2.7T GIAC Stage 3- running rich
11-30-2006, 07:40 AM
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2.7T GIAC Stage 3- running rich
The following codes were stored:
17547 - fuel trim bank 2 (add) - system too rich (intermittent)
17537 - fuel trim bank 2 (mult) - system too rich
17535 - fuel trim bank 1 (mult) - system too rich
I pressure tested the intake for leaks, nothing abnormal there.
The MAF is a nearly new Hitachi unit (5,000 miles).
All 4 O2 sensors are new (less than 3,000 miles).
The fuel pressure regulator (5 BAR) is almost new (5,000 miles).
The fuel pump is original, the injectors are original.
I'm about the swap some new injectors in, but I'm not sure that would help. I'm no expert, but it would seem better injectors would only make it run richer, no? I'm stumped.
Any thoughts?
17547 - fuel trim bank 2 (add) - system too rich (intermittent)
17537 - fuel trim bank 2 (mult) - system too rich
17535 - fuel trim bank 1 (mult) - system too rich
I pressure tested the intake for leaks, nothing abnormal there.
The MAF is a nearly new Hitachi unit (5,000 miles).
All 4 O2 sensors are new (less than 3,000 miles).
The fuel pressure regulator (5 BAR) is almost new (5,000 miles).
The fuel pump is original, the injectors are original.
I'm about the swap some new injectors in, but I'm not sure that would help. I'm no expert, but it would seem better injectors would only make it run richer, no? I'm stumped.
Any thoughts?
11-30-2006, 07:56 AM
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Did a bit more research, and I think injectors are in fact due for a replacement
The article below explained some things to me.
It seems the ECU compensates for clogged injectors by making them open longer, therefore leading to a rich condition.
Right?<ul><li><a href="http://www.ttguy.com/html/maf-vag-com.html">http://www.ttguy.com/html/maf-vag-com.html</a</li></ul>
It seems the ECU compensates for clogged injectors by making them open longer, therefore leading to a rich condition.
Right?<ul><li><a href="http://www.ttguy.com/html/maf-vag-com.html">http://www.ttguy.com/html/maf-vag-com.html</a</li></ul>
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