Ford F-150 - 1997-2003 :: Losing Power On Hills - Accelerating Very Poorly?
Jul 8, 2010
Truck started just fine this morning, was driving for about 15 minutes and it started to lose power going up a gradual incline. I didn't even think of it really and so I just pushed the pedal in a bit and no increase in power, in fact it bogged down. I let up and went back to the gas and same thing. This was barely pressing the pedal down. I got to the top of the incline and started back down a bit and gained speed (dropped from 55-60 to 40 at the crest) up to 55, hit level ground and started to lose power again, and it felt for the life of me like the truck was fighting for every ounce of power it could get. Everytime I would step on it it would bog down again. I nursed it to an appointment I had, and when I got done with that I started back home. Same thing. It would accelerate from a stop up to 30 (I've always been a laid back accelerater) and when I would read 35-45 it would start to dog again. I got it back home.
2nd issue: On the way home I had to stop at a highway crossing on a slight inline. There the truck started to shudder a bit. and if I would just touch the gas pedal it would bog down. I played with it a bit and got it to rev a bit. put it in reverse got away from the intersection and let it idle a bit when It died. started right back up, no problem. would play with the accelerator and same thing. I finally got it to rev a bit and 2 footed it back home slipping from neutral to drive.
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My 2.4L 03 XLE with 220k on it is losing power. Running fine other than not accelerating or going up hills as well as it was last week. I have P420 cat code for the past 40K. It also has the typical smoky start from leaking valve seals and uses about a quart every 1k miles.
Ran a can of 44k through it and I'm about to pull the plugs and see what shape they are in, but I'm wondering if this loss of power might be the cat. I've been searching and it seems a plugged cat is a common cause for power loss. Seems likely since I use so much oil.
Seen the DIY replacement and leaky seals Rockauto suggested replacement Eastern ECOIII as well as the Walker.
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2006 van. It is a work van use it every day and travel the same road every day. Pull the same hill every day use to hit the bottom at 70 and crest it at 60, now I'm down to 45 mph.
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I have a 1986 Toyota pickup. It's small 2 wheel drive with a stick shift. 6 weeks ago, it started lugging very slightly on hills after I had first started the car (only in the first 5 minutes of driving). Then that stopped, and now it loses power on hills so that I have to keep shifting down and going slower until I'm chugging uphill in 2nd gear at 30 mph. It only happens on long hills with a sustained uphill; smaller ones it keeps speed and power fine.
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My 2002 Echo Sportivo is losing power on hills,which is bad news as live in a hilly district. If I don't get a run up i.e lights change it's 40km/h all the way with my foot to the floor and lots of angry drivers behind me. Apart from this runs well?
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Our 2002 Hyundai Elantra is having issues. It shifts fine, no need to double-clutch. It stays in gear. Doesn't grind or anything crazy like that. It does seem like it isn't getting power to the drivetrain, and is having trouble climbing hills. This all came on very suddenly. Hubby thinks it's the clutch -- I think it may be the bushings. Though now, I'm wondering if it's something else? Since it's not having trouble shifting, should we be looking at the fuel system? Sensors? Engine seals?
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I have a 1997 f150 lariat 4.6, at some point i started losing power, so of course I had my friend come by and check all the mechanics under neath the hood and besides needing caps and rotors all seemed well under there, so twice I've put it on a computer and it needs and o2 sensor, I've already checked my Cadillac coverter , and dropped and replaced my gas tank twice, I ended up having to replace a shock, it does run better when i put heat through it for a short time.
I've been checking my antifreeze and I am not losing none, I also did regular maintenance to it to figuring it was a fowled plug but still no good , so whats next ? coils ? I didn't replace my plug wires but I checked them all and they looked to be in good condition and I have a transmission filter kit to change that out I don't believe its been done ever ..
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2001 F150! It does this weird little surge, burping and farting away...but only in ambient heat. The engine never gets hot, it never over heats. What have we done? A full tuneup with new plugs and boots, oil change, new air filter, gas filter. It did it again...took it back in and had the fuel pressure checked, fuel injectors are fine...it can't be the fuel pump, it runs great unless it is hot weather. It has twice blown the P0171 system lean bank 1 code and has gone away after the tuneup and again after the new o2 sensor. It runs great, except in hot weather, starts surging and losing power...
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I recently bought a 4.2L V6 2003 F150 with only 20,350 original miles. This car belonged to an older gent who barely used it, then passed on about 3 years ago, and truck sat around barely used by anyone. When I picked it up I ran some Seafoam through the first two gas tanks as it was occasionally running rough and losing power. Since then truck has been running incredibly smooth, but in the last few days it is getting harder to start. If I pumped it two or three times it would start OK, but today I have had to pump it while cranking it to get it to start. ( the pumping may have nothing to do with it starting)
I am replacing the fuel filter in the next couple of days, as any accumulated junk that was in the tank or lines is now probably in the filter, but it seems that a badly clogged filter would also give me some problems running, and it runs really smooth once it starts. I get a pressure gauge, (I understand the rails have a pressure test port) what pressures should I expect at what moments?
Turn key on :
Crank engine :
I am brand new to the F150 and trucks in general.
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I have a 1992 F-150 straight 6. Several days ago it started running rough and losing power and the trans shifted hard.
I put my code reader on it this morning and it read codes 332 and 334 - Insufficient EGR flow detected and EGR closed valve voltage high...
I have looked for vacuum leaks and found nothing. Is it possible the EGR valve is stuck?
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03 supercrew 5.4. I've been having problems climbing hills. I'm on a trip and the truck surged fron do then to drive and stopped. Let it sit for 30 mins or so and it was good. Drove another 500 miles ans started again going up some hills. The first time it was 110 out and the 2nd it was 90. I'm pretty sure it's a cop but of course no cel. It does not seem to of over heated either. Can the cops overheat? Do you recommend a diagnostic, will this show up if no cel has show?
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I pulled with my 2000 F250 7.3 for the first time yesterday pulling a 12,500 5th wheel and then again today with an 18 ft ski boat weighting around 3500 for both the trailer and boat. I had this same issue pulling both.
Today when pulling the boat/trailer i was behind a slow moving truck and when we hit a hill with a passing lane i merged over and wanted to start passing him. We started off at around 45 mph up the hill and as I started pushing the pedal I wasn't gaining any speed and my rpm's didn't even get over 1500. It felt like a stall and continued that at around 45-50 mph up the hill (about a 65 degree slope). When I'm not towing the truck runs great, plenty of power and averaging around 16 1/2 mpg.
Only mods i have is a 6647 Napa filter, muffler delete and it's running the same 4 position TS tuner from the original owner. During normal operation I run it at the 75hp gain and when towing i use the 50hp gain.
In both instances i could see black smoke coming from exhaust when pushing the pedal but my rpm's wouldn't go up and truck maintained the slow speed going up the hill. Once at the top it drove normal and picked up speed without any problems.
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So I got a new tranny about a month ago. Everything works flawlessly. Until today.... Going up hills even small ones feels like I'm towing a house. No torque felling. In 3rd and 4th gear (automatic) it gains boost really fast and peaks at 28 lbs. and coasting downhill it slows itself down. I can go from 60 to 40 without braking in a half mile stretch. I fist noticed something was different when I started to drive home tonight; it makes a sort of whining or howling noise. I can't quite pinpoint where it's coming from. I'm tired of this truck but love it at the same time.
2003 125k miles New tranny New injectors New oil cooler and egr cooler Possible bad HPOP
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My 4.2 l f150 has been losing a lot of oil.7quarts in a week.the truck runs great and it does not smoke.i have been under the truck looking for any significant leaks.I left it parked on concrete overnight no oil drips. I've had my wife rev it up while I was under the truck cannot find anything
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So in my 2003 F150 I have been losing small amounts of oil. I changed my oil about 2 months ago, and after I checked it yesterday the dip stick was almost bone dry. There are no external leaks but I noticed that I keep getting oil coming out of my PCV valve into my throttle body (the other end of that valve is connected to my valve cover). Is that normal or what? Where else could my oil be going? Cracked head?
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My 2002 Hyundai elantra gls has had a problem with losing power when accelerating from a light. only after filling up gas and has done it only three times. I cleaned throttle body and noticed the mass air flow sensor is missing and wiring. I went to AutoZone and no check engine light for mass air flow sensor and that I have one for fuel pressure sensor in tank. I don't wanna throw money in to the mass air flow sensor if my problem is the fuel tank pressure sensor.
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I have a 2002 f150 5.4 4x4 with 151,000 miles. I am using a lot of oil but its not leaking out. What should I do to fix problem.
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I have a 2001 F650 7 speed with 7.3l powerstroke and I am pulling a 15,000 pound fifth wheel. It is very new to me and just doesn't seem to have the pulling power. It seems to struggle even on flat going 65mph and when it comes to hills it really slows down. Should I be looking into power chips? If so, which one? Is there something else that may be preventing the full power?
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About mid-October I noticed when it as real cold out and I had the heat running whenever I would come to a stop I noticed there is very little to no heat coming from the vents, despite the engine being warm and running at operating temps. At the time I was working for a shop and I asked one of the mechanics what the problem was. He said that it was the radiator not having enough coolant.
Turns out when we pulled the cap the coolant res, was just about bone dry. So we added in about a gallon or so of coolant with the truck running and sure enough at idle the heat was back.
Fast forward to the last couple of weeks and when I am sitting at idle again same thing happens. So somehow the engine is losing coolant. Its not ending up in the oil (no white on the dipstick) and there is not a coolant leak. As it sits there is 255,300 miles on the truck now. 1999 5.4L F150....
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I just bought a 97 F250 with a 5.8 in it. Im loosing coolant somewhere. Did a pressure test it checked out fine, no steam from exhaust, no coolant in oil. Nothing on the ground, it making me nuts. Truck has 182000 miles on it but its clean, no rust and runs to good. I don't know much about Fords but someone told me it could be air pockets. It just got a new radiator b4 I bought it.
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Recently my car a 01 echo has been randomly losing power and accelerating slowing. Sometimes if I let off on the gas pedal and reapply it, it clears up and runs fines. There are no check engine lights and no codes stored. car has 213k miles on it.
I had replaced the fuel filter, fuel pump, both o2 sensors and cat, have noticed a break behind the resonator could this be causing it?
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