Prius (2001-03) :: Loss Of Power While Traveling At About 70 Mph
Oct 22, 2011
I bought my 2001 Prius used about a year and a half ago and had no problems until the past couple of months. On three occasions now, the triangle warning light has come up on the screen while I was driving and the car wouldn't accelerate when I pushed the gas pedal.
Fortunately, the I was able to coast to the side of the road on each occasion, and when I turned the car off and restarted it, it worked fine. The first two times, it happened on the freeway after a lengthy drive and while traveling at about 70 mph. Today it happened on a surface street, but after I had been on the freeway (in gridlock) for nearly an hour.
I should have dealt with this sooner, but somehow every time it has happened, it was on the weekend and/or when I was out of town, so I couldn't immediately take it to a shop, and since the car started back up immediately and ran fine after each occurrence, it didn't seem urgent.
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The other night around 11pm my car lost power on the highway. I was traveling 80 MPH. The RPMs would not stay up no matter how much I pumped the gas pedal. The car did not die though. I would hold an idle, but felt like it was missing a little.I had the car towed to my hotel. Two days later I tried to drive the car to a mechanic. The car started up fine. It drove for about300 ft and stopped moving again. The car did not die and would hold the idle.Towed to the mechanic. It sat over a Monday holiday in his lot. On Wednesday I called to see how it was coming on the car. They put it on the computer and the only thing that came up was an engine misfire. They have been driving the car for 2 days with no incident.They have not done anything to the car as they don't want to throw money or parts at it not knowing what the car is doing. Feels like a fuel restriction but it idles. Stalling Lexus IS300...
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Recently I had a radiator hose split while traveling. The EOT got up to 250 degrees before I could pull over and stop the truck. I flushed the cooling system with water, replaced the thermostat, and added Ford Gold coolant as per the recommendations in the Tech folder. My oil temps are higher now than prior to this incident. Unloaded on a flat road my deltas are about 10 to 12 degrees @ 60 mph.
My water temp will stay around 190 to 195 degrees while my EOT have reached 212-215. I pulled a small utility trailer and saw a delta of 17 degrees this was at about 75 mph. Typically unloaded I would only see a delta of about 8 degrees and this was at 80mph. My question is do you think a EOT of 250 would burn the oil, I had Shell Rotella T5 5W40 in the engine. Would it be possible that the oil cooler is partially plugged from this temp?
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I was driving at 60 mph and the master warning light came on. What may have caused this.
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I have a 97 Pontiac Transport and I was traveling down the road and suddenly i lost oil pressure the light came on and it started clattering so I checked the oil level and it was fine so i had it towed home. I changed the oil using a higher grade oil and lucas oil treatment and started it ...I still have the problem what do i do...
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I've been having this problem where as i'm driving (mostly highway) all of a sudden I get the feeling like i've let go of the gas pedal but I haven't. The mpg meter goes from about 40 to 100 as if its on straight battery power and I have to really press the pedal down to get any decent acceleration. Once in awhile i'll get the big orange triangle warning and the little pic of an exclamation point in an outline of a car. But after a day it may go away.
One time it didn't and I brought it in. I spent 80 bucks for them to find nothing wrong and say the alert had something to do with an oxygen sensor (its was awhile ago, i dont quite remember exactly)
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My daughter has a 2001 Prius with about 165,000 miles on it. She was driving it and the red high temp light came on and stayed on. She also said that a few minutes later she lost power. She stopped and turned it off. Waited a few minutes, and started it again. The light went off and she drove it home about 5 miles. The light came on when she got home. No engine codes. I changed the thermostat. I filled it back up with fresh antifreeze and water and took out to test drive. No leaks. 2 miles down the road the light came back on. I stopped and checked it. upper radiator hose, hot and lower hose cold. Radiator not warm. Blowing out hot air with the heater. I think the water pump belt is on, as i am at work right now but will check as soon as I get home. I took the old thermostat and put it in a pan of boiling water and it opened, so apparently it was the thermostat.
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This just recently started happening just shy of 200k miles, 14 years. While driving down the road, suddenly notice a power loss or no power, i.e., no motor output. Sometimes the just the ICE won't accelerate, sometimes it's both ICE and Electric motive force. When this occurs, the Brake and ABS check lights turn on. After a few seconds, to 10's of seconds, then the motive power reenables and the Brake/ABS lights go out. Often the cars continues on with no repeat. Testing over a few drives, it seemed to only do it during the warmup cycle when coolant was near 160-170.
However on a drive in the afternoon after it occurred in the morning; with ambient around 30 degrees, windows cracked, interior heat off, it didn't occur on the 15 minute drive, mostly freeway speed, even after about 10 minutes and cranking interior heat on. No codes are registered when this happens. I used Torque Pro and monitored things like throttle position and such, and things there seemed normal. Eng rpm dropped under 1000rpm and wasn't steady. Watching the MFG the power flows responded to the throttle (pushed/released) as if the engine was still doing what was asked (go figure, the display shows what is commanded, not what is occurring?).
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What is probably a common Santa Fe issue. I have a 2005 V6 2.7L model which has traveled 81,000 miles (131,000km). The power steering is and has been working fine, but over recent week has developed 2 symptoms :
a) The reservoir overflows (see pic)
b) There is a whining noise when the vehicle is traveling and when turning the sounds modifies to more of pressure-release type sound. When the vehicle is stationary, the noise is very evident when turning the steering wheel (See video here : Power steering noise - YouTube )
Other things to report are that the reservoir is full but has not needed a top-up for months. The power steering pump appears to be leak free. I have a slow drip from the rack & opinion area (detected at Hyundai first service - about a few drips per day and they decided it didn't warrant fixing)
I have read on this forum the issue may be related to the reservoir filter becoming blocked and this ties in with the fact the rack and pinion has a known drip leak, but I never need to top-up the reservoir.
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Dad 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.
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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.
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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?
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I 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..
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2001 Hyundai Elantra GLS ... I don't know what is going on with my car. When I start it, put it in gear and try to pull out, it feels like there is a loss of power. A few seconds later, the power returns . I can push my foot down, and the engine doesn't rev, but then it's like all of a sudden the engine realizes I have my foot down and takes off.
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Mine is 2006 with 130k miles. Just replaced fuel filter, air filter, cleaned air flow sensor and cleaned the injectors. The car still feels slow and it seems to eat more fuel than before. The spark plugs and the wires seems to be ok. No warning or error on dash is displayed.
When push the accelerator it takes a while to respond starting from stop position, and when the car is moving and try go faster it feels like lazy so I have remove the feet of the pedal and push it again so it respond quickly.
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I have lost significant power to my 2001 B5 1.8T, my first though is that it was the turbo, i took it to a mechanic who said it could either be the CAT or the Turbo but wants to charge me two hours of labor to find out. Is there any simple way to determine what is the source of my lack of power? I know the turbo is not working at all but the mechanic said that it could be because of a dead CAT and the turbo could actually be fine. I do not have any fault codes which makes this even more strange. Also even with the lack of power I have still been driving it because I need a car, what's the potential harm. The car runs normally, its just slow, it doesn't make funny noises or anything.
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My friend has a 2003 4 cyl auto Elantra. His problem is strange, while driving the car is normal for maybe 1 - 5 hours then out of nowhere the car will only go 15-35mph and no matter how much you press the gas pedal the car will not accelerate. It is a bogged down loss of power not like it's just stuck in a low gear. This has been happening for a while now but now it's happening all the time and very frequently. Before he could shut the car off for 5 minutes and it would be ok for another 1-5 hours. It got so bad that he can only go 20 miles before it happens and now it seems the longer he lets the car sit off the longer he can go before the problem happens. Hyundai has had the car for a week and still have no clue what the problem is but it has not happened while they have had it. There is no CEL or any stored codes which is making this really hard.
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Firstly, I've had an extensive look through the forum for existing threads dealing with this issue and have found a couple that seem to match... however I'm not entirely sure because noted that they had the car CEL come on... My wife's car doesn't. These threads dealt with gear shift flare, range selector switch faults, ECM reprogram - RPM flatspot... All except the latter noted that the CEL light came on...
Our problem - Loss of power and speed at 100km/h (auto trans)
In fourth gear (auto) traveling at 100km/h, RPM at this stage has settled to around 2100-2300. Then kicks down into 3rd (I'm assuming) with RPM just above 3000, and with little acceleration slowly build up to 100km/h and then start losing.
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My 01 VW Jetta with 181690 miles started having intermittent loss of power a year ago:
1) it never conks out;
2) it loses power on the highway at 70 or in town at 25;
3) engine is usually hot, about an hour into a trip, but now does it cold, too;
4) weather doesn't matter: dry or wet;
5) check engine light flashes while it happens
6) it feels like it's running out of gas but isn't.
Mechanics have tried the following: Note: every time I brought it in to be looked at, the symptoms above were happening :
1) March 2013: replaced coil pack and it ran fine until Sep;
2) Sep 2013: ran Dx on check engine light: "arching all over the place" so replace spark plug wires;
3) Dec 2013: got oil changed
4) Jan 2014: ran Dx and was told crack in piston;
5) Jan 2014: got second opinion and told wrong spark plugs were used (single electrode vs triple electrode)-replaced all spark plugs; got car inspected and had oil changed again as it was dirty;
6) Feb 2014 mechanic is stumped, but found an article about clean oil and changed the oil again. Oil was down almost a quart.
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Check Engine light is on but car seems to be running OK (getting 40mpg). I do notice that the car seems to rely on the Gas more than the battery than it used to.
My question is, will MPG start to drop gradually until one day the Traction Battery is just dead or will the car go from running well to not running well in minutes.
My shop says it needs a battery but it's not in the budget at the moment so I need to see if I can postpone it until the new year.
2003, 145k, just bought it 3 months ago
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'01 Silverado with the 4.8, sitting at 160k right now. I'm starting to notice a loss of power in the truck, when pulling out and accelerating it doesn't put you back in the seat like it used to and when going up a hill you have to force a downshift to not lose 15-20mph... it just seems like I'm pulling an invisible trailer back there. The fuel pump is about 1 year old, fuel filter less than 3 months, plugs and wires are about a year and a half old, PCV valve about 6 months old, fuel pressure regulator about a year old..
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