going into limp mode

2004 FIAT DUCATO
90,000 MILES
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BOSABOSS
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Van runs fine below 2000 RPM but soon as you put a bit of pressure on the accelerator over 2000 revs it cuts out or goes into limp mode. i have had a new fuel rail pressure sensor and a new fuel pressure regulator valve and its still the same, any help would be appreciated. Thanks
Mar 20, 2017 at 6:43 AM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
Hello,

Lets run the computer for codes to see whats come up, here is a guide to get you started.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please let us know what happens.

Best, Ken
Mar 22, 2017 at 5:00 PM
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BOSABOSS
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Had it on a diagnostic and it says fuel rail pressure sensor and the fuel regulator, changed both of these and its still the same unfortunately,and still comes up saying these have gone.
Mar 23, 2017 at 1:56 AM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
It sounds like the fuel pump is going out not supplying the fuel system with enough pressure. Try to take a pressure reading to see if it is low. I don't know what the pressure should be if you find out please post it.

Please let us know what happens.

Best, Ken
Mar 23, 2017 at 8:04 AM
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