Yet another MAF question.....? Loosing my hair!!

[freddy_t]

Hi guys,

Still new to this so please bear with me! I have tried looking on old posts but noone has the same trouble as me!

Right went down a dual carriageway today the car pulled nicely through 2nd I changed to 3rd and at approx 4000rpm the power went flat! ie no more boost!

I turned the traction control back on and it pulled fine briefly.

Now however 1st gear pulls fine to 6500rpm but 2nd pulls to approx 4 or 5000rpm and then power goes flat.

3rd gear is tempremental sometimes it pulls through the revs fine but on some occasions it goes flat at 4000rpm.

I find this strange as the TCS light hasnt come on and no other engine warning lights have come on!

My car is a completely standed 2002 Ibiza cupra however its got a Bailey DV30 fitted.

Thanks for any help or suggestions in advance as im tearing my hair out!!

Cheers Fred.

 

[Rick-24]

I would say get it on vag-com to see if there is any faults, could be anything really, boost leak, maf, sensors faulty. I must say my car feels like this sometimes, it feels flat sometimes tho ive not had any fault codes come or anything, im wondering if its goin into limp mode, i dont know how u tell when its in limp mode

 

[Russ_20vt]

Do you have a boost guage or Vag com software to get at, It could be a N75 problem causing you to over boost or underboost amking you go into a soft limp which would explain your flat spot.

 

[freddy_t]

Thanks for replying so quickly!

I decided to unplug MAF sensor and take it for a drive. Car pulled as normal in all gears and if anything even better!

However I do now have both TCS and another light on the dash its an engine shaped light - engine management???? Im unsure???

I do not have Vag-com, unsure on that area, can anyone shed some light?

Also whats an N75? no I dont have a boost gauge unfortunately!

I decided to put up with the poor performance and plug the sensor back in, is this wise and am I right in thinking Ill be avoiding overfuelling?

Also Ive heard it may be worth cleaning the MAF? If its worth trying that, what do I have to use and how?

Thanks again guys,

Cheers fred.

 

[jambojones10]

Unplugging the MAF brings on the tcs light and engine management light, these can be cleared using VAG-COM

 

[The_one]

Also Ive heard it may be worth cleaning the MAF? If its worth trying that, what do I have to use and how?

Heres a guide on what you need and how to clean your maf

http://www.seatcupra.net/users/pabs/guides/mafclean.htm

 

[freddy_t]

Cheers guys.

Ill have a go at cleaning it, is this a quick fix or a long term soloution?

I assume if this doesnt fix the problem then Ill need to replace the MAF?

Thanks again

Fred.

 

[flashbsd]

i cleaned mine when it was reading low, now its fine and pulling mucho torque with stock ECU or a jabba one

 

[T7ODD]

I'm having performance issues at the moment and think it must be eith re the MAF or N75 valve.
The cleaning guide looks good, i'd like to try it but where can you get 91% Isopropyl alcohol from? I assume it's not recommended to drink it

 

[Forbez]

I bought contact cleaner from Maplins, and that worked ok, but i think its a short term fix, and i ended up replacing the MAF.

T70DD that avatar piccy, do you have the full size piccy, and if so can you either pm me a link to it, or send me an email.

Cheers