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#1
10-20-2017, 12:21 PM
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Vrrrrrt noise
Occasionally when I accelerate I hear a slight quick "vrrrt" kind of noise. I thought it might be some belt wear so I did look under the hood for any obvious signs. Nothing looked unusual to me. I don't notice the noise at all on the highway, just driving around on normal roads.
Any thoughts before I start trying to dig deeper on this noise?
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2003 Mercury Marauder 300B (Daily Driver) 1988 LTD Crown Victoria S 
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#2
10-20-2017, 04:33 PM
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Do you hear the sound between gear changes, or immediately after a shift?
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#3
10-20-2017, 04:38 PM
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Quote:
Was this after leaving a Taco Bell? Sorry...I couldn't resist....my bad....carry on.
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2017 Ford Fusion Sport DFI. Twin Turbo V6 6 speed Auto 1985 Mustang GT 5.0 Hatchback 4bbl 5 speed manual 1984 Mustang GT 2.3 Turbo Convertible FI. 5 speed manual 1966 427 Cobra (ERA) 468 all Aluminum FE 2x4bbl 5 speed manual 1999 Ranger 3.sl0w DD/Beater SOLD : 2003 Mercury Marauder FI. 4 speed Auto w/Crower Cams & Springs, +1mm SS valves, mild port job on the cylinder heads. Extrude honed intake w/PHP spacer. Kooks Headers w/2.5" High Flow Cats & X-Pipe, Magnaflow mufflers, OEM tailpipes w/Megs Tips B&M Trans cooler w/fan, Level 10 Shift Kit, Art Carr Hughes Deep Sump Trans Pan, SVO Rearend Girdle, Redline Gear lube; OEM 3.55s 'Real Gauges' + matching Trans Temp, Oil Temp, Water Temp, Fuel Pressure, Vacuum/Boost Gauge Built: 10/15/02 Bought: 12/16/02 Sold: 10/15/18 Last edited by Joe Walsh; 10-22-2017 at 08:32 AM.
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#4
10-20-2017, 04:47 PM
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Quote:
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The Blackbird Trilogy #61 Driveway Queen The Spruce Goose 2004 Grand Marquis LS Limited Edition Daily Driver
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#5
10-20-2017, 08:42 PM
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Belts look good but can be worn out, change it. Then look into pulley's, start with idler and then tensioner. Maybe a squirt of a light machine oil in the bearings.
Good luck,
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#6
10-20-2017, 10:14 PM
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Quote:
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#7
10-21-2017, 07:14 AM
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__________________
Born 03/04 Adopted on 01/03/05 2084 of 3213 & 691 of 983____Moonroof 185 of 335 of 1213 Now Procharger boosted #04 
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#8
10-21-2017, 01:24 PM
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#9
10-21-2017, 02:16 PM
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Back to the OP, Could it be coming from the A/C system?
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#10
10-21-2017, 05:06 PM
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You guys are hilarious. lol
I didn't notice the noise yesterday but I was mostly on the highway. It was happening before pretty regularly just driving around town. I was trying to record it and of course that was when it wasn't making the noise anymore. lol I haven't been running the A/C for awhile as the season is getting cooler here. Could it still make a noise?
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2003 Mercury Marauder 300B (Daily Driver) 1988 LTD Crown Victoria S
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#11
11-06-2017, 10:01 AM
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Quote:
What are you saying that might mean?
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2003 Mercury Marauder 300B (Daily Driver) 1988 LTD Crown Victoria S
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#12
11-07-2017, 10:16 AM
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I was digging to see if it was related to the alternator clutch pulley. But that only makes noise after a shift, never before.
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#13
09-17-2018, 01:38 PM
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I'm really thinking it might have something to do with the exhaust. Maybe a loose heat shield or something. When I get the intermittent no crank no start looked at, I'll have the stealership look for this issue as well.
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2003 Mercury Marauder 300B (Daily Driver) 1988 LTD Crown Victoria S
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#14
10-29-2018, 08:31 AM
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Took the Marauder to the stealership and they said the Vrrt noise was coming from the driver's side catalytic converter and flow master. They wanted to keep it to dig into it. As it was end of day and my wife didn't want me to leave the car, left it at that for now.
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2003 Mercury Marauder 300B (Daily Driver) 1988 LTD Crown Victoria S
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#15
10-29-2018, 08:47 AM
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Ahhhhhh, that could be the metal shroud around the cat. I had to reweld mine a few years back because of that annoying noise when it vibrated. If it's not, it could also be some loose honeycomb that's broke loose inside the cat itself
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