more problems loss of power

dandan1 said:

hi guys, me again :crazy:

I have managed to sort most problems on my disco now, but I have 1 more I don't seem to be able to find a solution for.
it all drives fine and have loads of power up until approx. 2500-2900rpm then it seems to just hit a wall and wont go over 3000rpm. it revs fine when stationary so guess not the pump. have changed MAF and checked all hoses, wastegate has been freed up, so could it be the modulator?
also when on tickover the rev counter moves up and down slightly is this normal?
any help would be great as I am supposed to be towing my caravan over easter and worried about the loss of power with weight on the back.

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Bennehboy said:

It could be the modulator or the vac hoses to it, they are cheap so it's worth replacing anyway.

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dandan1 said:

hi guys, me again :crazy:

I have managed to sort most problems on my disco now,

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sierrafery said:

were by any chance the injectors involved somehow?... cos the symptom you describe is specific for not properly coded injectors too.

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dandan1 said:

Right. Think I have finally solved it. Whilst checking wastegate again the rod looked really short, so I undone the lock nut and turned the adjuster to find a painted line. I guess the previous owner wanted more boost so adjusted it 2 much. Seems to be fine with half a turn back.

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Gkz8322 said:

Hi I'm new to this forum game I was wondering if any one can help I'm unsure if I'm posting this in the wright place but il try any way
I own a 2003 discovery td5 you start it up and it's sounds fine but after about ten minutes at a stand still it starts to tick over funny like I've put a set of race cams in it it starts juddering and when going to pull of it's judders like mad up to 3000 rpm I've changed ecu fuel pump injectors harness fuel filter cleaned egr and still juddering it's sending me crazy as and I know there's nothing major wrong as u get in the car 1st thing in the morning it runs great for so long no faults at all then randomly runs crap
Please help

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Gkz8322 said:

Hi thanks for reply yes they was changed with everything else it's really odd how it works great one minute then the next its juddering along with a sort of misfire

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Gkz8322 said:

Yes Jameson's 4x4 done the work they used the parts from another discovery td5 that was running witch they was breaking They got mine running with there parts and still same problem there's a video of it on you tube
https://www.youtube.com/watch?v=FEnAaT9Vycw&feature=youtube_gdata_player
You will here the tick over change sound in the first couple of seconds
This videos after a 15 minute drive

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