[s-cars] S6 Gremlins

[Kent McLean]

iain.atkinson at tesco.net wrote:
> i need some advice please, i have on order a 1.8T coil pack conversion 
which i hope will cure the high boost misfire that i have. Whislt still 
driving the car vag com shows i now have 2 further problems.
> 
> 1. G28 (which i think is the crank position sensor) is saying implausable 
signal, this is a code that somes and go's and has done since i got the 
car in january this year.
> 
> 2. Lambda is now showing up too, saying that it's out of range, when i 
try to clear this one it comes straight back on the vag com.
> 
> Have i screwed up the lambda sensor???? and should i replace the G28 
sensor???

1. If you get sporadic codes on a sensor, like the G28, it may be 
a sign that the sensor is on its way out (old age, wear, etc). 
However, it may also be triggered by some other sensor, as bad 
readings can cascade. If the G28 is original, it might be time 
to replace it.

2. The Lambda (O2) sensor out of range may be triggered by the 
misfire, as the too rich/lean condition causes the O2 sensor to
go out of range. I don't think it would kill the sensor, but 
that's a guess.  Fix the misfire, clear the codes, then see if 
the O2 sensor code returns.

-- 
Kent McLean
'94 100 S Avant, "Moody"
'89 200 TQ, "Bad Puppy" up in smoke