A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

Car dead - basic diagnostic help needed

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Old Jun 17, 2006 | 09:49 PM
  #1  
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Default Car dead - basic diagnostic help needed

I put on the following parts this week:

Racetec FMIC
Ported & Polished OEM Exhaust Manifold
APR Turbo Inlet Hose
APR Throttle-Body Hose
SPP EFK

I did a throttle-body adaptation for my GIAC K04 program on Tuesday.

The boost levels have been spiking over 25 psi in hot weather, so I babied the car a bit once I realized there was spiking.

Today I went out for a long drive (on the way to a wedding no less) and opened it up a bit, but not WOT...to see if the boost had settled down. It was a hot day, and I had the AC on (for the wife).

Anyway...about 30 mins into the drive, loss of power. I pull over, and ease the car to a safe spot about 100m down the road. Now the car will only go forward a few feet without stalling. Very rough idle, a little black smoke.

Is this a blown KO4, or worse?

TIA.
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Old Jun 17, 2006 | 10:02 PM
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Default Check your mass airflow sensor

it's on the throttle body.
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Old Jun 17, 2006 | 10:08 PM
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Did you get that airbox/maf? .. or was that someone else
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Old Jun 17, 2006 | 11:22 PM
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Default the MAF is in the airbox, not on the throtle body. you are thnking throtle position sensor maybe?

or MAP sensor, if he has one, 2000+ does, and thats in the intercooler.
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Old Jun 18, 2006 | 05:53 AM
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Joey T
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Boost leak.
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Old Jun 18, 2006 | 08:20 AM
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Default

Ahh, on the 2.8 it's on the throttle body
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Old Jun 19, 2006 | 08:22 AM
  #7  
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Default Good news...

Turns out I just blew a hose off the BPV. Phew. Thanks for the interest and comments.
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Old Jun 19, 2006 | 09:09 AM
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Joey T
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I was right
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