Camry :: 2005 LE Surging Under Acceleration Or When Tranny Downshifts
Jan 2, 2016
The vehicle I am working on is a 2005 Camry LE with the 2.4L I4 with 172,000 miles. The problem is it surges under acceleration or when the tranny downshifts and engine is under load going up a hill.car idles fine and runs good otherwise. Its hard to explain the surging without driving it yourself but I will tell what I have done so far and car is not showing CEL.
-replaced the AFR sensor (Bosch)
-replaced the O2 sensor (denso)
- plugs look good (no fouling)
I am thinking maybe the throttle position sensor or MAF sensor. What to check next.
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I just notice this problem after I bought this used 05 Camry I4. When I was running at a mild speed said 30-40 miles, the engine will accelerate by itself and the RMP will jump to around 3000-4000 instantly with a pretty loud noise like you are stepping on gas while stay at N gear and the speed won't go up a little bit. The problem seems won't cause much impacts on driving since the RMP will drop to normal very quickly and such thing only happen occasionally. After doing some search online, I really don't know what kind of problem it is, I did check my transmission fluid lever and found it is in normal area.
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If I understand correctly my 2004 Expedition has the 4R75E transmission. We are experiencing a clunk upon acceleration when the truck downshifts from 4th to 2nd. I had the fluid & filter changed, flushed the transmission with cleaner. It still does it but not all the time. I turned OD off and I didn't notice the problem when shifting from 3 to 2.
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I just bought an 05 Camry with 40k miles. Runs great. Decided I'd have a tranny flush and coolant flush done. Oil was done recently. A couple hundred miles later and today I've got a noticeable hesitation when accelerating. It's not a herky jerky stutter, but a smooth, consistent like a loss of power like I'm quickly letting my foot off and back on the accelerator. Doesn't seem to do it when not in gear, just under acceleration. Checked trsnny fluid and it's ok and full.
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We have a 2007 Limited that we love everything about except the way the transmission downshifts to first gear when it seems to me it should stay in second. My inlaws have a 2007 XLS and it doesn't do this. This is our third Avalon and the only one to do this. The dealer we bought from says this is normal but I strongly disagree. Is there a service bulletin on this or what else can be done.
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I just bought an 05' SE V6, with the 3.3 engine. Seemed to run good, had it checked by shop and they said it was a good buy, so i bought it. First day I owned it, took it to toyota dealership and had them do a 90, 000 mi service. did a timing belt, water pump, tranny flush, oil change. I got the car back, and it ran like crap! It would stumble on hard acceleration, and seem to even surge a bit at times. I took it right back? Service rep tried to say I put in diesel or bad gas. I only filled up with chevron premium, which is only gas i ever use. I know how to put gas in my tank!
Any how, they checked timing belt and said it was right, but the timing gear needed to be changed because one tooth looked rounded off. That didn't work either, still stumbled on acceleration, but idled perfect @ 675 rpms. So now the serv. manager gets involved, says he wants me satisfied. they then drained all my gas, then re-fill it. then flushed out all injectors. then put in all new plugs and PCV valve. I did a pressure test of fuel system, said it was good. While they were changing the plugs, they did a complete 6 cylinder compression test and scope analysis, and it came back good, too! I pick it up cause i got to go back. It ran a lot better but still stumbles on hard acceleration on highway. drove 1250 miles back, didn't use a drop of oil.
I did notice when I got 100 miles the temp gauge dropped all the way down to second mark on cold for a little bit, but went back to normal temp and stayed there through the last 1100 miles(that scared me, so i watched temp gauge like a hawk). And the outside temp was @ 62 degrees when the temp dropped at 1200 ft. Elevation...maybe it got stuck and is ok? My CEL has never came on through all this, and it does work, I have made sure of that.
I bought this car from original owner, and they had engine and heads just replaced in 2008 at 44,000 miles at toyota dealership under warranty fot 10,000 dollars. i verified this with that dealership 3 times with 3 different reps at that dealership. old owner said he was having problems with engine stumbling, and took it in twice and dealership said it was ok each time, not throwing any codes and sent him away saying car was ok.
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I own a 05' MCV36R and have noticed a strange acceleration issue in the past few months. In low gears the car seems to be lurching back and forth. The RPMs are consistent with this jumping up and down. The car doesn't have any issues when travelling at faster speeds, but perhaps i'm just unable to tell.
I first noticed the problem when travelling at about 60 kmph along the straight bit of road outside my house. At this constant speed the car seemed to lurch forward and backwards slightly. I also notice it when turning corners at low speeds, for example in car parks.
I did a test yesterday when first taking off. I travelled at 20kmph for a reasonable distance and found a speed/ rpm combination that magnified the issue.
I spoke to a mechanic and he said that the throttle body may need cleaning out. I have since done this and it hasn't resolved the issue.
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Under heavy acceleration my car surges. I have already put a new stock diverter valve on and no change....I am thinking n75 is next on my shotgun list?
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I am getting to the point with this car that I can't stand driving it This thing where the transmission downshifts as I slow down and come to a red light is the most obnoxious feeling I've ever experienced in a car. What's worse, is when I go to speed up again and it's in the middle of one of its downshifts and hick up so bad it feels like it's can fall out of the bottom of the car. I'm done trying to deal with Toyota dealerships, all they do is tell me that Toyotas don't have transmission problems and that my car is fine unless it kicks on a light.
I feel like if this transmission was reprogrammed to act more like a normal transmission Like the electronically controlled transmission that was in the 1995 Alexis that I sold a few months ago, or my wife's 2006 solara or the 2008 I asked to 50 I used to have, the car would be fine. But this thing is neurotic, jerky, and unpredictable.
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When I first bought my 2001 f150 a few mos ago there were no problems but I did notice once in a while it would give one little shudder when id accelerate. now all the sudden it shudders after around 20 mph all the way up to whatever the speed limit is. Then it smooths right out until I have to accelerate again. if I punch the gas and kick it down it will clear up but then it feels more like a surging going on.
I had the cruise set at 70 the other day and I had to slow down to merge to around 50 and when I hit resume it really started shaking bad and the service engine soon light flashed on and off for a few minutes then went off and hasn't came back on again. I took it to advance auto and no codes showed up. they said its probably the torque converter but after reading multiple forums I am not so sure now.
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I'm getting some light surging while under acceleration. None at idle or once in overdrive. I cleaned out by exhaust back pressure although it wasn't really that dirty. Thinking about replacing the sensor anyway but it is a little pricy to just buy for no reason. Should I look for anything else? And where I'd the best place to get one? I've seen the 20 amazon ones or over 100 at the parts store.
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I have a V6. When I just want to slowly get going I very slowly depress the pedal and hold, or leave off when speed is reached. Tranny shifts at low rpms, not much acceleration. I have completely avoided kickdowns, which exhibit a bit of a lag. When I really need to get going quickly off the line I steadily press the pedal more quickly than for a slow start. The effect is quite remarkable; tranny holds gears until about 4,000 or 5,000 rpm, and the car really moves. When I need to accelerate and I'm already moving I always shift into sport or I use the TIP.
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Ok I have been trying to find out what is going on with my truck and I cant seem to find anything on here that points to all the symptoms I am having. I have a 05 xlt 4x4 with 5.4. For the last 5 months or so I have been noticing a slip or grinding noise when I go up a hill and it downshifts into I believe 3rd gear. It sounds like going over rumble strips on the road but only lasts a second. It also does it sometimes when I pull out from a stop.Also when I let off gas or brake to a stop it seems to shudder a bit.
Maybe its my imagination since I keep hearing for the grinding sound, I don't know anymore.Its driving me nuts(er). It doesn't do it all the time either.It has only 65,000 miles on it and never towed. I know I am due for a total tranny flush since it never had one. Could this be the whole problem? Iv been reading other stories that sound close to mine but they never mentioned about the noise when pulling out. Could it be the rear end? I am totally lost on this one.Other then that problem it runs great. Shifts nice.
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I've noticed that when I'm coasting to a stop and my speed gets to about 27 MPH, the transmission downshifts (RPMs increase) until I reach about 22 MPH. I'm not applying the brakes at the time.
It's a bit annoying as it sometimes bleeds off just enough speed that I need to accelerate to reach the point I was planning to stop at. Is this normal?
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Why my 2010 auto trans 4cyl Camry often feels like someone is applying the foot brake when I take my foot off the accelerator? Is it the auto trans downshifting? When I feel it occur and slip it into neutral, it releases and I coast freely again. It's really annoying sometimes especially as I've been driving a 1995 Camry auto for the past 15 years which does not do this.
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I have a 2012 Camry with the 4 cyl. engine & auto transmission and get 33 to 35 mpg on trips, runs fine, smoothly and good power. The only downside about the car is that it will downshift one gear an what I consider to be very minor rises, and if a bit steeper will downshift another gear. This occurs when I am using the cruise control, when not using the cruise control I can easily maintain speed without the downshift. I assume that it causes no harm, at least I hope so, but it is very annoying and disconcerting to me. Can this be rectified by recalibration of the cars computer?
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2011 Elantra with phantom harsh shifting problem. Yesterday the Elantra began surging and nearly stalling out on acceleration after about 20-25 minutes driving. I was barely able to drive the car home; when pulling into the garage, there was a strong smell of something hot. Temperature gauge indicated normal engine temp; no icons lit on the dash indicating a problem. Surging/nearly stalling and overheating problem and is it related to other Elantra engine, trans, fuel system-related problems? I can’t find anything specific while web surfing today for some clues!
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I have a 2008 Mitsubishi Endeavor with 308,000 miles on it and am on the return portion of a road trip with 700 miles to go and my car is driving terribly. I had my oil changed today and they used a high mileage oil, said that my filters were fine and I needed to do a tranny and power steering flush which I said I would do once I got home. My service engine soon light has been on and every so often while idling or slowing down my car would putter and act as if it would bail out but never actually die. When I ran the computer it said it was an issue with the o2 sensor but after put a fuel cleaner in the system, it always felt better.
Not today I drove about 900 miles Saturday, did a little bit of in town driving Sunday and it started to putter while idling but what was new was the surging during acceleration and the continual puttering or bumpy ride feeling when I'm at high speeds and 2000 - 3000 rpms. I'm in the middle of nowhere and after talking to Autozone, my mechanics and trying to self diagnosis online, I've been told that I need to indure the bumpy ride to get home but when I do, will need to figure out what with the o2 sensor needs fixing or Ill need new spark plugs or a new fuel pump. all that sounds good but the way my car is puttering feels terrible! there's no odor, leaks or sound ... it just feels like I'm going 80 miles an hour but I'm going to stall out at the same time.
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The truck runs fine and gets the same fuel mileage that it always did and there are no codes...It has the Allison transmission and the Duramax 6.6 and it is a 2005 model C4500 Top Kick capacity 15000lbs. The truck has 254780 miles on it. I can minimize the surging by putting Marvel Mystery Oil in the diesel. Some times it is worst than others ...Sometimes it goes away altogether...Sometimes it will go away if i shift it out of drive at a stoplight.....It happens the worst when I have been at speed for a hundred miles or more or less. Very mysterious...The computer must be sensing a fault and speeding up the idle a hundred rpms .....
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Last winter, I noticed the engine was surging intermittently after start-up, until the engine warmed up. No issues on warmer days, spring/summer, etc.. Recently, the check engine light came on, so I took it into the shop. The shop did not feel the problem was the throttle body, and replaced the mass air flow sensor. The engine is still doing the surging thing after starting up.
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I have a 2005 Ford Freestyle with 59,xxx miles. My wife and I drive it less than 7,000 miles p/year. About six months ago it began to surge (we had already taken it back to the dealer for some work on a recall related to surges while idling). However, the surge that now occurs is not related to the recall--it can happen anytime, even when on the highway while in cruise control at 70 mph. It makes the driveability of the car questionable. We have had it back to the Ford deal repeatedly, only to be told a number of high dollar things that seem to be based on guesses rather than actual data. No codes have come up with computer diagnostics.
We have also taken to independent mechanics, only to be told there is nothing wrong. Only once did a mechanic say that he 'felt' the surging when he test drove the vehicle. But even then, the shop said that they would have to do a tune-up (which raised a red flag with me because tune-ups no longer seem to be the proper term to be used with modern engine maintenance). I did a lot of research and as a result I asked a mechanic to test the fuel pump. The result is that the low pressure was 39.5 lbs, and, the high pressure was also 39.5 lbs.
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