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Old 01-29-2011, 02:42 PM   #23
david95
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Re: shuddering regal, rough idle

Quote:
Originally Posted by enslow View Post
If I get a chance I'll look in my FSM, but I'm sure some one else can find it before me. I'll admit, I'm relatively new to the 3800 as I've owned one for 2 years after having a Grand Marquis for 12 years. I could almost identify every wire, tube, and box on that 4.6L motor. I guess after 10 years I'll get to the same point on the 3800!
I think it's the vacuum hose that creates the air pressure needed for the fuel pressure regulator to increase the fuel pressure when the gas pedal is pressed. Which might be the source of my problem. That vacuum hose came off way too easy - I barely bumped it. So maybe it was already loose.

I still don't know the precise name of this part. I'm still searching.
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