www.tdiclub.com

Economy - Longevity - Performance
The #1 Source of TDI Information on the Web!
Forums Articles Links Meets
Orders TDI Club Cards TDIFest 2016 Gone, but not forgotten VAG-Com List Unit Conversions TDIClub Chat Thank You




Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > Audi SUVs (Q7 & Q5)

Audi SUVs (Q7 & Q5) Discussions area for Audi Q7 and Q5 TDI (2009+ in Canada & the US).

Reply
 
Thread Tools
Old July 1st, 2017, 13:26   #1
vtek71
Member
 
vtek71's Avatar
 
Join Date: Apr 2011
Location: Costa Mesa, CA
Default Q7 HPFP Failure Right Before Buy Back

Guys i'm in a bit of a bind. my hpfp failed literally 1 month before the buy back of my q7 tdi was to happen. Stealership quoted 18,000 to replace entire fuel system. Being i'm at 140k miles, no warranty applies. Looking for the cheapest solution to just get it to idle. Thats all that needs to happen for VW to buy it back. Can i get away with just changing the HPFP alone? Keep in mind i just need to get it to run for a little bit to qualify for the buyback.
thanks!
__________________
*2001 2 door Golf, 5spd, RC3, EGR Delete, VR6 clutch, straight pipe exh, Bilstein TC's, H&R Sports, HID's, Aristos, .622 5th gear....
vtek71 is offline   Reply With Quote
Old July 1st, 2017, 14:09   #2
mjhandy
Veteran Member
 
mjhandy's Avatar
 
Join Date: Jun 2007
Location: Kitchener, Ontario
Default

No clue. When it shreds it sends shards through the system. You could try just replacing the pump, but it's a possible rabbit hole.
__________________
Mark J. Handy
HEX + CAN usb
2009 Touareg TDI
2000 Jetta TDI, 568K km, Bye bye

mjhandy is offline   Reply With Quote
Old July 2nd, 2017, 05:15   #3
CoolAirVw
 
CoolAirVw's Avatar
 
Join Date: Nov 2005
Location: Kansas City Missouri
TDI(s): Jetta
Fuel Economy: 40
Default

One of my customers needed to get his Jetta running for buy back and we tried HPFP, but it didn't help, so we had to put injectors in to get it running. I would guess you would have to do both.
__________________
Richard. ASE Certified Master Auto-Technician with L1 Advanced Engine Diagnostic Rating. ATRA Certified in Rebuilding, Diagnosing & Installing Transmissions.

LOOK AT MY YOUTUBE CHANNEL -->
https://www.youtube.com/user/CoolAirVw/
Now offering Malone Tunes!..............http://www.kansascitytdi.com/

Last edited by CoolAirVw; July 3rd, 2017 at 13:00.
CoolAirVw is offline   Reply With Quote
Old July 2nd, 2017, 13:59   #4
vtek71
Member
 
vtek71's Avatar
 
Join Date: Apr 2011
Location: Costa Mesa, CA
Default

Well i replaced the HPFP, and still no start. The fuel pressure is only reading 34 bar and the required demand says around 250-300. Seems to be getting fuel supplied to the HPFP ok, but just not building pressure. Think the regulator could be stuck open from the debris that passed through it?
__________________
*2001 2 door Golf, 5spd, RC3, EGR Delete, VR6 clutch, straight pipe exh, Bilstein TC's, H&R Sports, HID's, Aristos, .622 5th gear....
vtek71 is offline   Reply With Quote
Old July 2nd, 2017, 14:14   #5
mjhandy
Veteran Member
 
mjhandy's Avatar
 
Join Date: Jun 2007
Location: Kitchener, Ontario
Default

Is it possible the flush the system?
__________________
Mark J. Handy
HEX + CAN usb
2009 Touareg TDI
2000 Jetta TDI, 568K km, Bye bye

mjhandy is offline   Reply With Quote
Old July 2nd, 2017, 15:14   #6
2micron
 
Join Date: Mar 2012
Location: Canada
TDI(s): None
Default

One or more injectors is being held open, relieving pressure.
Send me an email, I'll help you work through this,
Thank you,
Andrew
tdi2micron@yahoo.ca
2micron is offline   Reply With Quote
Old July 3rd, 2017, 13:01   #7
CoolAirVw
 
CoolAirVw's Avatar
 
Join Date: Nov 2005
Location: Kansas City Missouri
TDI(s): Jetta
Fuel Economy: 40
Default

Quote:
Originally Posted by 2micron View Post
One or more injectors is being held open, relieving pressure.
Send me an email, I'll help you work through this,
Thank you,
Andrew
tdi2micron@yahoo.ca
What if the cylinder got full of fuel? Hydrolock?
__________________
Richard. ASE Certified Master Auto-Technician with L1 Advanced Engine Diagnostic Rating. ATRA Certified in Rebuilding, Diagnosing & Installing Transmissions.

LOOK AT MY YOUTUBE CHANNEL -->
https://www.youtube.com/user/CoolAirVw/
Now offering Malone Tunes!..............http://www.kansascitytdi.com/
CoolAirVw is offline   Reply With Quote
Old July 3rd, 2017, 18:52   #8
IA DPE
Member
 
Join Date: Mar 2011
Location: Iowa USA
Default

Andrew have you developed a 2 Micron system for the 3.0s like you did the 2.0s?

I might be interested...
IA DPE is offline   Reply With Quote
Old July 4th, 2017, 12:21   #9
vtek71
Member
 
vtek71's Avatar
 
Join Date: Apr 2011
Location: Costa Mesa, CA
Default

Guys i fixed it! Unplugged the fuel pressure sensor and it fired up then died. So i removed it and cleaned it with brake clean then reinstalled. Now it runs. Incredible.
Hopefully no one else has this issue thats qualified for the buyback but if you have a hpfp failure don't let the dealer rape you for $15-18k. $700 pump and some heartache and its good now. Thanks for your replies!
__________________
*2001 2 door Golf, 5spd, RC3, EGR Delete, VR6 clutch, straight pipe exh, Bilstein TC's, H&R Sports, HID's, Aristos, .622 5th gear....
vtek71 is offline   Reply With Quote
Old July 5th, 2017, 03:33   #10
mjhandy
Veteran Member
 
mjhandy's Avatar
 
Join Date: Jun 2007
Location: Kitchener, Ontario
Default

Awesome. Hand it back quick and get another one!
__________________
Mark J. Handy
HEX + CAN usb
2009 Touareg TDI
2000 Jetta TDI, 568K km, Bye bye

mjhandy is offline   Reply With Quote
Old July 23rd, 2017, 22:23   #12
willyworm
Member
 
Join Date: Mar 2009
Location: On the road, SC
TDI(s): 2003 Jetta
Default

Out of curiosity what year was your Q7 and how much did they give you for it?
willyworm is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
3.0 HPFP Failure, 2009 Q7 220k unseenthings TDI 101 23 May 20th, 2017 05:37
2010 q7 hpfp warranty? TdiSandiego Audi SUVs (Q7 & Q5) 2 October 28th, 2016 07:40
Audi to buy back 25,000 Older Diesel Q7 Models in U.S.: Der Spiegel VLS_GUY Dieselgate - VW Group Emission Scandal 0 October 23rd, 2016 23:19
2nd hpfp failure at 120k need new injectors! where to buy 06dieselpower VW MKV-A5 Golf/Jettas 6 January 31st, 2015 05:06
Would you buy it again? HPFP failure owners only! dan30thz28 VW MKVI-A6 Golf family including Jetta SportWagen (~ 2010-2014) 0 June 15th, 2012 14:39


All times are GMT -7. The time now is 01:39.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright - TDIClub Online LTD - 2017
Contact Us | Privacy Statement | Forum Rules | Disclaimer
TDIClub Online Ltd (TDIClub.com) is not affiliated with the VWoA or VWAG and is supported by contributions from viewers like you.
1996 - 2017, All Rights Reserved
Page generated in 0.14053 seconds with 13 queries
[Output: 110.22 Kb. compressed to 92.56 Kb. by saving 17.66 Kb. (16.02%)]