.
http://www.imagestation.com/picture/sraid143/pe8bc98c075d3bef498cf9f29b591a544/f69b9b9e.jpg.orig.jpg
it said the pic posted when I previewed it but I guess not, the link should work
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10-17-2004, 05:29 PM
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Take that POS maf sensor out.
No wonder your running rich at part throttle and why your readings are at 180+ g/s at the maf when it should be reading 150-160. This means your ecu thinks there is more air being sucked in then there really is and because of this it is adding too much fuel as the g/s increases. Why did you buy a part cheap VW does not even want anymore? Go find someone with the same year car you have and see if they will let you swap in the stock maf into your car and then log it again.
I just dont get why people with a $30K car wish to put in a cheaper maf then what comes in the car stock. With VW and Audi being the same company dont you think they would have skipped putting in a high priced maf sensor and just slapped in the 2.0 liter maf it worked correctly from the factory?
I just dont get why people with a $30K car wish to put in a cheaper maf then what comes in the car stock. With VW and Audi being the same company dont you think they would have skipped putting in a high priced maf sensor and just slapped in the 2.0 liter maf it worked correctly from the factory?