Prius (Gen 3) :: When Car Speed Slows To About 38 To 37 Mph Engine Will Shut Down
Sep 19, 2010
For those of you that own both a TCH and a 2010 Prius I have a question for you. My commute is only 6-7 miles to work and currently I am getting approximate 45mpg displayed on the mfd. I think I read somewhere that the display calculations may be a little high but all in all I am very happy with my mpg. I am considering trading my 09 TCH for a 2011 or possibly 2010 Prius if the price is right. Anyway If I accelerate my 09 TCH to approximately 41 mph and take my foot off the accelerator, when the car speed slows to about 38 to 37 mph the engine will shut down. I can now lightly push the accelerator to drive along just using the battery. If on a flat road or a slight down hill grade I can even pick up speed and get to about 41 mph before the engine starts back up. My question is how does the Prius work the same way? What are the speeds for the Prius?
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I have a 2006 Prius and lately, the fan will stop blowing hard on long drives on hot days when the fan is set to High. This happened on a 3 hour trip on the interstate and again when I was driving some back road for about 2 hours. The first time, I noticed the cabin temp was getting hotter so I went to switch the fan speed higher and noticed it was already on high. It was not set to Auto.
When I got home, I let the car cool down for about 30 minutes and when I turned on the car, the AC was blowing full speed and was getting cold like normal. When the fan speed slowed down on its own on the interstate, it was probably blowing at a speed similar to what the fan would normally blow if set to the middle position or maybe even below that. Why the fan would slow down on its own when set on high.
I also just checked the temperature coming from the vent after running the AC on LO temp for about 10 minutes. It was reading 50 degrees with a digital meat thermometer and 46 degrees with an infrared thermometer. So, when the car is cool, the AC seems to be working fine. Just wondering about the fan speed and the fact that the car gets really warm when it slows down on its own.
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96 Ford Explorer, 78,000 miles After about an hour on the highway (60 mph), the vehicle slows and cannot increase in speed. It does this until it slows to less that 20 mph. Pushing on the accelerator increases the rpm, but does not result in an increase in speed. It only does this after an hour or more on the highway (city driving does not cause the problem). No one can diagnose the problem; already took the vehicle to the dealership and a transmission specialist (both said nothing was wrong). Hoping very much to keep this vehicle.
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I just purchased a 2001 Dodge Durango 4wd with 140,xxx miles on it. My issue is that whenever I accelerate it hesistates and if I am going at a high speed like on the interstate or expressway it sometimes slows down (drastically) if I'm going uphill. What can be causing this?
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My wife's 2010 Prius IV died on the highway at 65 mph; just shut down at speed and would not restart. She had it towed to the dealer and there it's been now for 5 weeks! The tow truck operator was able to drive up on the flat bed using EV, but no engine. Dealer says it's the inverter which has a nationwide backorder and no ETA.
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I have a 2011 Toyota tacoma with 35k miles. Yesterday while driving at about 70-75mph on the freeway with no warning the vehicle shut down and the engine light came on. It made a clunk about the the time it shut off, it wasn't very loud but I could feel it. I'n not sure if that noise was just the vehicle powering down or transmission kicking from the change in torque? I pulled off the freeway, there were no fluids leaking, serpentine belt was in place. The truck will turn over but not start. The check engine light flashes rapidly.
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I have 1995 Dodge Neon (automatic). Lately, after long trips and on the highway the "check engine" light will come on. Then, the car seems to struggle shifting. I will be cruising along at like 68 MPH, then ease my foot off the gas to slow down, and the engine/car awkwardly jerks 2-3 times as it slows down. Trying to stay in the 60-70 MPH range is hard because is keeps hesitating and jerking as my speed changes, not HEAVILY but enough to make driving unpleasant. My cruise control stopped working about a year ago, I have not had it looked at yet, but I thought I should mention it. When I let the car rest overnight, the light goes off, and there is not problem until I go on a long trip again (around 200 miles.) This only happens at higher speeds, around town there is not a problem.
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Only have driven 2900 miles and engine frequently misses when it slows from 40 mph down to 35 mph. After a test drive dealer told me that car is handling normally. Can't be true. I consistently get a "lagging" feeling whenever I slow down from 40 plus mph to 35. My foot remains on the accelerator with just a slight decrease in foot pressure. I'm returning to dealer next week and I don't know what I will do if they tell me the vehicle is acting normal.
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I have a 2007 Honda Accord, automatic transmission. Engine light of the car turns on while i am driving the car. When the light is on the car slows down and it does not give me the same speed when I press on the gas as if the gear is not shifting. When I stop the can and turn the ignition off and turn it again, the light disappears and he car runs fine. However, this may repeat itself after driving for a few mile and sometimes disappears for days.
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96 Ranger x cab 4.0 ltr automatic... Starts fine, runs fine until I stop.
When I stop, the engine idles oddly - it slows and speeds back up, tachometer and the battery gauges both lower just a bit and immediately return to normal. When the headlights are on, they dim in rhythm when the gauges dip. It does not do this in park or neutral.
Sometimes it does it right away. Sometimes it doesn't do this at all. Of course it did not do this when I took it to the shop. The battery is nearly new. Cables are fine. Alternator checked out ok.
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I started noticing some strange sounds coming from the engine compartment after shutting off the car ( a 2007 with 90K miles). It's different from the hum for several seconds that I often hear after switching off the car. This one is a squeaky rough sound like a small motor wearing out. I think it's from the driver side of the engine compartment. Is that where the inverter pump is? This car didn't have any record of needing the inverter pump changed for the recall as far as I could tell.
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I did an earlier post that the engine in our 2006 would make a gurgling sound for up to a minute after the engine was shut off. I received some replies, mostly saying that this noise was normal.
Well, the other day I decided to check the fluid level in the radiator's reservoir & it was low so I filled it and ---- the gurgling noise has stopped.
Could this gurgling just be a warning that the radiator's fluid is a bit low? So far, this filling has worked for us !! I'd bet that this is rarely checked by any dealer during an oil change?
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If I put the Prius in park while I get out and mail a letter, engine temp is 190, I can get back in and drive off on electric, zero rpm's. However, if I push the start/stop button, mail the letter, and restart the engine (temp is still 190), I cannot get the engine to spool down. It keeps running for a few minutes.
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Title sums up the whole post. My Prius tends to use a bit of oil, I don't know the exact numbers just that it can't go without a couple top-offs between 10k oil changes. As much as I love this car it's because of that fact it will be sold after it's paid off as I've never seen a car that uses oil and yet drips none onto the ground.
Anyways it's because of its oil consumption and me not being used to having a car that needs its hood opened between oil changes that I've worried and wondered if I forgot to check it and it gets low enough to make the oil pressure drop will the hybrid system turn the engine off assuming I'm going slow enough for it to do so? I understand if I'm going over ~40mph the engine has to be spinning to prevent MG1 from over-revving.
So lets say I'm doing 65 on the interstate and the triangle lights up then I slow down and come to a stop will it prevent the engine from turning back on, or I'm sitting at a light and the engine is running because the heater is on then the oil pressure drops will it prioritize protecting the engine over the heater? Or is it like a typical car it will warn me but it's up to me to stop the car and turn the engine off as fast as I can to lessen the damage that is being done?
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I have a Prius PIP. When warmed up after driving several miles, the engine does not shut off when stopped . This happens in the ECO mode. Any solutions?
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How can you tell if the EBH is working? I thing there is a little bit more heat coming from the vents, but its hard to tell. I am thinking of putting the car on ramps and touching the block next to where the EBH is. The gas engine doesn't seem to be shutting off any faster.
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My Gen 2 2006 Prius engine works continuously and does not shut down even when car is stopped and parked. It shuts down after pressing power button. Problem started after I changed oxygen sensor and then car was reset by computer, could these actions cause the problem? What kind of problem is that and how to fix it...
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My sister has a 2007 Prius that continues to have electrical problems. The latest is the console will go dark and the engine will not shut down. The dealership is stumped.
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My Prius engine wouldn't shut off when the button was pushed. The Toyota dealer was clueless.
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So the gas engine shut off (I filled up the tank yesterday) when I was on the highway and the engine light came on, the triangle ! light came on and the hybrid system light came on on the GPS screen. I pulled over and turned it off, check the oil, which was a little low, but there is some in there and eventually the gas engine started up again, but it didn't sound very healthy. I need to get to work tomorrow morning...it's at the mechanics and I trust him, but if it's something stupid and silly, maybe I can just do it myself and not get charged for any diagnostics.
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I've noticed the last few days that my Prius seems to be dropping MPGs horridly (even worse than the typical winter drop). The engine will idle hard and loud when stopped sometimes or when braking even. I noticed this morning, when I am braking to a stop, the MPGs are registering at 75 or below and it's running when idling and it seems to be running the gas engine more. It will sometimes shut off at a stop light, but hardly at all the last few days regardless of if it's been running 5 minutes or over an hour.
I thought maybe it was because it's cold-- we've dipped to single digits, but have been above 30 or so the last week or two and has only happened in the past two or three days. It happens at start up and at the end of my hour long commute to work. I've turned off the defrost and heat and it still does this.
She's a 2005 and has just over 105,000 miles. I just had her oil changed, a fuel injection cleaning and spark plugs replaced two days ago and had the inverter serviced and recommended transmission work done at 100,000 miles. Her water pump was replaced in the last year with the recall. I just replaced the air filter. There are no warning lights, so I"m not sure if anything would show up with the codes. I'm worried because it did not do this previously, and started to as soon as I got the car back from the injector cleanings and plug work...
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