GolfGTIforum.co.uk
Model specific boards => Golf mk4 => Topic started by: vwvwvGTI on 09 March 2010, 10:37
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Having serious problems with my MK4 Golf GTI 2.0i
The car drives great except now if I try to "floor it" when overtaking etc, it seems to loose power and stutters, yet if I accelerate slowly it runs perfect!
the loss of power (engine stuttering) really worries me. also if I rev it it sounds as though there is a hole in the exhaust, but I have had it up on a lift and couldnt see any!?!
I used the VAG-COM cable and soft and my car read back...
16806 - Main Catalyst: Bank 1 : Efficiency Below Threshold :cry:
P0422 - 35-00
can anyone tell me what would cause this stuttering? and if there was a hole somewhere in the exhaust system, such as the manifold, would it cause this loss of power affect?
any help or advice would be great !
Thanks in advance!
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start your car put your hand over the tail pipe if the car is close to stalling no hole if it ticks over as normal hole as the gasses are escaping
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Good Morning Oliver,
Thanks for the info I just tried it and the car stalled, so im guessing its no holes in the pipe?
Any other ideas? :cry:
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vag com
as i would have said
maff
dirty throttle body
coil pack
plugs
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i would say MAF & plugs myself
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Firt off let me thank you for trying to help! I posted so many times and with no reply :cry:
second, Could the MAF really cause the loss of power, and by this do you mean the MAF sensor???????
I also wondering could anyone illustrate with pics or diagram, where the following are located? plz?
> dirty throttle body
> coil pack
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mate use the search section or the maintanance section under mk4 the coil pack is the part that fits over the spark plug you will have 4 of these check to see if its fully pushed down or look for any cracks in the unit.
if the maff is dirty it will give poor running as said follow the links and give it a good clean
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Pretty sure the 2.0 only has an ignition coil and not seperate coil packs
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glad your on to share your knowledge on this.
I have the gti T had a few running issues so just putting ideas forward.
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glad your on to share your knowledge on this.
I have the gti T had a few running issues so just putting ideas forward.
sadly my knowledge is limited - wrong fuel lol
I'd say you're on the right lines though :smiley: Only thing i would say is with regards to the cleaning the MAF you can over clean it and therefore finish it off quicker
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Thanks so far guys, but my GTI is not a turbo (I dont think) under the hood it just states "2.0" on the engine cover.
Im in the process of reading up on the MAF cleaning, so thanks Oliver, ill let you know the outcome.
Will prob be tomorrow before I can let you know if this fixed it or not.
Thanks again Guys!
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Thanks so far guys, but my GTI is not a turbo (I dont think) under the hood it just states "2.0" on the engine cover.
Im in the process of reading up on the MAF cleaning, so thanks Oliver, ill let you know the outcome.
Will prob be tomorrow before I can let you know if this fixed it or not.
Thanks again Guys!
without sounding too harsh you've ended up with the runt of the Mk4 engines :sad:
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Pretty sure the 2.0 only has an ignition coil and not seperate coil packs
Correct :smiley:
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guys we all know that but this poor guy doesnt need to hear it does he.
:laugh:
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Pretty sure the 2.0 only has an ignition coil and not seperate coil packs
Correct :smiley:
Ive got a 2.slow aswel, we get some stick for the GTI badge being on the back :embarassed:
Ive went through 2 MAF's so it could be that,
Ive had a mis-fire and that was plug leads so i changed all 4,
My lambda sensor went and that made a big difference to acceleration and MPG,
i do the throttle body every now and again coz sh!te builds up a fair bit
and when i got the car there was 2 cracks in the manifold so if i were you id just do the job and take it out, have a look and get it welded up if that is the problem
I have had a loss of power when shiftinmg up to 3rd after red lining a few times and i dont have a clue what that it?
Good luck with your problem thou :smiley:
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dead cat, duff o2 sensor, ropey maf, lazy injectors
can you do datalogging with the vagcom cable you have?