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Diabolical running issues


jasond1989
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Hi all,

I have a Uk2000 turbo, i have not long owned this vehicle but thought i had a decent runner until things started going down hill.

I had to replace the turbo with another td04 because of a lot of play, I have cleaned the throttle position sensor and the one above it (plunger type) as well as replaced the knock sensor - all was running ok.

I took it for a spin and noticed its still hesitating from 2000rpm up to 3000rpm - after that its fine, i returned to mates garage and left the car for a few hours and then drive home, its got worse, the car is running lumpy to the point of cutting out the idle is all over the place and there is a nasty burny smell coming from the exhaust - I am stumped as well as my mate too, if anyone could shed some light on this it would be much appreciated.

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i've had a replacement inlet pipe put on last week, i originally thought it was fuel starvation or along the lines of spark plugs failing between 2k-3krpm until an awful 5 minute drive home without boost started

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Was an ecu re set done after changing the sensors ?

The tps and knock sensor have to go back in at exactly the same position as they come out, otherwise it will run crap,

Sent from my SM-G930F using Tapatalk

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update

after using the cars built in obd here are the codes as follows:

22 Knock Sensor 
23 Mass air flow sensor 
31 Throttle position sensor 
45 Map sensor 
24 Idle air control sensor (usually companied by running too fast/Slow)

32 O2 Sensor

i can only assume the knock sensor is coming up as its detected poor running, 

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i removed the negative wire, I took the car out for a drive and it all started playing up again, kangarooing between 2k-3k, there is no pipes split, the boost solenoid has been cleaned out, the idle sensor above the throttle position sensor was also cleaned out with carb cleaner

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