Forum Discussion
hawkeye-08
Mar 07, 2012Nomad
I think Delphi has the answer to this Bosch pump problem. I had read that they patented the fix to the CP4 pumps and they also came out with a new pump that incorporated their patents. Bosch is too stubborn to pay Delphi the license fees for the better pump...
New VW with Delphi HPFS pump
... and of course the poster over on FTE that posted this..
http://www-odi.nhtsa.dot.gov/acms/do...003-45604P.pdf
The Bosch CP 4.X series of pumps are a family of pumps, with the same inherent design flaw, such that a law firm in Texas has a class action lawsuit against VW/ Bosch for it, you can find it at the end of the NHSTA pdf above on pages 316 to 333.
New VW with Delphi HPFS pump
... and of course the poster over on FTE that posted this..
http://www-odi.nhtsa.dot.gov/acms/do...003-45604P.pdf
The Bosch CP 4.X series of pumps are a family of pumps, with the same inherent design flaw, such that a law firm in Texas has a class action lawsuit against VW/ Bosch for it, you can find it at the end of the NHSTA pdf above on pages 316 to 333.
About Around The Campfire
44 PostsLatest Activity: Mar 27, 2026