Misfire when under load VAGCOM RESULTS PG 2

[JJ_arosa]

n75 is new, get vag on it mate your just wasting money untill you find the problem

id say its the maf! as the filter was rite down in the wing, may be dragging up a bit of damp air and its caked the maf sensor ??

cant be major but get a vag com!!!!!!!!!!

 

[cupra_spencer]

n75 is new, get vag on it mate your just wasting money untill you find the problem

id say its the maf! as the filter was rite down in the wing, may be dragging up a bit of damp air and its caked the maf sensor ??

cant be major but get a vag com!!!!!!!!!!

Hi JJ

I tried unplugging the maf and running the car without it. it idled **** but still did the same misfiring over 9/10psi!

bought a vagcom cable today off ebay and downloaded the free software off rosstech.

hopefully it will have enough features to tell me whats wrong...

 

[JJ_arosa]

ye it should do mate, i think its eitha maf, pre-cat lambda.

vag com will tell you though mate

 

[cupra_spencer]

how much can i look to pay for each?

 

[wilz]

Think the precat lambda was £80, maf i bought ages ago maybe £70 there or there abouts.

 

[JJ_arosa]

make sure the MAF is a BOSCH one otherwise your wasting money on a cheap one.

take the filter back up in the engine bay mate, it will be maf friendly then less vibrations and move ment.
pretty sure the precat sensor was new when i bought the car 3 months ago, sure i saw a recipet for it in with the paper work.

 

[cupra_spencer]

make sure the MAF is a BOSCH one otherwise your wasting money on a cheap one.

take the filter back up in the engine bay mate, it will be maf friendly then less vibrations and move ment.
pretty sure the precat sensor was new when i bought the car 3 months ago, sure i saw a recipet for it in with the paper work.

i have already put the filter back in the engine bay mate. i dont think it is the MAF. i bought a vagcom cable and it arrived today with the software so ill get it plugged in tonight and see what its saying

 

[JJ_arosa]

i have already put the filter back in the engine bay mate. i dont think it is the MAF. i bought a vagcom cable and it arrived today with the software so ill get it plugged in tonight and see what its saying

gd gd let me know the outcome, could be you bought cheap coil packs even though they work it brings a code up im 99% if they aint genuine parts says open circuit i think

 

[cupra_spencer]

coilpacks cost me £30 each mate.

just ran the vagcom and got this. what you think i should do next?

VAG-COM Version: Release 409.1-US


Chassis Type: 6K - Seat Ibiza
Scan: 01,02,03,08,15,17,25,35,56

-------------------------------------------------------------------------------
Address 01: Engine
Controller: 6K0 906 032 AA
Component: 1.8L 20VT EU3 0002
Coding: 10500
Shop #: WSC 13873
9 Faults Found:
16487 - Mass Air Flow Sensor (G70): Signal too High
P0103 - 35-10 - - - Intermittent
17536 - Shareware Version. To Decode all DTCs
P1128 - 35-10 - Please Register/Activate - Intermittent
18010 - Shareware Version. To Decode all DTCs
P1602 - 35-10 - Please Register/Activate - Intermittent
16684 - Random/Multiple Cylinder Misfire Detected
P0300 - 35-10 - - - Intermittent
16687 - Shareware Version. To Decode all DTCs
P0303 - 35-10 - Please Register/Activate - Intermittent
16685 - Shareware Version. To Decode all DTCs
P0301 - 35-10 - Please Register/Activate - Intermittent
16686 - Cylinder 2 Misfire Detected
P0302 - 35-10 - - - Intermittent
16514 - Shareware Version. To Decode all DTCs
P0130 - 35-10 - Please Register/Activate - Intermittent
16795 - Shareware Version. To Decode all DTCs
P0411 - 35-00 - Please Register/Activate
Readiness: 0010 1000

-------------------------------------------------------------------------------
Address 03: ABS Brakes
Controller: 1J0 907 379 AF
Component: ASR 20 IE CAN 0001
Coding: 13404
Shop #: WSC 00000
1 Fault Found:
01276 - ABS Hydraulic Pump (V64)
16-10 - Signal Outside Specifications - Intermittent

 

[JJ_arosa]

get the full version next i would lol

abs is new hydraulic pump.

cylinder missfire i still think down to coil packs mate, as somthing is breaking down when the boost comes on hard after 9psi

 

[cupra_spencer]

"16487 - Mass Air Flow Sensor (G70): Signal too High
P0103 - 35-10 - - - Intermittent"

i think you may have been right with the first guess mate. MAF sensor. nothing should be braking down as the coils are brand new. all have 1 years warrentee.

listen to what i think and tell me if its a possibility or if im talking ****.

MAF sensor is knackered and is reading a high signal telling the car its not bringing in much air so its only putting a small amount of fuel in. then as the car gots ovre that majic boost number, the air/fuel ratio becomes way too lean so its not igniting properly causing the missfire.???

sound likely?

 

[wilz]

Well its def. your maf mate,

Misfire i woukd have said coil packs also but your saying their fine, are they genuine parts?
Did you change the sparkplugs while at it for piece of mind?

 

[cupra_spencer]

yes mate genuine parts and i paid £17 for a set of spark plugs too. just getting really pissed off now cause i bought the car and there is loads wrong with it.

 

[robreidmotors]

A bad MAF tends to give a lean mixture sometimes picked up by the lambda, so spencer has a good point.

Also, after replacing the MAF personally I would disconnect the battery or use vagcom to reset the ecu so it can relearn the right figures, then clean everything you can ie throttle body, use fuel cleaner. That way everything should be spot on.

 

[cupra_spencer]

ill give that a go mate. thanks.

if anyone has any more ideas please let me know!

 

[jam666999]

Definatly agree with it being the MAF i was get missfire codes when mine was knackered got it replaced under warranty as it was only 4 mnths old

 

[robreidmotors]

One thing, its worth taking the maf out and having a look at it, if the contacts are oilled up (oil from filter?) or carbonned up etc there is a chance you could clean them.

obviously might not work but if it does saves some cash.

 

[JJ_arosa]

as said from start change the MAF make sure its a BOSCHE one otherwise your wasting money!

then reset your ecu via vag com or disconnect the battery to clear fault codes then it will be fine.

and the joys of owning a cupra lol ecu light is your new best mate!

it not just you mate we all have our fair share of problems

 

[DPJ]

Mk2 Mafs are very different from Mk3 1.8T ones, Rob.

Also breach of buying /selling rules.

 

[JJ_arosa]

^^ beat me to it lol

mk2 are non turbo

mk3 turbo= alot more air gettinf sucked up