keithjh Posted January 5, 2009 Share Posted January 5, 2009 Hi All, Any advice comments on the below greatly appreciated. Vehicle is a 300 TDi Disco with the dreaded EDC system, anyway its the wifes daily motor i drive it occasionally. Over the last few weeks it had starting problems which have now been sorted out, after fitting new starter and sorting out the earths, it now starts fine. Took it out yeasterday for a longish run no problems until i want to get it past 70mph, it just gets to 72 then will not get any more out of it, used to be fine sit all day at 75-80 on the motorway but not any more. Anyway a new OEM lift pump fitted and the tank sender renewed this morning as the pipes were pretty bad (thinking pin hole drawing air), no diffrerence, does not smoke or run rough at tickover so not suspecting injectors. So whats left other than injector pump, or air flow meter (but how the hell do i test that?) All suggestions ideas gratefully accepted, as i`m off to Bosnia in Feb and need to get it sorted Regards Keith Quote Link to comment Share on other sites More sharing options...
TheRecklessEngineer Posted January 5, 2009 Share Posted January 5, 2009 Have you changed the fuel filter and cleaned out the sedimenter? It sounds like fuel starvation to me.... Quote Link to comment Share on other sites More sharing options...
sotal Posted January 5, 2009 Share Posted January 5, 2009 I'd look at the Sedimentor, as James says - They're often forgotten about for years. Don't undo the drain though - drop the whole bowl off by undoing the 11mm nut on top. When I had Fuel Starvation on mine I got lots of white smoke. That was from a clogged lift pump. It should easily go over 100mph, but I think it requires kickdown, just wondering if your kickdown system has got messed up? Does it kickdown for overtaking still? Maybe the cable just needs setting up? Just trying to think of any possibilities Quote Link to comment Share on other sites More sharing options...
keithjh Posted January 5, 2009 Author Share Posted January 5, 2009 I'd look at the Sedimentor, as James says - They're often forgotten about for years. Don't undo the drain though - drop the whole bowl off by undoing the 11mm nut on top.When I had Fuel Starvation on mine I got lots of white smoke. That was from a clogged lift pump. It should easily go over 100mph, but I think it requires kickdown, just wondering if your kickdown system has got messed up? Does it kickdown for overtaking still? Maybe the cable just needs setting up? Just trying to think of any possibilities All filters are new cleaned out sedimenter about 2 years ago, will do it in the morning Kickdown works fine no problems their Keith Quote Link to comment Share on other sites More sharing options...
keithjh Posted January 6, 2009 Author Share Posted January 6, 2009 I'd look at the Sedimentor, as James says - They're often forgotten about for years. Don't undo the drain though - drop the whole bowl off by undoing the 11mm nut on top.When I had Fuel Starvation on mine I got lots of white smoke. That was from a clogged lift pump. It should easily go over 100mph, but I think it requires kickdown, just wondering if your kickdown system has got messed up? Does it kickdown for overtaking still? Maybe the cable just needs setting up? Just trying to think of any possibilities Cleaned out the sedimentor bowl , had some carp in but not much, still no difference any other ideas Keith Quote Link to comment Share on other sites More sharing options...
GBMUD Posted January 6, 2009 Share Posted January 6, 2009 The exhaust could be blocked due to a collapsed catalyst or silencer... Chris Quote Link to comment Share on other sites More sharing options...
Fatboy Posted January 6, 2009 Share Posted January 6, 2009 How about the hoses from turbo to intercooler and the intercooler to the inlet manifold? I'd remove them and check the inside for delamination etc and also have a peek in the inlet to see if it is bunged up with soot... Quote Link to comment Share on other sites More sharing options...
RangeyRover Posted January 6, 2009 Share Posted January 6, 2009 My dad had this with a collapsed catalyst on a TD5 Check for exhaust obstruction. Quote Link to comment Share on other sites More sharing options...
keithjh Posted January 6, 2009 Author Share Posted January 6, 2009 My dad had this with a collapsed catalyst on a TD5Check for exhaust obstruction. Cat removed years ago so its not that-wish it was easy to fix Keith Quote Link to comment Share on other sites More sharing options...
sotal Posted January 6, 2009 Share Posted January 6, 2009 So does it perform fine up to 72mph? As in not sluggish at all? I believe from reading someone elses post that the MAF can be disconnected temporarily and that the ECU then uses a default value, so you could try that - have a search of the disco forum first just to check. Can you feel all the gears engaging? From memory you should feel, 1st, 2nd, 3rd, 4th then a final change as it locks - maybe your not getting that final locking? I think it's a kind of viscous lock. Other than that does it really matter? It's not legal to drive above 70mph in this country anyway and I'm sure Bosnia has a max speed of about 50mph? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.