MAF?***New coil in***

[T_J_G]

Still having problems after Mr C Pack decided to commit suicide.  My engine light came back on after being re-set with VAGCOM.

Problems:
Car not vac'ing at -20 more like -16-17
Not boosting to it's potntial - this varies sometimes it peaks at 15 PSI sometime it only reaches 12 PSI
Slight flat spot normally when I pass 2000RPM not really noticeable
And a flat spot between 3,500RPM and 5,000 RPM shown by the RR day.

Slightly miffed as I didn't think MAF popped up the engine light? Don't want to 'waste' £80 on a new one. A possible ecplanation is didgy MAF and or boost leak somewhere? Going to get it on VAGCOM tomorrow and see what it throws up!

Tim

[jake]

Maf sensors dont normally pop up engine lights

But sounds like it defo could be!! You checked all boost pipes?

[GTiHigh]

Fuel pump and or filter maybe ?

[jake]

nah wont be any of them!

It defo sounds like the MAF Sensor or boost leak! if i had to put my money on it i would say MAF, why dont you take the MAF off and clean

it! it sometimes works,saves 80quid if if works

[T_J_G]

I may just do that tomorrow, clean it with carb cleaner? Changed air filter about a month ago to a PiperX one.

I'm going to get some Forge boost hoses and probably a MAF and go from there I think.

[jake]

Yeah i would defo do it in that order mate.

Clean the MAF, if that doesnt work replace it, if that doesn't work replace boost pipes. but if engine light has come on defo get it on

vagcom before you start spending!

[Steve_PD]

Carb cleaner will be alright, or borrow a mates and see how it runs  your lucky the diesel versions are £130 now 

[T_J_G]

Carb cleaner will be alright, or borrow a mates and see how it runs  your lucky the diesel versions are £130 now 

Yeah spose I could borrow Dans later. Will get it hooked up on VAGCOM and see what's happening. There is no rough idle though :S Maybe it's the early stages of MAF failure.

[Wazzzer]

MAFs CAN throw up an engine code if they are totally knackered, my mates 2.0 did.

It might be worth you disconnecting the battery for 10 mins or so to let the ECU reset everything, it might sort it out

[alex160]

im having probelsm at the mo which are similar to this, i get a lumpy tick over sometimes, the engine nearly stalls itself sometimes. Also when driving along i will occasionaly loose poer and it will bog down, and then power will return. from the documentation i got with the car it looks like its the orignal MAF, if so then i think its done its time