Toyota - 4Runner :: 1991 - Dramatically Loses Power On Highway But Fine Around Town
May 6, 2012
My 91 4 runner, with 192k miles, has very scarily lost power twice on the highway. She gets to about 50mph and then drops to 40, 30, 20 rapidly. First time I had her towed because I didn't want to take the chance I couldn't arrive safely at mechanic. 2nd time, I just sat for awhile with her running, and tried and succeeded to get her to mechanic. First time, mechanic thought there was some boot loose around the fuel line.Second time, mechanic is stumped.
She has new fuel & air filter (and battery + leads); catalytic converter tested fine. Had a tuneup less than 5k miles ago.While I feel safe driving around town, I am terrified of highway driving and need getting it fixed so I can resume highway driving.
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My Toyota is leaking oil from above the oil pan, in the front. I think it is we're the crank shaft plate is. Do I have to pull the engine to replace the gasket
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After some off-roading and hit some pretty big bumps at speed, and now my steering wheel is about 15 degrees off, but the car is not pulling.
I am in another country where I don't speak the language well, so what should be done to fix this. I took it into the shop, and they pulled the car onto some electronic sensors and said the alignment was fine. They did a very visual inspection (glance?) under the car as well, and were ready to send me on my way.
I showed them that the steering wheel was off, and their solution was to just take off the wheel and put it back on straight. Is this what should be done to fix this problem? I do believe the alignment of the cars is okay because it's driving fine, but I'm still not sure if there is something else going on that caused the steering wheel to be knocked out of line. I've been doing some online searching and I'm not so sure that they are doing the right thing.
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I have a 1991 toyota 4runner with 4wheel drive stick shift and it has been making a loud rrrrrrrrrrrr sound. It seemed like it was coming from the front right wheel or somewhere close to that area, so I checked the brake pads and rotor for rocks or any other object that might have gotten stuck. There was nothing stuck, however I did notice that the boots were ripped. So I changed both front axles and I also replaced the wheel bearing only from where the noise appears to be coming from. The noise is still there. It makes the noise sometimes, if i'm going slow or fast. Other than that, the car drives well.
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My 2001 Buick Lesabre 3.8 loses power at highway speeds, sets a PO101 code (MAF sensor). I have replaced the MAF sensor 3 times, as well as the coolant temperature sensor, the crank position sensor, the throttle position sensor, the MAP sensor, the intake manifold gaskets (upper and lower) , the pcv valve, the egr valve, the Idle air control sensor. After cruising at highway speed for about 3 miles the car still loses power for about 20 seconds then gradually regains power only to repeat the fault again 3 or 4 miles down the road.
Otherwise the car has plenty of power quickly achieving 100+ mph going though the gears smoothly and normally. I have inspected the intake plenum and vacuum hoses for leaks and have found none, all in very good condition. The car ha 122,000 miles on it and has been well cared for, very clean under the hood with no leaks. I did reduce the egr chimney size to 3/8" while replacing the intake gaskets and that reduced the symptoms somewhat, i.e., the car only loses about 15 mph instead of dropping to about 25 mph before recovering.
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1998 discovery. Replaced fuel pump, crank shaft sensor, battery is good, had tune -up. Driving on highway and car just loses engine power, still have radio, lights, etc. Pull over and start it right back up. Drive about 15 minutes more and it happens again. Starts again. Then it does it again, but now won't start. Clicking sound in dash on passenger side. I leave it sit for 2 days. Starts right up, then rpms start revving then stops and dies. I have had every diagnostic known run, no codes coming up. I have had local mechanic keep it for days to drive it. He is also at a loss. I am REALLY tired of replacing random parts to no avail. Not to mention the $$ I have spent.
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2006' screw, 5.4L, 116K miles ... The truck looses power at highway speeds to the point that I need to pull off of the road. When this happens the check engine light is on and the truck is still running but will not accelerate, is it possible the computer is going into limp mode and if so what would cause this?
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I am all of a sudden getting really bad gas mileage on my truck and have no power. The "check engine" light was on and I changed the O2 sensor, and the light went off, but am still getting about 15 miles/gallon as opposed to the 22 I was getting. Changed my spark plugs about 1 year ago.
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I have a 2000 Toyota Corolla with about 170,000 miles. It idles rough and at about 50-55 mph it loses power and runs very poorly, like it is not banging on all cylinders.
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The car has gradually lost power over time, first it would take time to get up to speed and now it will idle but as soon as you put it in gear you have to push the gas pedal all the way to the floor just to go 2 miles per hr... I changed the fuel pump and filter, gave it a tune up with new plugs, wires, cap, rotor...bypassed the catalytic converter...it has a carburetor on it ...at a loss
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My 2006 Prius used to get GREAt gas mileage - 48 mpg around town and 55 mpg on the highway. Recently and all of a sudden, my mpg's have taken a nose dive. I now get 35 mpg! When I'm on the highway, I barely get 44 mpg. I took it to the dealer and they couldn't find anything so they are insistant that it's my driving, oxygenated gas and/or my tire pressure (even though they didn't check the tire pressure).
My driving hasn't changed; my friend with a 2004 Prius buys her gas at the same station and she's still getting ~48 mpg so I'm thinking it's not the gas; and I am OCD about keeping my pressure constant. (I own a compressor and check the tire pressure A LOT.) I drive 5 miles to work - about 15-20 minutes - on relatively level paved roads. About 2-3 times a week I travel longer distances at highway speed. I wash and wax the car fairly regularly to reduce wind drag. I have noticed periodically when I'm coasting downhill, my mpg's are less than 20 mpg so I'm thinking something's terribly wrong.
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we have just pulled out head resurfaced and put engine back together now it won't start tried the timing and checked for fuel but wont start the only way it starts now is with brake fluid in the intake but that only fires up and won't stay idle.
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I have a 91 4Runner SR5 V6 3.0L that has been a great truck (like all of them?) until just recently.
Symptoms are bogging at roughly 25 mph or 2500 rpm in second to third gear. It will also sometimes not take off from a stop at a slight incline. By hammering the throttle down and forcing a downshift, the truck will rev up and then accelerate, but then again sometimes bog down until the same "forced shift" is done.
This seems prevalent when the engine is hot, however, that may be coincidental with the high temps here in So Texas lately. The truck does seem to run fine for a while after starting it. Mechanic hasn't isolated anything.
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'91 4Runner, V6, 3.0, 113K miles. It has a nasty bog on takeoff, doesn't seem to clear out until over 35 mph on flat ground, and you can forget about starting from a dead stop going up any sort of incline.
It still has the stock plugs, so I figured those were up for changing anyway. While I was at the shop, I went ahead and picked up a new air and fuel filter. I decided to try one thing at a time, started with plugs, got em in fine, took it around the block, wouldn't idle, sputtered pretty bad, stalled at every stop sign.
I figured that the fuel filter was in fact clogged, and maybe the new plugs were causing it to starve for gas? Crawled under the car, and the cat converter was cherry red hot. I put in maybe half a mile, so could that be my problem? It has begun to rain, so I have not installed the fuel filter. I've heard some stuff about sensors going bad, namely the CTS, but that is getting a bit in over my head.
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My 2000 Toyota Corolla, automatic, loses power when I decelerate after driving for a short distance when I am entering the freeway and trying to accelerate on the ramp and then into traffic. The car never dies or turns off, but loses power and "coasts"; as I coast along and try to get out of the traffic, I press the accelerator pedal almost to the floor and within 5-10 seconds the car will roar to life and accelerate like it's getting all the power it needs. That's usually the end of it for that day...however, there is often some hesitation as I continue driving. This doesn't happen all the time, but almost always when it's been outside all day and the temperature has been at freezing or below...usually when my car has sat all day while I'm at work. My mechanic hasn't had time to look at it yet but has suggested perhaps a bad switch of some kind or maybe a dirty switch. Also, this may be unrelated, but often before this happens the brake light will sometimes come on and stay on...even though the brake isn't on, nor has it been on while parked. This never has happened in the mornings after my car has been in the garage all night.
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I have Toyota 4runner 1996 4 cylinder. it was running good (from time to time I would lose power for 2 to 10 second than it go back to normal acceleration). I had the check engine light on for almost 8 month. last week I took the car to mechanic shop for diagnosis. the mechanic changed the spark plugs and after that the engine lost power. the car cannot go over 30 or 35 mile per hour. He changed the spark plugs and put different ones, same thing he put the old ones back same problem, he changed the wires, the fuel filter, air filter, the distributor and rotor, but still the same problem. the problem is that the check engine light is off now and there no codes.
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My 97 toyota 4-runner has now had three times with a loss of power making me unable to drive the car. The first time behaved differently than the last two times. Currently, I can't drive the car.
The first time, I had just filled up the gas tank (while the station underground tank was being filled). About 10-15 minutes later while on the interstate, I had a sudden loss of power and the vehicle eventually would not move forward at all. The idle was fine. I had it towed to my mechanic thinking I had gotten a back tank of gas. I believe the check engine light was on... he determined that it was a bad mass air flow sensor and replaced that. He said the filling of the tank was co-incidental.
Months later (Jan. 2015), during our first cold spell, I had driven the car, parked it overnight in temperatures of 9 degrees. The next morning it didn't want to start. I finally got it to idle to warm up in neutral, but then when I would give it gas to move it, it would stall. I finally got it to stay on and to move with barely enough power to drive it the mile to the mechanics. On the way it started "back-firing" under the hood and smelling progressively hotter although the engine heat light was normal. By the time I got it to the mechanic going about 5-10 mph, I thought it was going to catch fire, it smelled so bad. Check engine light never came on. The car sat there unmoved for two weeks while I was out of town. After the two weeks, the mechanic finally checked out the car (outside temp was now up in the 30's & 40's) he got it to start and drive, but it was "running rough". He cleaned up the connections on the coil, which had some corrosion and gave me back the car -- no charge.
It ran fine until yesterday, when the same scenario played out. Another cold snap (-4 degrees). Drove the car across town to do errands and fill the gas tank. parked it overnight. The next morning I couldn't get to start initially. Finally got it to idle. Warmed it up for 30 minutes but it would not stay running if I took it out of neutral and gave it any gas. Check engine light did not come on. This time the car is 30 miles away from my mechanic and I don't want to have it towed if I don't have to....
My mechanic thinks it's either a fuel or oxygen issue. He told me to have someone bang on the bottom of the fuel tanks while I try to start it to see if that effects anything.
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I get two codes both p0325....
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5.4L... My truck has a momentary moan / growl / bog down issue. It happens at town and highway speeds and usually when I have cruise on OR when I lightly apply the gas peddle. It moans for a few seconds and seems to bog down then comes out of it and carry's on its way. You can hear it plainly while driving even with radio on. I have a regular muffler on the truck but when this happens, it makes it sound like I have a catback on it.
Things i have done...
- New air filter
- New oil/filter
- New fuel filter
- Ran techron injector cleaner through tank of gas
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I have a 2006 Scion XB I purchased last year. Last week the air was blowing cold in town and then blowing warm at highway speed. I took it to my mechanic who charged the system (said it was a pound low) and said he did not detect any leaks. Now suddenly it stops blowing cold altogether. Not all the time. It blows cold in the morning. Then in the afternoon when I leave work it blows hot. But I can stop the car a few miles down the road, turn the car off, start it back up, and it blows cold....
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I was driving yesterday and my Toyota pickup started losing power. If I let off the gas at a stop it would rapidly die. I managed to get it home but had to floor it just to get it going in 1st and 2nd gear, and if it was in neutral it would die without giving it a lot of gas. The only way it will start is if I give it a lot of gas while turning the ignition, and have to keep the RPM's up to keep it running. Looked under the hood while it was running and when I let off the throttle the entire motor would shake violently. Cant tell if it's just not getting fuel correctly or if it blew a head gasket maybe. Seems like it might only be firing on 2 or 3 cylinders.
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