VW Golf R32 Forum banner

1 - 20 of 32 Posts

·
Registered
Joined
·
138 Posts
Discussion Starter · #1 ·
Having some trouble with my 2004 V6 HPA Turbo. Initially the car broke down and the fuel pump wasn't engaging and the car got towed to the local garage who got the car up back running, but all was not well! The car idled ok but underload the car was barely drivable with misfiring and bogging down as if fuelling or boost was an issue. I've since changed the spark plugs, coil packs, Temperature sensor and fuel filter and the car was running slightly better but still misfiring and bogging down, especially when warm.

I took the car for a 40 mile round trip and after stopping for fuel, she wouldn't start. After 100 attempts and 30 minutes, she sparked back to life all be it slightly laboured. Ive ran diagnostics and there are no fault codes, not all together surprising as various codes had been mapped out by the installer of the Conversion who is no longer on the Christmas card list. Given , i've now changed the obvious items, is there anyone out there with intimate knowledge of the R32 with a HPA turbo conversion that could steer me in the right direction to get this sorted and back to enjoying the car over the summer?

thanks folks for any info / experience you can give. Car has been converted for 3 years and has run without many faults during this time...
 

·
Member
Joined
·
877 Posts
The HPA conversion you have is probably a HGP 460 that HPA licensed from HGP, based on the GT30 turbo?

Gaz Jones has performed loads of Turbo conversions on the 3.2, but he is based in Lincolnshire, not exactly next door to Edinburgh but people visit him from all over the UK to get 3.2 work done, cam chains swapped etc.

http://www.vagautocareservices.co.uk/index.html
 

·
Senior Member
Joined
·
275 Posts
Have you checked you have power at fuel pump as you said it was not engaging.

Or it could be fuel pump relay under dash with 409 on it.
 

·
Registered
Joined
·
495 Posts
The root cause is either going to be fuel, spark or air related. What was the actual issue with the fuel pump and how was it resolved? I just hope the engine wasn't running lean as a result of the fuelling issue...
 

·
Registered
Joined
·
138 Posts
Discussion Starter · #5 ·
The HPA conversion you have is probably a HGP 460 that HPA licensed from HGP, based on the GT30 turbo?

Gaz Jones has performed loads of Turbo conversions on the 3.2, but he is based in Lincolnshire, not exactly next door to Edinburgh but people visit him from all over the UK to get 3.2 work done, cam chains swapped etc.

http://www.vagautocareservices.co.uk/index.html
Cheers, yeah I've spoken to Gaz all be it a while ago prior to my conversion. I should of taken the car to him! The car originally ran HGP Software with the HPA Anniversary kit and was then custom mapped from the original Audi software. Car runs a Borg EFR and not the GT30.
 

·
Registered
Joined
·
138 Posts
Discussion Starter · #6 ·
Have you checked you have power at fuel pump as you said it was not engaging.

Or it could be fuel pump relay under dash with 409 on it.
cheers Rich, i've changed the relay and it's not the problem. Car is running but barely drivable with any sort of throttle. Low revs, the car is running just fine.
 

·
Registered
Joined
·
138 Posts
Discussion Starter · #7 ·
The root cause is either going to be fuel, spark or air related. What was the actual issue with the fuel pump and how was it resolved? I just hope the engine wasn't running lean as a result of the fuelling issue...
You're quite right bout the 3 sources to the problem. The fuel pump had some sort of fault that cut it out and this was solved by apparently pushing the relay in! So by this diagnostics, it is some sort of electrical connection issue. However it doesn't cater for the running problem / misfiring under load. I've changed the relay so now have a perfectly working spare!!!

I've also changed:

6x plugs

6x coil packs

fuel filter

Temperature sensor...

...and it is still misfiring badly and bogging down. I tried running the car with the MAF disconnected and it was still misfiring.
 

·
Registered
Joined
·
251 Posts
measure the fuel pressure for a start. I'd check the compression too.

Then look at the live data through VCDS and look for anything not right.

Error codes only come up when something is out of range or open circuit etc. lots of parts can be faulty without a code comimg up

There's so many things it could be, but without a planned attack, you'll be replacing all sorts of parts without result.
 

·
Registered
Joined
·
425 Posts
With the HPA kit you must be running a second fuel pump. Verify that both fuel pumps is working and then do a compression test. If all is ok, take the car for a drive with VCDS and look in measuring blocks group 1+20+21. This will show you fuel trims in group 1 and engine knock in 20+21
 

·
Registered
Joined
·
138 Posts
Discussion Starter · #10 ·
Cheers lads - running a dw65v and no external pump. I'm almost certain its causing the trouble.

I tried the obvious fixes above / well, atleast I know where i am with these items which is no bad thing
 

·
Registered
Joined
·
495 Posts
Cheers lads - running a dw65v and no external pump. I'm almost certain its causing the trouble.

I tried the obvious fixes above / well, atleast I know where i am with these items which is no bad thing
Change the pump. I'm forever seeing fuel rail pressure issues with those pumps now that enough people have run them for a while. I'm glad I decided against one.
 

·
Registered
Joined
·
138 Posts
Change the pump. I'm forever seeing fuel rail pressure issues with those pumps now that enough people have run them for a while. I'm glad I decided against one.
I've not heard of any failing - is it a different story here with the r32's with turbo's? Like I said, I've never heard of one failing - talk to me guys, mines has only been fitted for 4 months!
 

·
Registered
Joined
·
495 Posts
Change the pump. I'm forever seeing fuel rail pressure issues with those pumps now that enough people have run them for a while. I'm glad I decided against one.

I've not heard of any failing - is it a different story here with the r32's with turbo's? Like I said, I've never heard of one failing - talk to me guys, mines has only been fitted for 4 months!
I'm sure Nash from Lebanon is on here, he had issues with them. There's someone else on here who has just had issues as well. A few over on vortex have had issues too. On the flip side there are others who run them without issue. Mixed bag reliability isn't a good thing in any case.
 

·
Registered
Joined
·
138 Posts
Discussion Starter · #14 ·
When I bought it, I had no reason to suspect it was faulty however, it was a bit rattly. In comparison, the OEM pump didn't click at all when shook softly... will send it back and update. cheers
 

·
Eats Kitty Litter
Joined
·
7,311 Posts
Only time i have known people to have a problem with the dw65v is if not installed properly.
 

·
Registered
Joined
·
108 Posts
What boost pressure are you running? The injectors inject into the intake manifold which is obviously at boost pressure. The higher the pressure, the beefier the fuel pump needs to be. I have read reports of the DW struggling against 15-20 psi. i.e. leaning out. You can see this in VCDS logs.

Though, this is getting ahead of things. Sounds like its running rough under no boost too.
 

·
Registered
Joined
·
1,039 Posts
My guess would be the fuel pump. Get a fuel pressure gauge installed
 
  • Like
Reactions: Cuprabhoy
1 - 20 of 32 Posts
Top