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  #1  
Old 11-18-2012, 09:07 PM
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Join Date: Sep 2003
Location: Ft Lauderdale FL
Posts: 204
Fuel pressure regulator

How do I know when the fuel pressure regulator has gone bad? The symtoms are it will not idle without a really bad shake and it runs in limp mode and gives me a P0087 code. And it dies if you give it to much fuel/throttle. The fuel pump works because I have a fuel pressure gauge mounted after the fuel filter (new) going into the engine.

If it is bad do I have to replace the whole rail? How much is that part I bet it is very expensive? I have 172,000 miles on this car. I am taking it in to my trusted mechanic on Wed. today is Sunday.

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Old 11-18-2012, 09:12 PM
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Quote:
Originally Posted by grease lightnig View Post
How do I know when the fuel pressure regulator has gone bad?
The fuel pressure will be too high or too low.
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  #3  
Old 11-18-2012, 09:42 PM
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Join Date: Sep 2003
Location: Ft Lauderdale FL
Posts: 204
FPR

Did I mention that is was a 2005 E320 CDI with a common rail. Is there a way to check the pressure after the rail?

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