Thanks Bankz - yeah i'm exactly the same as you on all the points you mentioned! Maybe i'll just stick with it. after all you don't but a defender as a 'fast car'! There are a few more mods I'm thinking on mine such as a decat and larger intercooler - hopefully these will help. thanks for...

turbo moved freely but put a bit of wd40 on ends of rod just to be sure... Any other ideas? Really appreciate everyone being so helpful thanks!

Turbo moving completely freely. Used some wd40 on it anyway. Just thinking from a mechanical point of view what the problem could be? As I mentioned, it had full diagnostics whilst driving and all numbers were perfect...

I'll go try the turbo now. Thanks everyone!

Of course - really appreciate any help! Once ticking over even if you floor it it is painfully slow then as soon as turbo kicks in wow its quick... As far as starting it goes, it takes a while before the turbo is able to spinn up so accelerates poorly regardless of engine rpm (this onky...

Completely see your point. Everyone said to me it was running fine despite the fact that it clearly had better performance with the maf unplugged. They were basing this on car diagnostics and a full investigation with no problems found. They said it must be something ecu related. Thing is it...

No takes about 10 secconds of 'thinking time' regardless of pedal position before the emgine becomes responeive . Yes it is.

Hi all, I've just had a stage 1 remap on my 2001 defender TD5. Previously it was running poorly with the MAF sensor plugged in so bought a new genuine sensor and replaced it however even then the car still ran better with the MAF unplugged. (after all error codes cleared ect was still...

hi shifty - yes checked all that. Local GArage had a look and said they can find nothing wrong.... All data from MAF sensor perfect. They think down to faulty ECU - Do these ever just fail?

So just plugged in diagnostic test and cleared all error codes with new MAF. Car starts well but still no low end power - turbo takes ages to kick in? Once it does car runs great. Is there any way to make the turbo kick in lower down? As I understand it in a defender TD5 all exhaust is pushed...

yep course.... only fits in one way.

So to add to the confusion I've just cleaned the MAP sensor (Was pretty clean when I took it out tbh) and the performance is marginally better... Truck still pretty much unsafe on the roads as just doesn't have any low end acceleration at all. Goes like bat out of hell when MAF unplugged...

Will give it a go thanks - Could this cause similar symptoms? i.e car functions fine with MAF unplugged?

Hi all, To cut a long story short, I had terrible cold start acceleration performance. 2001defender TD5 Car was a menace to pull out into the road as took good 20 sec to get any sort of acceleration or power.... Anyway I unplugged the MAF sensor and immediately got unbelievably good...

could it be an AAP problem? - just been reading about it for the first time...

Hi everyone, So The replacement MAF sensor arrived today and I just fitted it (a genuine expensive one from Island 4x4) Started the car and starts perfectly but now there is a huge flat spot at low end RPM, Engine doesn't stall or anything but with the MAF plugged in even when you floor it in...

thanks everyone - will buy and hope fixes problem. Such a great forum everyone is so helpful! Alastair

thanks guys will do

Thanks for the advice everyone! Could anyone post a link to a genuine one? All the cheap ads everywhere insist they're 'genuine' can't tell what to buy! Cheers

Hi all, Had many cold start problems with my defender. i.e. stalling and low power output. Suspected faulty MAF and simply unplugged. Car has completely come alive with great acceleration and perforamance. I removed my EGR valve ages ago but is the MAF still providing important...