Ford F-150 - 1997-2003 :: 2001 - Fuel Pump Does Not Turn On Randomly
Jan 9, 2015
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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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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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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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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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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Having a problem with the fuel pump engaging. Warm or cold same problem. When I turn the ignition on I can hear the fuel pump engage and the car runs fine on start. Other times I turn the ignition on and don't hear the pump engage, thus no start. But repeatedly turning the ignition on an off I get the fuel pump to engage and I have start, will run until I shut it down. been doing this for a couple of weeks now. Is this an ignition thing or fuel pump? No wiring diagram. Replaced all relays, battery good. Never did anything with the fuel system.
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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 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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How do you test the fuel pump regulator, the truck wont start. I tested the schrader valve and it does have pressure but didn't seem like much. (need a gauge) I replaced fuel pump a few years ago so was wondering about the regulator. Is there a test procedure?
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Drove for 25 miles. Park, try to restart to park truck at other place. Truck start but very rough. Did drive for 20 yards and truck stop. Try to restart no way. I think I do not hear fuel pump when I turn key and gas pedal fill completely empty, no any force to move it. Should I assume fuel pump or should check some sensors first? I have P0420 for a few weeks, not source of this problem. Drove truck before with P0420 for years. No other code. Do we have PATS in keys? My truck is f250 99 LD. My pickup have PATS. How to check it?
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New to this site, my problem is on my 2003 4.6L fuel pump not working.My problem is that I am not getting voltage to contacts on pcm and fuel pump relays.
Getting volts to #30 fuse 30amps ok, voltage to pcm diode ok. Voltage on #30 on both relays(pcm & fuel) but I am loosing voltage across coils contacts #85 & #86, these makes hot #30 & #87 to make pump work. Inertia sw ok, Don't know if PCM is bad, ck fuse #2 ok 5 amps.
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My 02 F150 4.6 has 84K miles on it, and started stumbling/hesitating during accellartion about three weeks ago. Before this problem started (about 2,000 miles ago), I installed a new fuel filter and air filter. Since I noticed the problem, I installed new plugs. The problem didn't go away, so today I checked the fuel pressure. At idle the pressure is 32psi with the vacuum line left on the fuel pressure regulator (30-45 is normal as per Chilton's), and 42 with the vacuum line off (40-50 is normal as per Chilton's). I also had someone else rev the engine so I could observe, and found that the fuel pressure went as low as 28 when the engine speed was quickly increased. The standing fuel line pressure is 30 (30 is normal as per Chilton's) Does this sound like a fuel pump problem, or is there something else that I'm missing.
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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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1999 4.6L won't start after sitting a month. Ran fine before, now won't start. Cranks fine. Cannot hear fuel pump turn on when key is turned. Fuel pump fuse is good.
Fuel pump relay clicks a few times when key is turned. Is this normal? I am hoping it is the relay and not the pump. What should I check next? The wires at the pump? What should they read?
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My Santa Fe quit running one day as I was driving. The fuel pump hums when I turn the key to on. The spark plugs look ok. One coil is not getting a spark. We replaced that coil and it still isn't sparking. The timing belt appears to be fine. I bought an OBD II reader, and it gave me the code for the camshaft position sensor. We replaced that today, but there is still no spark. I cleared the code and tried to start the car. There are no codes present so I am assuming I fixed the camshaft sensor issue. Next up on the list is to replace the wiring leading up to the ignition coil. I gave it a quick look over. It appears to be ok, but I might replace it anyway. The outer housing is cracked a little, but the car is 13 years old so I expect that. Before it died there was an awful sound coming from the engine. It sounded like a piston was rubbing/scraping. I am throwing that out there just in case it is related to my electrical issues. I have noticed other weird electrical issues as well. The middle brake light usually works, but sometimes it doesn't work and sometimes only part of it works.
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Instead of a normal humm I get a growling noise when I turn the key to prime the fuel pump.. I am think fuel pump issues.. but no sure if thats what it is??
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I have a 1999 f150. Its having a fuel problem i was driving and my truck just cut out on me. I have diag it as the fuel pump cause when I turn the key, I have no response from my pump.
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I just checked my computer I have a couple codes
P0453 evap emission system pressure sensor/ switch high
P0232 fuel pump secondary circuit high
C1303 right front isolation clamping circuit..
P0305 cylinder 5 misfire.
I changed the fuel pump 2 days ago and the coil on cyl 5.
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I have been chasing down what was a perceived vacuum leak...
My Ex (V10, 4x4, 217K miles) started to have an intermittent rough running/no power situation very randomly. No codes on the scanner, and no real apparent cause or condition to pin it down. I noticed what sounded like a like throttle ping...figured it was a vacuum leak someplace in the spaghetti under the hood.
I began to run down the possibilities. I have recently had the entire suspension replaced and upgraded all 4 corners to Power Stop brakes. Figured it might be something related like the classic lines to the hubs.
Replaced the vacuum lines to the hubs - ran OK for a bit, then rough start/idle/no power.
Replaced the vacuum switch for the hubs - ran OK for a bit, then rough start/idle/no power.
Replaced fuel filter - ran OK for a bit, then rough start/idle/no power.
Ordered a new vacuum reservoir...
While waiting on that, changed all 10 plugs and coils. Not. Cheap. Ran OK for a bit, then rough start/idle/no power.
Replaced IAC - ran OK for a bit, then rough start/idle/no power.
As I was getting ready to install the vacuum res, it just croaked. it would turned over like it wanted to start, but wouldn't catch.
Of course.... So, now it had to be towed and yes, the fuel pump puked and that was that. I've never had one do anything but just quit suddenly before, so lesson learned. Evidently these pump can act up for a bit before they die.
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Have a 95 Bronco with 5.8, I turn the key on and fuel pump doesn`t shut off. Changed fuel pressure regulator still no shut off. Changed relays, no luck. Have 38 pounds pressure with key on, but no start. Checked spark just in case, and have fire. Don't know what to try next.
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04 jetta 1.8t
apr tune 1.6v
neuspeed 4bar fuel pressure regulator
3" turbo back
APR TIP
This is the second time this happened to me. First time was about two weeks ago where i was just driving and the car stalled. Tried to start but it sounded like it just wasn't getting fuel. Brand new battery, terminals are clean) Got it started and it was revving high like a cold start, normal but why after driving for 30 mins? EPC light came on also which was strange along with the CEL, a buddy checked the code and it was for the secondary air injection pump. (I have not had that go off in a while. Code po4011 secondary air injection. Had this issue a while ago with that code when i did a short ram intake. Tuner cleared it so i can pass emissions. ) Now today it died about 2 miles from my house. Same thing but no CEL. EPC light came on and car was revving high, luckily 3 cars behind my buddy was there and he give me a push into the gas station. Once again it wanted to start but i felt like no fuel. waited a few minutes and it started right up again until it almost died in my drive way. Cluster comes on when it dies. ignition is good.
My big question is the stalling part and the EPC light coming on, then the car revving like it is a cold start but not stopping? and i need this car to be working.
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