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2004 to 2008 F-150 and Mark-LT 4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs. |
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Mark_123 Fuel pump squeal.... Sun, December 14th, 2008, 09:23 PM
Mark_123 So the Fuel Rail Pressure... Mon, December 15th, 2008, 11:40 PM
Jackpine Sounds at least like it's... Tue, December 16th, 2008, 10:43 AM
Power Hungry Fuel pressure should be a... Tue, December 16th, 2008, 05:03 PM
Mark_123 Thanks...I was wondering if... Tue, December 16th, 2008, 06:56 PM
04FX4 I asked the same question.... Thu, February 12th, 2009, 12:45 AM
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#1
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Fuel pump squeal....
OK, so I've never really had to turn my truck on and off and on without starting before getting my Gryphon. This may have been happening since I bought the truck, so I just wanted some opinions. When I turn my key to "on" without starting, I hear the fuel pump power up normally. When the pump stops (after just a second or two), it makes a squeal like sound as it stops. Is this normal??? Are there any particular readings I should monitor in my Gryphon (Fuel Rail Pressure) to be sure the pump is OK? Like I said, this may have been here since day 1, I just normally didn't turn my key to "on" and wait to listen for it. Thanks for any opinion.
Mark |
#2
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So the Fuel Rail Pressure stays at or around 40 during all throttle positions. I guess that is OK?
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#3
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Quote:
You might want to ask this question on the f150 Engine Forum. There's probably more people with better advice there than you'll find on this new, "specialized" forum. - Jack
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2024 F150 Platinum SCrew 3.5L PowerBoost FX4, Peragon Tonneau Cover, LineX Bed, 35% Window Tint on All Sides and Rear, Full Nose Paint Protection Film, Husky Mud Guards, Lasfit Floor Liners, VIOFO Dash Cam |
#4
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Fuel pressure should be a constant 40 PSI on a naturally aspirated vehicle.
As for noise from the fuel pump, if there's any sound coming from the pump that is loud enough for you to be concerned, then you should probably be concerned. I know my pump is audible with the engine off, but only slightly. I can't hear it with the engine running. Also. a quick trip to the local garage or (Heaven forbid) the Ford dealer to get an opinion wouldn't hurt. They would be able to better advice if the sound is a signal of impending failure. Good luck.
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Bill Cohron - The Mad Doctor Power Hungry Performance - The ORIGINAL in Ford performance tuning... Since 1997! (678) 890-1110 www.gopowerhungry.com - Home of the Hydra Chip, Minotaur Tuning Software, and the new Orion Reflash System for Navistar! Bring back Windows™ XP and 7. Windows™ Vista and Windows™ 8 is a pain in my a$$! Windows™ 10 is only slightly less annoying! Windows™ 11 is garbage! Much to my surprise, I'm actually quite enjoying Linux! Last edited by Acidanthris; Thu, February 12th, 2009 at 12:53 AM. Reason: Fixed a typo |
#5
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Thanks...I was wondering if 40 was standard/OK. Guess I'll just keep an eye on it for now.
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#6
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I asked the same question. What I did was went to my friends exact same truck and listened to his, and it has the same sound. You will ony hear it when you open the door and listen for it when just turning the key to " on " postion. It is just the sound of the fuel pump primimg up.
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