Author Topic: mk3 gti 8v No Power!!  (Read 3681 times)

Offline mattyjcooper

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mk3 gti 8v No Power!!
« on: 25 May 2017, 20:21 »
Help meee
Ive got big problems. Or probably a small one. I cant find a thread anywhere that relates to me.

I do try to do as much work myself so i have basic knowledge.

I fitted an aftermarket air filter. The ramair foam one.

The cars been driving fine since i fitted it which was about 3 weeks ago.

Now i have suddenly lost all power when under load. The car revs fine when in neutral but as soon as you drive all power is lost. The air filter is alot louder than it was before the loss of power, much louder!

The new filter had no where for the air intake temperature sensor to go so i just unplugged it and tucked it away. Since the problem i have plug the sensor back in but just loose in the engine bay.

Would my fuel mixture of messed up and now the car is just completely confused on what mixture it needs. So its being starved of fuel?

My engine seem to have a wobble which i havent noticed before. Maybe a mount has broke and somethings been dislodged?

Help pleeease
Many thanks
Mk3 gti 8v

Offline lemski

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Re: mk3 gti 8v No Power!!
« Reply #1 on: 25 May 2017, 20:25 »
You mean maf sensor unplugged? Iat sensor cause abit flat but the lambda should sort fueling.
Does it misfire at all?

Offline mattyjcooper

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Re: mk3 gti 8v No Power!!
« Reply #2 on: 25 May 2017, 21:38 »
No the maf sensor is still plugged in. Its the sensor on the original air box, air temperature sensor i disconnected.

No doesnt misfire atall.
Engine bay seems to be very hot. Mahbe its just the weather 🌞
« Last Edit: 25 May 2017, 21:46 by mattyjcooper »
Mk3 gti 8v

Offline lemski

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Re: mk3 gti 8v No Power!!
« Reply #3 on: 26 May 2017, 07:20 »
Have you had it scanned. Id maybe look at changing the temp sensor. 4 pin. Think its blue. If the ecu things its cold itll over fuel it or if its warm when its not itll put less fuel in it it

Offline mattyjcooper

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Re: mk3 gti 8v No Power!!
« Reply #4 on: 26 May 2017, 08:27 »
Will be going to the garage after work to get it scanned.
The air temp sensor? I had it disxonnected for 3 weeks. And it was running ok.

When i say it has no power.

With full throttle the car slowly creeps up speed. Will take around 10 seconds for each gear(low gears). Rather than the 1 - 2 seconds before..

Im about as fast ad a 50cc moped atm.. Literally

My crank case breather is also split, surely that wouldnt cause a massive power loss?
« Last Edit: 26 May 2017, 08:31 by mattyjcooper »
Mk3 gti 8v

Offline itavaltalainen

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Re: mk3 gti 8v No Power!!
« Reply #5 on: 26 May 2017, 08:48 »
Where are you?
No need to go to garage for a scan..... there are quite a few VCDS users around the country who will scan it for beer tokens. Me included....
2019 Seat Leon ST FR DSG 135kW - eclipse orange - 23k miles

Offline mattyjcooper

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Re: mk3 gti 8v No Power!!
« Reply #6 on: 26 May 2017, 09:04 »
Im in oxford.
Luckily for me my dads best mate has a garage and bodyshop. So wont be charged, will just sort some tokens for him hahaa

Much appreciated though. Are you close for future?

Mk3 gti 8v

Offline itavaltalainen

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Re: mk3 gti 8v No Power!!
« Reply #7 on: 26 May 2017, 13:04 »
Im am only in Wantage. So pretty close to you.
If you are free at some point happy to help you out. Wanted to try a new toy as well on a mk3 :)
2019 Seat Leon ST FR DSG 135kW - eclipse orange - 23k miles

Offline mattyjcooper

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Re: mk3 gti 8v No Power!!
« Reply #8 on: 26 May 2017, 15:39 »
Well ill be home all night as im avoiding driving. Will run the car uo to the garage briefly, hoping i can get plugged in and even on the ramps to look for a broken engine mount. Other than that ill be in kidlington with the car if your free and want to play.
Unfortunately im at this common people festival all weekend so cant play with the car.

New toy to try??
Mk3 gti 8v

Offline mattyjcooper

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Re: mk3 gti 8v No Power!!
« Reply #9 on: 26 May 2017, 19:46 »
After days of internet research and days of thinking.
I felt the pressure coming out my exaust.. Pretty much nothing!  Bare in mind i had a new back box 3 weeks ago.

So i seperated the cat and middle box. Pressure coming ou the cat. So must be the middle box!

Yep.. Pipes full of hair or w.e it is..
So now got a coat hanger pulling the junk out my back new back box. Hahaaa

Thank f**k for that!
Thanks for the help though guys..
Mk3 gti 8v