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Old 02-28-2002, 08:38 PM
400E 400E is offline
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Join Date: Jun 2001
Location: Omaha, NE
Posts: 962
Hints for replacing fuel pressure regulator?

I have a new fuel pressure regulator (from PartsShop, of course!) and want to replace my old one to see if this will help an intermittant rough idle problem. The CD doesn't seem to cover this job. My Haynes manual says to depressurize the fuel system before attempting to take out the old regulator by taking out the fuel pump relay and cranking the engine a while.

Is this necessary? Any other little hints or things to watch out for?

'93 400E
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