Help epc light on and no power

[stu_no_1]

when i pulled out a junction and changed into second it was like the power cut from the car and then it was like the revs were being limited and would struggle to get past 3000rpm and when it was above that it felt like there was no boost is it the engine limiting the revs for some reason or is the problem bigger like turbo gone or that its a 2005 golf gti with 76k miles anybody help me out

[stealthwolf]

Yes - the car goes into "limp" mode when there's something wrong.

We need a clearer discription plus is your car manual/dsg?

Given that it's out of warranty, I'd say have a look at the VCDS register and see who is the closest to you and get it scanned for faults. Could be anything.

[stu_no_1]

its a manual and one of my mates has vagcom so he should be able to scan it for me
so its not likely to be a turbo problem then if the car is meant to do this when something is wrong

[stu_no_1]

also the car is due a service for the last 1500 miles just not had the cash to get it done plus it came on before 10000 miles the light

[edd666999]

yup no power above a set rpm and a top speed.

could be 1 of a million things, as small as a sensor or as big as your engine was stolen and replaced with a hamster.

[stu_no_1]

well the only thing that ive noticed weird under the bonnet is the oil cap has split in two again 3rd cap now is it possible the top half could have came off and hit summit and caused a fault

[edd666999]

split in 2??? never heard of this!

[vRStu]

Anything other than a fault scan is speculation so as above get your mate to help out.

[stu_no_1]

yeh the top part keeps coming off but the actual cap itself is still in the hole lol i need pliers to get it out

[Teutonic_Tamer]

With your broken oil cap sagas, me thinks it is something to do with incorrect pressures in the crankcase ventilation - which will lead to errors in the air/fuel mixture.

But as others have said, get it scanned with VCDS asap - and then post your fault codes.

[skifast]

a few weeks back after  topping up the oil (1 LTR over 5000 mls anyone know if this is ok) i started the car up BLOODY HELL the engine was hunting,chugging making a right racket ,it was then that i realised i had left off the oil cap.I couldnt beleve the difference it made.

[Teutonic_Tamer]

a few weeks back after  topping up the oil (1 LTR over 5000 mls anyone know if this is ok) i started the car up BLOODY HELL the engine was hunting,chugging making a right racket ,it was then that i realised i had left off the oil cap.I couldnt beleve the difference it made.

Haha - I've done that - ONCE.

And your oil consumption is well within spec and reasonable tollerances.

[Greeners]

Could be a coilpack.......

[v2brett]

faulty pcv maybe?  best way is to get the car scanned for any faults 1st 

[stu_no_1]

With your broken oil cap sagas, me thinks it is something to do with incorrect pressures in the crankcase ventilation - which will lead to errors in the air/fuel mixture.

But as others have said, get it scanned with VCDS asap - and then post your fault codes.

what would cause this problem and would it be an expensive fix