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

boost problems now missing

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Old Jun 2, 2011 | 11:14 PM
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Default boost problems now missing

i have a 1999.5 a4 quattro and wen i got it, it would never build over 4psi so the other day a buddy and i swaped a turbo he had laying aroud off a 2003 passat onto it the first drive we went on it hit 18psi so we adjusted it back down to stock but now its missing on the number one coil i unplug the coil when idleing and nothing. like a bad coil; but wne driving it cuts in and out i ran a diagnostics and got injectors 1,2,3,4 circut open fule tank vent open missfire on 1,2,4 and random missfire i cleared the codes and got only the missfire on cly 1 is only left
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Old Jun 3, 2011 | 02:45 AM
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Originally Posted by changoo
it hit 18psi so we adjusted it back down to stock
I'll bite. How was this done?
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