How to check for a faulty FPR (Fuel Pressure Regulator) and replace it - Page 6
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Cadillac Tech Tips - How to fix it Discussion, How to check for a faulty FPR (Fuel Pressure Regulator) and replace it in Item Specific Cadillac Discussion; I just thought I would chime in and note that my 99 Deville had a faulty FPR, but it was ...
  1. #76
    arctic_man's Avatar
    arctic_man is offline Cadillac Owners Fanatic
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    Re: How to check for a faulty FPR (Fuel Pressure Regulator) and replace it

    I just thought I would chime in and note that my 99 Deville had a faulty FPR, but it was not leaking fuel when I did the vacuum test. I did have all the symptoms: Surging when idling - seemed like the car would drive itself. Poor start when warm, and a couple others I cannot remember. Put up with these issues for 2 years, as it was on and off at first, and cleaning the TB seemed to help, but eventually I spent a few days of research and thought I would give it a shot.

    Replaced the FPR and it has never been better.

    my .02 cents.

  2. #77
    Bogdan's Avatar
    Bogdan is offline Cadillac Owners Member
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    Re: How to check for a faulty FPR and replace it

    What happened with all the pictures?

  3. #78
    rayjuswa is offline Cadillac Owners Fanatic
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    Re: How to check for a faulty FPR (Fuel Pressure Regulator) and replace it

    What do I have to do to see the photos?

  4. #79
    Submariner409's Avatar
    Submariner409 is offline If it won't run, install a sound system
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    Re: How to check for a faulty FPR (Fuel Pressure Regulator) and replace it

    Many members go back and purge old pictures from the forums - Look in the proper engine forum or the specific vehicle model forums.

    If you reduce the file size and upload pictures from an online service they should remain forever; CF has a 20 mb limit on attachment filesize, thus the need to occasionally make more room .......

    For you, this might work - http://lmgtfy.com/?q=cadillac+forums...+regulator&l=1

  5. #80
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    Re: How to check for a faulty FPR (Fuel Pressure Regulator) and replace it

    Picture reattached.

  6. #81
    Ranger's Avatar
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    Re: How to check for a faulty FPR (Fuel Pressure Regulator) and replace it

    DO NOT touch the line with the yellow arrow. See you other thread. http://www.cadillacforums.com/forums...l#post12186689

  7. #82
    closer58 is offline Cadillac Owners Member
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    Re: How to check for a faulty FPR (Fuel Pressure Regulator) and replace it

    Just wanted to pass information on Fuel Pressure Problems on 96 Cadillac Seville sts with 4.6L Northstar. The car was extreme hard to start, and idle was jumping from 600rpm to 1000 rpm steadily, and I would here a loud pop coming from underneath the car when it was hot. On top of this, it was always die out when I made a left turn. I would have to put it in neutral and it would eventually start. Pressure gauge showed 42 psi coming form fuel pump. When I disconnected hose from Fuel pressure regulator, fuel came out. With the hose off, I started car and the fuel pressure regulator was pumping out fuel. I replaced fuel pressure regulator and all symptoms were gone and car is working as advertised. I changed the fuel filter since I was messing with it anyway. Also, on this model, the fuel pump in in the gas tank and their is no access from the trunk or under back seat. Hope this helps.

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