Wondering if others have had the same problem with the Pressure Limiting Valve 06D-130-757C failing or acting poorly?
My story...I had the APR Fuel Pump installed back in Dec 07 and my car ran roughly 10 min before it died and left me stranded. See my previous thread: http://www.golfmkv.com/forums/showthread.php?t=34616
Now for the rest of the story….. after 5 weeks in the shop at the dealer; the problem turned out to be a Pressure Limiting Valve 06D-130-757C. The dealer changed nearly every fuel system related part (even the high pressure fuel pump) until they determined the problem was the fuel returning back into the low pressure side. (Oh my stock fuel pump was back on the vehicle and mum on the APR Fuel pump.) Very painful experience.
Background info - I had not noticed any fuel related issues with my car before adding the APR Fuel pump...I just wanted more HP! I was running APR stage 2+ and thought I might have felt a few fuel cuts but nothing significant. My conclusion after studying the 2.0T fuel system and repair manual was that the APR Fuel Pump possibly damaged the pressure limiting valve open after one punch WOT.
These mechanical check valves are designed to open at 1,740psi (120 bar) which is only 10% higher than the max output of the stock fuel pump (1,595psi or 110 bar) and dump the fuel back into the low pressure side. If this valve fails no high pressure can be generated.
Beware...I am not sure if its worth upgrading to a APR Fuel Pump if this valve is not upgraded as well.....just my opinion.
My story...I had the APR Fuel Pump installed back in Dec 07 and my car ran roughly 10 min before it died and left me stranded. See my previous thread: http://www.golfmkv.com/forums/showthread.php?t=34616
Now for the rest of the story….. after 5 weeks in the shop at the dealer; the problem turned out to be a Pressure Limiting Valve 06D-130-757C. The dealer changed nearly every fuel system related part (even the high pressure fuel pump) until they determined the problem was the fuel returning back into the low pressure side. (Oh my stock fuel pump was back on the vehicle and mum on the APR Fuel pump.) Very painful experience.
Background info - I had not noticed any fuel related issues with my car before adding the APR Fuel pump...I just wanted more HP! I was running APR stage 2+ and thought I might have felt a few fuel cuts but nothing significant. My conclusion after studying the 2.0T fuel system and repair manual was that the APR Fuel Pump possibly damaged the pressure limiting valve open after one punch WOT.
These mechanical check valves are designed to open at 1,740psi (120 bar) which is only 10% higher than the max output of the stock fuel pump (1,595psi or 110 bar) and dump the fuel back into the low pressure side. If this valve fails no high pressure can be generated.
Beware...I am not sure if its worth upgrading to a APR Fuel Pump if this valve is not upgraded as well.....just my opinion.