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P053F00, P08700, PO46100. Plz Help, car pausing/jerking/stopping at 3k rpm, now barely starts? '17 GTI 6MT

shovelhd

Autocross Champion
Location
Western MA
So 3 weeks ago, I flashed the tune back to stock before taking it to the mechanic for the clutch failure. It's still currently stock flash tuned.

I'll update with codes..
OK, so he sold you the AP with the car. Flashing back to "stock" is flashing back to a COBB con-rom simulated stock map. If you unmarry the AP, the OEM map will be installed in it's place. Worth a try.

Diggs is onto something with the fuel level. Could the previous owner have replaced the LPFP for his Stage 2 tune? He would need to if he was running E85, right? Something might be wrong there. The other codes could be HPFP related, and could be low because of the LPFP.

At least the dealer can't say "no codes found".
 

Daks

Autocross Champion
Location
Toronto
Car(s)
GTI PP
OK, so he sold you the AP with the car. Flashing back to "stock" is flashing back to a COBB con-rom simulated stock map. If you unmarry the AP, the OEM map will be installed in it's place. Worth a try.

Diggs is onto something with the fuel level. Could the previous owner have replaced the LPFP for his Stage 2 tune? He would need to if he was running E85, right? Something might be wrong there. The other codes could be HPFP related, and could be low because of the LPFP.

At least the dealer can't say "no codes found".
No need for LPFP with stock turbo and E85. HPFP yes.
 

Bigsmallguy

Ready to race!
Location
Los Angeles, CA
Car(s)
GTI mk7
I see everyone saying HPFP and yet I'm seeing a level sensor error. If the fuel reading is inaccurate and you're bombing up a hill at full throttle with no gas, well......
It was like 70% throttle, half tank of gas. Light was turning yellow, barely stepped on it, only like maybe 70% down, for 2 seconds maybe. Then boom car stops.

So wait, I'm not sure what you are getting at? More of a LPFP than HPFP bc of level sensors? I'm trying to research more on the codes
 
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Bigsmallguy

Ready to race!
Location
Los Angeles, CA
Car(s)
GTI mk7
What tune is on it? What tuner?
It was APR stg 1 high torque when he sold it to me, before when he had the car prior to sale, he had it at apr stg 2 with a borla exhuast. I bought it in May. Then in early July, I flashed back to stock bc the clutch felt really bad, so no tune currently.
 

Bigsmallguy

Ready to race!
Location
Los Angeles, CA
Car(s)
GTI mk7
OK, so he sold you the AP with the car. Flashing back to "stock" is flashing back to a COBB con-rom simulated stock map. If you unmarry the AP, the OEM map will be installed in it's place. Worth a try.

Diggs is onto something with the fuel level. Could the previous owner have replaced the LPFP for his Stage 2 tune? He would need to if he was running E85, right? Something might be wrong there. The other codes could be HPFP related, and could be low because of the LPFP.

At least the dealer can't say "no codes found".
Idk, I texted the previous owner if he ever had a recall on the fuel pumps, and that codes came up. Sonofabi*** didn't respond of course...
 

Bigsmallguy

Ready to race!
Location
Los Angeles, CA
Car(s)
GTI mk7
500ish? You can change it on your own, super easy.
Okay is it about the same cost for a LPFP? I don't have many tools, and my wrists are shaky from 2 surgeries on both wrists. But idk I may look into doing it. I have a local cheaper german specialist, or should I take it to the dealer? I also bought a used extended 3rd party warranty that covers fuel pumps. Not sure if I should go to the dealer or my local guy.
 

Bigsmallguy

Ready to race!
Location
Los Angeles, CA
Car(s)
GTI mk7
Guys I also bought this premium used car warranty that seems to cover everything, I’ll attach a pic of it here . Do you think this will cover all costs related to such codes? The clutch screwed me royally, I just can’t pay for another big maintenance. The previous owner did everything right maintenance wise, as I’ve had a previous mk7 golf tsi base ( not gti) and am familiar with the usual carbon buildup and water pump issues etc. So I asked him all about how to prevent such blah blah, he knew everything which is pretty simple really. Oil changes more frequent than recommended and great gas.

But idk how much more this car will cost me…

Here’s a pic of my extended warranty coverage, I removed the tune. But crap I told the mechanic if he thought the clutch may have burned out bc of the prior tune, which warranty doesn’t cover tuned cars.. ugh now idk if I should even bring it to that mechanic …

And I also want to say I appreciate everyone’s input, I mean it means a lot this is all so helpful. 🙌 mk7 forum

CAE287B1-CB3B-4796-B4F3-DDE955EB454D.jpeg
 

Daks

Autocross Champion
Location
Toronto
Car(s)
GTI PP
Okay is it about the same cost for a LPFP? I don't have many tools, and my wrists are shaky from 2 surgeries on both wrists. But idk I may look into doing it. I have a local cheaper german specialist, or should I take it to the dealer? I also bought a used extended 3rd party warranty that covers fuel pumps. Not sure if I should go to the dealer or my local guy.
You can do it. 15 min swap. If you want to pay for shipping and duties from Canada and back, I have a hpfp I can send you to test out if it works. And then if that's the problem, just buy the new one. But I'm not sure how much duties and shit would be.
 

Bigsmallguy

Ready to race!
Location
Los Angeles, CA
Car(s)
GTI mk7
You can do it. 15 min swap. If you want to pay for shipping and duties from Canada and back, I have a hpfp I can send you to test out if it works. And then if that's the problem, just buy the new one. But I'm not sure how much duties and shit would be.
Gotcha man I really appreciate the offer , I'm going to look more into it and see if my extended warranty will cover repairs. Thank you I'll keep you updated
 

xabhax

Drag Racing Champion
Location
Manchester Township, New Jersey
Car(s)
15 GTI
One code for fuel rail pressure and another for fuel level. Seems odd two none related systems to go bad at the same time. And it only happening after the engine bay was worked it. I would take it back to the shop who did the clutch. Maybe harness was pinched, not attached properly and rubbed through. Just a thought before you go spending money
 
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