Running on 4 of 8!
Running on 4 of 8!
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Hawkeye1922

Original Poster:

136 posts

206 months

Tuesday 10th August 2010
quotequote all
OK here's a good one for a rainy night:

1998 4.2: car was running slightly (but not badly) rough, I spotted a noisy t-pot so replaced both and all the HT leads. went for a drive to warm the old girl up with a view to setting the new t-pots.

b*gger all power - struggling to pull away at roundabouts confused

tinkered with everthing at idle per the usual process - I succeeded in getting t-pots around 17% (where they were before) and an idle of 1000rpm. adaptives around zero, but the overall fuelling is up at least 50% at idle according to the realtime data.

lambdas are toggling as normal.

I then unplugged each injector and discovered that only the front 2 on each bank are contributing at idle!

any ideas? thanks chaps...

Poledriver

29,591 posts

223 months

Tuesday 10th August 2010
quotequote all
Coil pack?

Hawkeye1922

Original Poster:

136 posts

206 months

Tuesday 10th August 2010
quotequote all
Don't think so - it's 2 cylinders from each coil pack

I'm just wondering if the injector pulses from the ECU are split between front and back - 2 chips or something?