MK5 Golf GTI

All Things Mk5 => Modifications & Technical Area => Technical Workshop => Topic started by: H17YD_L on February 17, 2014, 08:36:35 am

Title: Has my throttle body gone?
Post by: H17YD_L on February 17, 2014, 08:36:35 am: Had a bit of trouble last night with the car. I booted it from a set of lights and it got to about 50mph and felt like I hit a brick wall, lost all power and no turbo, at first I thought a hose had blew off but the car was struggling to tick over really lumpy and lots of popping.

Called the AA and my mate to bring my VCDS when I scanned the car it had 5 faults to do with the throttle; Throttle body position sensor, throttle pedal something etc. I saved and cleared them, then started up it ticked over fine but when it started it did hunt about for a few seconds before settling. I went for a quick drive and it all seemed fine, coming back I gave it a little burst in 3rd soon as it come on boost all the engine lights came on, well the ESP and tyre pressure ones.

I tried to clear the fault and thought I'll at least be able to get it home taking it easy, the code would not clear and there was only 1 in the engine module which is P0123 - Throttle Position Sensor (G69): Signal too High

By this time the AA bloke was here offering his wisdom: "our gears not as good as that" - LOL Anyway he thought it might of been the pedal at fault as when he did a live reading of the pedal it was saying 99.4% and would not change when he moved the pedal.

I personally think it could be the throttle body, any other thoughts would be appreciated!
Title: Re: Has my throttle body gone?
Post by: bacillus on February 17, 2014, 09:47:17 am: Sounds very much like you TB sensor is goosed...

Do you have the original fault codes?
Title: Re: Has my throttle body gone?
Post by: H17YD_L on February 17, 2014, 09:48:50 am: I can get them tonight I've still got the list I saved on my laptop at home, will post them up
Title: Re: Has my throttle body gone?
Post by: beetie on February 17, 2014, 10:31:37 am: More than likely the throttle body, I had mine go. O got my replacement from Alex, aks.
Title: Re: Has my throttle body gone?
Post by: H17YD_L on February 17, 2014, 10:47:15 am: Cheers mate, gunna take it off tonight to see if there is anything physically broken or if it's just stuck and needs cleaning. If not its looking like a new one, or a second hand one off ebay. Will any throttle body for the TFSI do? As in one that came of a BWA engine for example.
Title: Re: Has my throttle body gone?
Post by: beetie on February 17, 2014, 11:02:44 am: It's the sensor that misreads. Looking at it probably won't show anything.

I'd ring Alex at Aks. He will supply you with the correct throttle.
Title: Re: Has my throttle body gone?
Post by: H17YD_L on February 17, 2014, 12:09:30 pm: Ah Right! I was thinking I might be able to see the flap stuck or something. I'll price up a new one
Title: Re: Has my throttle body gone?
Post by: vRSAlex on February 17, 2014, 12:43:07 pm: Quote from: H17YD_L on February 17, 2014, 12:09:30 pm
Ah Right! I was thinking I might be able to see the flap stuck or something. I'll price up a new one

What plugs are you using?

I have a latest Q TB here that's done 7K for sale. You have to use the latest revision TB if you get these codes.