Ok so I have a 2001 f150 4.6l 4x4 I purchase it recently and have been having some issues it has a huge power loss on take off and even while driving I have changed plugs coils tested almost every sensor and am at a loss at this point. No check engine light on or codes...
View 8 RepliesI have a 2001 5.4 4x4 supercrew with 300,000 miles.. This truck is my baby. Recently when I start it up and after putting it in gear and begin taking off my engine is loud as if I am revving the engine without any indication in the rpms. I want to say it starts out on the trip a tad sluggish. Is there anything I can do to eliminate?
View 1 Repliesi have a 1997 150 4.6l with 166xxx miles. when ever you go to take off there will be no power and then all off the sudden it will shoot up too 4000rpm and then you back off it will be fine. Until you stop and go again. Also when ever you come up to a stop it drops down to 500rpm. What might be going on?
View 14 Replies2001, 7.3 sometimes surges slightly on takeoff ??
View 1 RepliesSo loss power on take off and then stopped at store quick shut it down. Came out of store ten minutes later no start just turns over and over. I replaced IPR last year the one on passenger side near frame if that's correct and perhaps this is the ICP near back of engine?
View 14 RepliesI have a 97 F150XL 4x4 a few days ago i was driving and i started to lose power i had to take it out of overdrive just to maintain 60mph by the end of the day it took a good 45 seconds to a full minute to get up to 10 mph. I have been told it is the catalytic converter, anything that would cause this it has a lope when stopped at a light but is fine when in park it acts like its flooding when I take off from a stop but the faster I go after taking off the flooding feel goes away and just seems like a lack of power. That morning i put on a EGR vacuum solenoid and an o2 sensor...
View 14 RepliesYesterday had my truck 1999 ford f150 v8 4x4 it was just sitting there idling fine then it all of sudden sounded like it was about to stall then began idling fine again. It has some hesitation on take off and when going about 40 mph
View 4 RepliesDad has a 01 one ton with the 7.3 and isn't real tech savvy so I'm posting for him. He is the original owner and has been complaining recently about the lack of power. Particularly the upper end. He is having to downshift way more often and where he used to not have to. And we've both noticed a very noticeable shake at idle. Not a vibration but a true shake. He changes the oil every 5000 on the dot and I've gone and changed the air and fuel filter and ran hose and see foam and royal purple injector cleaner through it with no results. Truck is all stock with 225000 on it.
View 7 RepliesSo I have an issue with my 03 f150, Basically It clunks in various scenarios such as Accelerating also occurs take off and general breaking/slowing down but not really when stopping. December when it was cold and I was decelerating (not on the break just coasting) it feels like i was driving on the shoulder.
It does it much more in cold weather. Just had the truck out getting a little rough with it for 5 or so hours today and 0 issues with it.
I was thinking it was a slip yoke issue that I hear allot of trucks have the issue but I was at the dealership today and both guys and a mechanic sitting there were like "never had that issue on an 03 f150, might be your back end." They also stated the clunking would always occur and be more prominent when breaking which its not.
I am certain its not the transmission its not occurring with any shift point. Kind of hard to do it if its hard to reproduce in the heat.
I drive a new to me 2005 F350, he has a 2001 F350. While we were talking he said he didn't think his pickup had the power it should have. He pulls a 5th wheel camper that weighs around 8000 pounds fully loaded. He said it takes a couple of miles to get to 55 mph, and it is hard to hold the speed. It doesn't have the power it did when he first got it last year. He was told that a diesel is slow getting started. He rode with me in mine, when I dropped it about half throttle to pass a slow car he said he could tell mine had way more power.
His check engine light is not on, it starts good both when hot and when cold. It runs smooth, no miss as far as I can tell listening to it. What are some common issues that could cause this? He did just change the oil and fuel filters, not sure about the air filter. He said the power loss came before he serviced the engine, and did not improve after the fuel filter change. Where to start? He was also told to check the filter inside of his fuel tank, so he is getting ready to drop his tank.
I have a 2001 F350 7.3 the truck will at random times loose power and almost shut down. A while back I had an issue with the uvch plugs and changed that out. Truck ran fine till I got some dirty fuel from a diesel tank at my friends farm. I did the hutch mod cleaned the tank and now have a frame mounted screw on filter before the pump. I cleaned the fuel bowl and changed the filter. Fuel pressure stays at 59psi and drops to 56psi wot. The truck is tuned with an edge programmer. After these mods the truck ran awesome for over 2000 miles. Now it has the above stated problem. I have fuel and hpop guages along with egt and boost. During the problem egts will increase rapidly and it seems like it is starving for fuel.
Hpop gauge reads 3300psi or above during wot and shows good pressure during these mishaps. I have auto Enginuity and I get a different reading at wot of only 2600 psi. The hpop gauge is tapped into the icp sensor per instructions and has been installed this way for a while with no issues. The tune has been on the truck for over 40000 miles. The only thing that I can come up with is it will occasionally throw a p1211 under wot or pulling my Gooseneck Dump Trailer when loaded. However it acts up sometimes and doesn't throw the code. Sometimes you can shut it off and start it back up and it's fine other times it will last for the whole day. My only guess is low pressure from the hpop but I don't reflect this from my gauge only on AE at wot. Wouldn't a bad pump act up all the time? Am I correct to think it is just the ipr?
Ive got a 2001 f-150, 5.4L, 121k miles. I've replaced the fuel filter, removed and cleaned all injectors, cleaned MAF, changed 2 faulty coil packs, and installed all new plugs.
No codes thrown, truck runs smooth. Problem is intermittent. It will act as though it's got no power, usually won't happen till it's warm. I can drive it for 2 hours, runs strong. Sometimes when I pull onto a highway and get on the throttle a bit, it starts to hesitate, rpm's go to about 3k and it hesitates, but does not miss. acts like trans is slipping but I'm positive it's not.
So when it starts to do this, it's constant. I can continue to drive and it's runs terrible, does ok if you barely use any throttle. But.... I can be driving 40-50mph while it's having this problem, toss it in neutral, turn it off and restart, and all the power is back, great acceleration, as if nothing ever happened.
My 99 F150 4x4, 5.4 triton all of a sudden got very loud and has a loss of power. To me, it sounds like a cylinder is straight open to the atmosphere. I at first thought a spark plug blew out or an injector somehow came dislodged but I checked and everything seems ok. It's coming from the passenger side somewhere but is so loud under the hood I can't tell exactly where.
I took the valve cover off to see if a valve is stuck open or something, but I don't really know what I'm looking at as far as internal engine goes. I turned the crank by hand with a ratchet and the valves seem to follow the cams, but I've never inspected valves before so don't really know what to look for. What could be causing this loss of power and incredibly loud noise?
Last August I bought a 2002 Ford F 150 extended cab 4x4 only until the weather got really cold did I start noticing this kind of like almost vibration or like the rear end is slipping but it doesn't happen all the time it only happens when I take off but once I get driving then it goes away...
View 4 RepliesMy husband bought a 1997 Ford F150 and the seller said he changed the brake lines, but the back brakes have dragged on takeoff since he bought it. Just put new shoes on it and it's still doing the same thing, but now the drums are getting hot. Is it possible that the seller got the brake line backwards and that might make the back brakes drag?
View 2 RepliesSo for the past few months I have been hearing a knock sound when taking off from a stop. It does it every time, and its loud enough to hear distinctly. It sounds like it is coming from underneath the cab, maybe the trans or rear engine area. I thought maybe a mount. It only does it when taking off from a stop it does not do it while driving. Where to start. I hope it isn't serious, at this point it is more annoying than anything else.
View 8 RepliesI have a 2001 F450 7.3 chassis cab with just over 100k. I have a new problem... So far on two different occasions the service engine came on followed by a loss of power under a load and white smoke from the exhaust. Took it to the shop the first time, they determined it to be a dirty air filter, which seemed odd since it just happened all of a sudden. They changed air & fuel filter, problem gone- for two weeks..
View 8 RepliesReplaced the spark plugs and wires a couple months ago. Started skipping yesterday throwing the #4 misfire code so I replaced the coil pack, reset the check engine light but it's since came back on and has a rough idle and loss of power. By the way, it's a 97 F150 4.6L 4x4 with 200,000 miles.
View 4 Replies1997 F150 4X4 4.6 engine with 285,000 miles
Truck was running perfect down the road, then suddenly it lost power and started missing at all RPM ranges. So i keep driving another 6 miles and then POOF the miss is gone and truck runs perfect. Couple hours later i hop back in it and its running good and then suddenly it starts missing and loosing power again except this time it never started running good again. Never did throw a CEL.
I hooked up my SCT Tuner (for my F250) to check for codes and came up with P0171 which indicated one of the banks was running lean, but no missfire codes. Did a search on here and learned the common problems(vacum leak) of that code.
Found the vacum leak at the PVC elbow, so i replaced both ends of the plastic tube.
Pulled the throttle body elbow and cleaned out the clogged up EGR ports.
Put a new air filter in and took the MAF out and cleaned it with MAF cleaner.
Put it back together and it idled way better but still ran like crap with the bad miss/sputter. Ran it down the road a few miles and came back thinking of the catalytic converter, i crawled underneath and it was glowing red. It does run and feel like the converter is stopped up but if i have a dead miss and dumping fuel wouldnt that make it glow red to or no? Still no CEL and now no codes.
Also i held the engine at about 1000 rpms where i could here the miss good and unplugged the fuel injectors one at a time to see if that made a difference. Each one i unplugged made it miss worse, so wouldnt that tell me that all 8 cylinders are firing?
And i changed the spark plugs (motorcraft) 250 miles ago.
So it still cranks and runs smooth after a cold soak overnight and then after a mile of driving or less it starts the dead miss/sputter and loss of power.
I have a M5OD that I replaced the clutch in in my '99 150 4wd in December . Manual Tranny. Now when taking off in 1st gear the transmission seems to be sliding or shifting backwards, but only in first gear. Got under my truck and looked, can't find any identifying marks to where it might be moving or what is causing this. All frame mounts are tight and the bell housing is flush with the motor. Yes, i did do the clutch change myself in shop class.
View 1 RepliesVehicle: 01 F150 5.4 4wd
issue: snapping sound like crushing tin can at take off and now at a fast stop.
Repairs already done:
upper control arms
lower ball joints
Sway bar link and bushing
4wd cv axle shaft assembly (both side )
Slip yoke grease.
Tie rod ends replace inner and outer
I put the truck an a lift and put it on drive and there is no sound.