Low Rev Throttle Response, at a loss now!

A couple of updates,

ECU seems to be at fault, the diagnostics they use in the LR garage is kicking out what they're calling FFFF's errors dictating that its both faulty and also incapable of supplying much of the diagnostic data that the Nanocom cannot offer - so a replacement is en-route after which is can go back in for further digging.

Just something interesting, I read the injector codes using the Nanocom, got the following, interestingly, this seems to be from an NNN ECU?

Injector 1; NMBMF
Injector 2; LFNLM
Injector 3; LFNBM
Injector 4; NBFEF
Injector 5; NCBCF

According to the Nanocom manual older MSB ECU’s all end in A = 0 or 3 B = 1 C = 2 with the corresponding alterations for changing alpha to numeric.

I changed the values in line with it possibly being an NNN inside an MSB case to the following inline with their instructions, and it seems to be more responsive….…or am I way off the mark <likely>!:



I'll update again when the replacement ECU is installed.

Latest Nano Log

tweedandbriar said:

... and also incapable of supplying much of the diagnostic data that the Nanocom cannot offer...

Click to expand...

that^^ that seems a load of b0ll0cks to me(from theyr's side) cos there is no tool whatsoever able to offer more than nanocom for Td5 engine management diagnostics... not even the main dealer's T4 or Autologic... ... as long as the ECU is communicating with the scanner they should tell you the codes which made them blame the ECU unless they're full of sh... , the only codes pointing to a Td5 ECU fault are "topside switch failure" codes

tweedandbriar said:

I changed the values in line with it possibly being an NNN inside an MSB case to the following inline with their instructions, and it seems to be more responsive….…or am I way off the mark <likely>!:

Injector 1; NMBM2

Injector 2; LFNL8

Injector 3; LFNB8

Injector 4; NBFE2

Injector 5; NCBC2

Click to expand...

That's completely wrong... you have to remove the cover and see the real codes which are on the injectors...if they are green tops with the codes prviously saved then that's it but changing the last character just to match with what an EU2 ECU would accept is silly... if they are black tops with other codes those codes should be saved... if the ECU has a replaceable chip it's definitely not NNN

sierrafery said:

that^^ that seems a load of b0ll0cks to me(from theyr's side) cos there is no tool whatsoever able to offer more than nanocom for Td5 engine management diagnostics... not even the main dealer's T4 or Autologic... ... as long as the ECU is communicating with the scanner they should tell you the codes which made them blame the ECU unless they're full of sh... , the only codes pointing to a Td5 ECU fault are "topside switch failure" codes

Click to expand...

Okies....

sierrafery said:

That's completely wrong... you have to remove the cover and see the real codes which are on the injectors...if they are green tops with the codes prviously saved then that's it but changing the last character just to match with what an EU2 ECU would accept is silly... if they are black tops with other codes those codes should be saved... if the ECU has a replaceable chip it's definitely not NNN

Click to expand...

Okies x 2

So how would one know for sure an ECU is faulty per se?