Ford F-150 - 1997-2003 :: 2001 4.6L Keeps Turning Over But Not Starting / Fuel Pump Makes Noticeable Buzzing Sound
Apr 6, 2012
My 2001 4.6L F-150 has been sitting on the driveway, used once every 2 weeks or so for the last 3 yrs. I came to start it a few days ago and it kept turning over but not starting. The key security chip is working, battery is charged, all plugs are firing, fuel pump fuse and relay check good. When I turn the key to ON, sometimes I hear the fuel pump priming, other times it doesn't. The times it does prime, the truck fires right up.
The times it doesn't prime, engine won't start. When the pump does prime, and while the engine is running, the pump makes a noticeable buzzing sound, much louder than normal. When the pump primes. fuel pressure measures at 42psi in the ON position, 36psi with engine running, and 46psi with engine running and vacuum hose removed. I believe all these are within specs.
My question is this: Is it safe to assume that the pump is going bad and will eventually fail completely? My second question is (and I know this can be debated til the end of time) should I get the Motorcraft or aftermarket? I have Airtex, Spectra, Carter, and Delphi available locally.
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Ok I have recently bought a 1998 Ford F-150 V6 4.2L 2WD and when the guy sold it to me the check engine light was on and he told me that randomly when you turn the key to the on position you will not hear the fuel pump buzzing sound and he knew it wouldn't start, he said you would have to turn the key from the on and off position many times until you hear this sound and then the truck will start and run fine.
First off I got the codes read and there were three of them P0171, P0174, and P1537 some things to note are that the drivers air bag looks like it had deployed, the cover is loose and when I pulled it back the air bag looks duct taped up inside there that would cause the air bag light to continuously flash while driving. I noticed the battery leads were corroded so I replaced the battery and put new battery clamps on both wires, after that the problem did not happen for a week and I though it was over but it happened again.
Next is that the truck has the PATS system and it did not come with a remote which I have also read that the PATS system can cause the fuel pump not to turn on but not sure if this would cause it to not start randomly because sometimes it starts right up. When I started to look at the simple things to fix I noticed it did not have an air filter in the housing. so I thought the MAF sensor could be dirty so I cleaned it with the special cleaner, I put sea foam into the intake via a vacuum hose and also have put a fuel system cleaner in a full tank and have driven most of the gas out. After putting in an air filter, cleaning the MAF sensor, and sea foaming the intake, it seems to run a bit better but I am still having the random fuel pump issue.
I have checked the fuses and the and the fuel pump and ECM relays both are fine. Today I put new exhaust on it because it had some bad exhaust leaks and the truck did not start again, so the guy trying to put my exhaust on, hit the fuel tank with a hammer and it didn't work then hit it again and it finally worked. Im not sure if the hitting it did it or if it just randomly turned on like always from turning the key on and off. The new exhaust has made a huge difference in driving it feels and sounds much better.
Also to note is that when I am stopped at stop lights it will idle at about 1500 and then it drops down to 500 and back up and back down again and it does this at most stop lights, and it is not an abrupt drop it just slowly idles down and back up again. Again once the truck is started it runs perfectly fine with no issues, and there are no specific times when it has the problem it seems to be randomly. I know that many people will tell me to change the fuel pump out and I am already prepared for this but if there is any easy things I haven't thought of yet...
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I have a 1998 Ford F150 with 4.2.. Started off a intermittent problem of not starting acct no fuel. Now will not start at all. Checked all fuses and relays.. Am not getting voltage at fuel pump. Changed ECM thinking that was the problem.. Have checked all multi wire connectors for corrosion and tightness. Am at a lost what to try next.
Also, not sure if its related or not. The turn signals and hazard flashers do not work. When I turn on the hazard flashers, nothing happens. If I leave the flashers switch on, the turn signal work. Checked all fuses and relays and they appear good.
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The past week or 2 I have had an intermittent starting problem. Engine is turning over but wont start, but after i wait a second it will start up. I listened to see if the fuel pump was running and heard the whine. I checked the battery and the starter voltage and it was all good. i primed the fuel pump a couple of times and it started up on the first crank of the ignition. The truck runs great when driving and idling, no misses or loss of power that i have felt or heard yet. I am thinking it is either the fuel pump is starting to go or maybe the fuel filter is getting a little clogged up. Like i said up above this is an intermittent problem and that is why I am confused. Its a 2001 F150 4.6 4X4 ....
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I've got a strange problem on my '01 F-150 4.6L 4X4. When the outside temperature gets below 40-45 degrees the fuel pump won't always run when trying to start the truck. You can cycle the key switch on/off 8-10 times and the fuel pump will run. The engine will then start and run fine. You probably have to use this procedure 80% of the time. It started this last winter. I replaced the fuel pump relay in the power distribution box under the hood but that did not work. When the outside temp warms up the problem goes away.
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My brothers 2001 is having an issue with the fuel pump. It has a random no fuel pump basically the fuel pump does not come in, he turns the ignition off then back on and you can then hear the fuel pump turn on and the truck starts and runs normally. I'm not looking forward to dropping the tank to replace the sending unit so I was thinking maybe the relay is the issue? I'd eater do that than a sending unit job...
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2001 F 150 5.4 V8 4WD. I have a weird creaking sound coming from the front end, sounds like the passenger side, whenever I turn right at any speed. What it is?
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I have a 2001 Ford F-250 with the gas v-10. Yesterday it started just fine as always. Today I get into it and it starts to turn over just fine then starts to make a grinding sound and the truck won't start. I have had a fuel issue in the mornings with once it started you had to barely press the gass to keep it running. But never makes a funny sound and always runs fine. This only last for a couple of min and then it runs fine for the rest of the day. The grinding is not the starter. I took it off and had it checked and it was fine.
The truck had been using oil. When I checked the oil level it was low but it was still on the stick. "I know a motor needs oil to run smooth but it's my dads truck and well let's just say he is not the best on maintenance". Also I smelled the oil and it does have a gas smell to it. So it definitely does have some gas in the oil. I tried to light the dipstick with a lighter and it wouldn't light. So not sure how much gas is in it but that's what I did.
So the question is, would something just in mid crank go bad and then not let the motor crank. Truck made no weird noises before this so I find it hard to believe the barrings just went out in mid crank and now it is shot.
Also I just checked compression on front cylinders.
Driver side read 75lbs
passenger side read 100lbs
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I have a 2003 Hyundai Accent with 166K on it. A couple of weeks ago I drove it and for an hour and parked, then after several hours I tried to start it and it wouldn't start. I had it looked at and found out that the fuel pump was not buzzing. I replaced it, it started and I drove it for a couple days then it died and didn't start again. It cranked but wouldn't start. To get it to start again, I had to spray starter fluid and then was able to drive it home. A couple of days later, while I was idling at a traffic light, it died. The engine cranked but it wouldn't start. I used starter fluid again and got it home. Once I use starter fluid it runs fine, like nothing is wrong with it. There is no fault code present. I replaced the fuel relay, fuel pressure regulator, ECU, fuel filter and spark plugs but I still have the same issue. What else do I need to replace? The car will start sometimes and sometimes it won't. Sometimes it will start fine without starter fluid and then other times when it randomly shuts off, I have to use it. I was going to replace the crank positioning sensor but since the car starts with starter fluid I think it may have something to do with the fuel.
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Grinding feeling, and noise from rear of 02 explorer xlt. only noticed when starting out from a full stop and turning. It feels like something is grabbing like the rear brakes. I purchased this suv of a local dealer lot, because it was so clean and on a short test run seamed fine.
The day after I picked it up I took it for a shakedown cruise to see if I noticed any problems. After going up a few forward grades I noticed a disturbing rattling noise coming from mid under carriage, and got very worried. I immediately took it to a local well revered mechanic. They eventually had it for 4 days in order to diagnose it. After the dealer had done the inspection on the car and passed it, that all rotors and pads needed to be replaced, left front wheel was locked up, inspection sticker month was never punched, both front tires were bad and either the flex plate or tork converter or both needed to be replaced. I took it back to the dealer with the report and he agreed to fix it with me paying for parts. He did and the rattle was gone !
Yet now I have noticed the problem mentioned at the beginning of this piece, plus the rear wiper does not work. I think I got taken for a ride, which may become a longer ride than I thought. All I want is a reliable car. what could that rear noise be ???
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After disassembling what felt like the whole front end of the truck, I finally gain access to the danged thing. Mine has been acting up intermittently for about year and half I guess. When flipping to switch to signal turning, it started making a buzzing sound. At first it was doing it most of the time. Then it cleared up and started working right for several months, then act up, the act right. Well, now it makes the buzzing noise more often than not so i decided to address it. I went to Oreilly, they didn't have one, but told me the part number.
I went across the street to Autozone, that had one on the shelf that was same part number as Oreilly. I put it in and when flipping the switch, the relay does it tick tock sounds like its working, except for there is no indication on the dash cluster that its working, nor are the actual lights working. I swap back to original and buzzing, put in new one and tick tock but no lights. Whats the deal? Is this one of those things that you have to go back to Ford? Or maybe i got a bum relay from parts house and should exchange for another to see if it works?
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I have a 2004 MY05 Jap built AWD RX330 that won't start. It is almost 12 yrs old & has 115k miles on it. This is the very 1st problem I've had with it.
Some quick checks indicate that it may be power supply to fuel pump or fuel pump itself. No sounds from it when turning ignition on.
Any wiring diagram for the 5 pin plug for the fuel pump? I'd like to put a meter on it or connect 12V to the pump directly before I remove it.
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My 2001 Oldsmobile Alero only starts about 50% of the time and has also turned off twice when I was driving, once in a parking lot and once when I was stopped at an intersection. It cranks and the radio and lights work. The fuel pump was replaced two years ago and sometimes you can hear the pump turn on and sometimes you can't. My husband replaced the fuel pressure regulator and has switched out the fuel pump relay but it hasn't fixed the problem. Based on this, can you tell whether the fuel pump might need to be replaced again or whether it could be something else connected to the fuel pump, or something else entirely? The fuel pump is under warranty at the dealership that replaced it, but unless the fuel pump is bad then I don't want to go back to this dealership and would rather go to different repair shop.
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I have a 01 GrandAM 3.4. I have a reoccurring problem with this car. The car will randomly not start, and die while driving. Some days I can drive the car with no problems, and some days it will only have starting problems. These problems are very random. When the car doesn't start it will crank and turn over however the fuel pump will not kick in. You can turn the key on and off several times, and it will fire up. This DOES NOT seem to be a problem with the passlock theft system. The security light has never came on, and you do not have to wait any amount of time for the car to start, you only have to flip the key back and forth several times. The car after running will occasionally die, after the car dies it will usually start back up on the first try. I am very puzzled by this problem not sure if it is the ignition switch, fuel pump, or something in between.
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I have a slightly strange problem with my Ford F-150 I know it's going down the road a couple days ago that and my air conditioning console was set to panel Suddenly the air conditioning pump will kick on. first question is there an easy way of fixing this if not is there a way that I could splice into the air conditioning console wires and possibly cut power to the pump with an addition of a switch. I have a 1997 Ford F150...
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I have a 2002 F150. I have an intermittent issue with truck not starting. It turns over fine but will not start. Also, when having this issue, there is also no activity with the cluster when turning the key on (other than lights lighting up); the gauges will not move as they would normally when turning key on. I have checked every fuse inside / out. I have checked the fusible link at the battery as well as any other connections I could locate around the solenoid as well as disconnecting the ECM / computer and re-plugging it back up. Typically, after letting the truck sit for a day or so, it will start back up until next time.
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this is regarding a 2001 taurus sedan 3.0 liter 116,000 miles.She developed an intermittent starting problem. No particular time or situation to when it would do it.Had it diagnosed as a crankshaft sensor which was replaced. fixed the start issue but then had a noticable missfire or jerkiness to the car while accellerating. I was told it could be fuel filter so replaced that.After getting it back it still had a very noticeable jerking to the drive. Was next told it might need injector cleaning. The exhaust sensor light would come on at times. So it was suggested to change an injector in cylinder 1 as that was the problem cylinder. Not sure if that has fixed the problem as I have not yet got the car back as there was a problem reinstalling the tank that required parts from Ford to fix.If I get it back and it still misses what else could it be? I was told maybe a valve for that cylinder, does that say the end is near for this vehicle?
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I have a 97 F150, 2wd, 4.6, auto bought for a great price agout 3 months ago.... I installed a cold air intake (air raid) and a throttle body spacer with the swirling cuts.
Since the cold air intake add, the truck occasionally makes a load "roaring" sound from the intake system. At same time rpms increase 500-1000 rpms...
it doesn't do it all the time, mostly at low throttle, and a quick jab on the accelerator usually stops it. sometimes such as when parking, holding the brake and applying a bit of throttle with load from the brake will also stop it.
Guys at local garage seem to think it has something to do with lower outside temps, (denser) and addition of cold air intake. it made the noise before the throttle body spacer.
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I've got a 1997 4x4 xlt with a recently rebuilt engine less than 2000 miles on it I just replaced the fuel filter fuel pump and the relay and what's wrong some times the fuel pump will turn on sometimes it won't don't know what to do now. It turns over just not getting fuel I'm know the pump isn't getting power since I can't hear it kick on...
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I have a 2003 Camry LE with 1MZ engine and U151 5 speed auto trans. 138,000 miles The problem is that the trans makes a very noticeable downshift clunk when stopping.
With light driving you can feel what seems to be a 2-1 downshift just before stopping. With aggressive driving and rapid stop the clunk is felt either when stopping or actually after the wheels stop turning depending on speed and hard braking. If you stop aggressively it actually feels like someone hit you from behind. It literally shakes the car.
TRANS FLUID is full and clean. There is no smell or burnt appearance. The trans tests good in forward and reverse stall tests. Neutral to drive/reverse engagement is also quick and firm.
Here is the fun part. The condition does not exist when cold. After the engine and trans warms up it starts happening. Also, after presenting the condition with a hot trans, I can shift it out of drive and into 3rd and have no problem at all no matter how I drive. To make things more interesting, I can erase the trans learned values with a scan tool and the trans shifts normally for a couple of days before the condition returns.
We are concerned that there may be damage done if this condition continues.
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I have a 2000 F150 with @175K miles. Replaced the clutch about a year ago, replaced the front calipers a few weeks ago, due to the right front locking up on my way home from work. Since then, when I try to start, it blows the fuel pump fuse. (#10)...
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