Prius (2004-09) :: Blower Doesn't Always Run At A Constant Speed?
Apr 19, 2011
I normally run my climate control in manual mode, and I notice that my blower doesn't always run at a constant speed. I know that if you use the Auto setting the fan will change speeds, but I didn't think it should do that if you are using a manual setting. Is that right?
I was thinking I would make an appointment with the dealer to check it out. But didn't want to do that if this is normal behaviour.
View 3 Replies
Advertisement
I recently got a 2002 f150 5.4. The fan speed works on 1 & 2, and 4. It does blow on level 3, but it seems to blow at the same cfm as level 2. I'm thinking this can't be right. But, if it was a simple resistor issue, it wouldn't run at all on level 3, right? So, where I should look first.
View 10 Replies
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.
View 11 Replies
So the evaporator in my dads Prius had been leaking for a while so we finally decided to bite the bullet and change it. Everything came apart fine. Changed the evap and expansion valve. Put it pretty much back together except for glove box and a pillar trim pieces. Push power button twice to make sure all the flaps and blower motor works as it should. Well the blower motor doesn't come on. I hear the relay click when you turn the fan on in the mid. No power at the fan though. I checked just to be sure. I've looked all over for loose wires/plugs but have yet to find anything. I started the car up and everything works fine except the blower motor. What it could be?
View 13 Replies
Two weeks ago we were driving across rolling hills in southern Ohio. I started to wonder, "What would be the perfect road for the Gen 3 Prius?" Is there a road shape that would allow the benefits of pulse and glide without the speeding up and slowing down?
Let's assume no net elevation change on an interstate highway and a driving speed of 60 or 65 mph. To stay in the most fuel efficient engine ranges for the ICE, we'd want down-hill stretches where the power demand shown on the hsi would be in the bottom 1/4 of the total Echo range, and up-hill stretches where we could stay in the top 1/4 of the hsi Echo range (just below Power).
Would the optimal ascent and descent angles be the same, or would the angle of decline be shallower that the assent angle? Would mileage (mpg) be better on this ideal up and down road than mileage on a flat road at constant speed?
View 11 Replies
my 2006 GX has 95000 miles and recently i've noticed a slight hesitation followed by a slight surge in speed while driving at a constant speed. it almost feels like i'm pushing the accelerator then releasing it. its a very mild difference but i'm guessing tranny and have 5k left on my warranty. it occurs at a variety of different speeds but most noticeable at about 35-40mph and up around 55mph.
View 6 Replies
Whether in heat or AC mode and any dial position, I'm not getting nearly enough air blowing out of the vents to cool or heat the cabin in a timely manner. The fan switch is working in all positions but I have to use high speed all the time to get enough air to defrost the windshield. I've also noticed that when defrost is selected, air only comes out on the inside part of the vents, not the outside. Is there a cabin filter on this truck, I've checked auto parts stores and they don't list anything for it.
View 2 Replies
Have a 2004 F-250 and blower motor speed 3 is not working..replaced resistor pack with Motorcraft part and everything works except position 3 ....
View 6 Replies
I have a 2010 with about 166k miles. I am getting a slight hesitation at slight acceleration or constant speed. It does not matter if it's on highway or freeway speeds. Now I am not sure if this in junction with me changing the PCV valve, cleaning the EGR pipe, or cleaning the TB for carbon recently. It started happening a week after it though.
View 19 Replies
I recently had the inverter pump replaced under recall. it now makes a the pump noise even when I am driving. I hear it when car is not fully warmed. Back when it had the original inverter pump, it only made noise at startup and shut off.
View 2 Replies
I was sure it was a wheel bearing I'm at 198k miles. I replaced all the wheel bearings in the car and the noise still persists. The old bearings were definitely in need of replacement so I'm fine with that.
Neighbor mentioned my rotors looked warped and they may be vibrating the calipers but the they don't seem to vibrate harder under heavy braking. There's no vibration through the steering wheel.
When I did the front bearings the CV boots are still holding up. I kinda busted some of the dry and cracking boots around the tie rods and ball joints but that's for another day.
Anyways, I run winter tires all year round being in snow belt and they are cheaper. Wear is worse on the front tires outside edges from cornering and I'm gonna replace and go for an alignment soon.
It has to be something that is spinning on the car from the noise I'm getting. Worse at higher speeds, constant variable humming.
View 7 Replies
My 2008 Prius has started making a noticeable soft whirring sound whenever the engine is running. You can hear it both inside and outside of the car. The sound lasts exactly 30 seconds, then pauses for 4 seconds, than repeats . When the car is turned off, the sound can be heard for about another 10 minutes before it shuts off entirely.
View 2 Replies
I started my 05 prius this morning, and it starts up and is running in normal time. But there's a constant long beep tone that doesn't shut off and after it starts it shoves the break pedal back out while my foot is still trying to keep it depressed. There's a brake light that is on after, but no error icon on the display. I didn't try driving it to see if it lets me, because of something possibly wrong with the brakes. What might cause this?
View 4 Replies
Sometimes (but not always!) when I turn my Prius (2008) off and open the driver door, there is a constant beep. There are no interior lights left on. I think whatever I am doing wrong might be draining the 12v battery as it keeps going flat.
View 4 Replies
I have a 91 735i, 4sp auto, 3.5lt. Usually around constant speed of 40-45 the tranny will downshift then up then downshift an sometimes it will downshift to 2nd which scares me thinking it might downshift to 1st an explode the engine or tranny. If I engage cruise control it does not downshift. This does not happen all the time but when it does it can be very severe with jerking and slamming into an out of gear. The trans has a dipstick and the fluid does not look bad. I replaced head gasket and it was doing great for about a month and then poof the downshifting started.
View 1 Replies
I have a 2005 Dodge Caravan with a heater blower that doesn't seem to be working. Whether the heater knob is on low or high, it does nothing, but you can feel a little heat coming out, though. I was told it may be a resistor behind the glove box. I've already checked the fuse, and it seems OK. What do I do?
View 6 Replies
We have a problem with my daughter's 2000 Ford Escort air conditioner. It has cold air but the blower doesn't put out any volume. We had a 1998 and it had the same problem but not this bad. Is this a problem for this car and worse for this year? How to increase the air flow?
View 3 Replies
My fathers truck starts, runs, idles fine but once on the highway at constant speed, the engine misfires or hesitates causing a small buck or jerk but continues on down the road. The SES light is on. He took it to O'Reilly and they put some kind of computer on it and (I think) it said misfire in a cylinder. He replaced one of four O2 sensors, pickup in the distributor (not sure what this is called), wires, and plugs with no cure. This problem is very strange as again, it only does it a constant speed; truck runs fine at idle, acceleration, deceleration, startup, etc. There may be a slight sulfur smell during idle and there is a decrease in gas mileage.
View 14 Replies
This truck has 180km on it and runs fine except as of lately i have developed a surge while at constant speed. When i step on the gas it does not seem to happen.....it only happens when I reach a constant speed. The odd time it will surge at idle and the engine will rev up and down on its own also. When at highway speed it seems to not do this. The truck never dies completely....just surges slightly.
View 9 Replies
I have a 1991 celica gt 5sfe hatchback. I am getting a surging at constant speed, at idle it's fine as well as acceleration. It only does it when trying to maintain a constant speed in the range of 10-50 mph or so. It's feels like I'm pushing the gas and letting off repeatedly. I took it to get an emissions test and it failed on the low side test with high co2 reading, everything else is fine and one place couldn't do the test because the surging kept kicking the computer out since they have to keep it at a constant 15 mph speed. I think whatever is causing the surging is causing me to fail the low side emissions. Could it be the iecu?
View 10 Replies
A few days ago my 98 C1500 started having what I can only imagine is some type of torque converter issue. While driving at a constant speed the RPM will surge by about 500-600. This surge does not coincide with any type of acceleration, it's more like the converter is letting go and the RPM's just rise and fall back down. The fluctuations also seem to stop after about 15 minutes of normal driving. I have had no real noticeable transmission issues. At first i assumed it was my tranny fluid just breaking down so to get me home I used a bottle of Lucas.
The bottle seemed to do the trick for only a couple of days and now the problem is back...no better, no worse. The only difference I have noticed is that before the addition of the Lucas my fluid looked perfect and now it seems there is a bit of varnish. No smell, nothing seems burnt, just a little dirty. I haven't changed the tranny fluid for about 70k and the truck now has roughly 160K on it. My concern is that if I do change it the transmission will crap completely and I'll be on the hook for a rebuild.
View 6 Replies