won't pull past 5000rpm

[datdrift]

i'll have a look.....
just fitted a new fuel filter, and found the bit of fuel hose below it was well craked and perished, so put a new bit on, started her up and it started idleing at about 1500 - 1800rpm when before its always idled at 8-900rpm

[datdrift]

i took all the injector plugs off and gave then a little scrub with a bit of sand paper, re-gapped all the spark plugs and its still no better....... + its still ideling between 1500 - 2000rpm.....

[northerner]

Is that Idle from cold as the Choke should be on. Also could be an Air leak from aroudn the Turbo etc

[datdrift]

idle from warm and still doing it when hot, i don't think the choke works, cos its never idled higher than around 1000rpm.....could be an air leak, but all i changed was the fuel filter and one fuel pipe so i dident disturb any boost pipes......
in second gear its more like 4 - 4500rpm that it hesitates at
anyone think of any parts i should try changing as ive got a few spares

[northerner]

Fuel pressure regulator or blocked fuel pump could be causes. High idle though makes me think choke unit !

[datdrift]

just ran the diagnostics and got 3 codes.....
23 - throttle valve or circuit
24 - ????
31 - no fault

[datdrift]

changed the throttle position sensor, and it sort of fixed the idle.....for a bit, but then it started rising again. did the diagnostics again and it just came up 44.....