Prius :: MPG Loss In Very Hot Weather With AC Running?
Apr 24, 2004
What is your general mpg loss in very hot weather with air running? Any tips re air conditioning use?
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Apr 24, 2004
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Prius C :: ICE Running More In Hot Weather Reaching 100 Degrees?
But I've noticed my cars ICE runs a lot more when parked now the temperatures are reaching 100 degrees. I would think with the engine and coolant warm it wouldn't. Even without using the AC, or set at the lowest fan speed with a high temp like 78 deg., and the battery with half or more charge.
View 9 RepliesGolf IV / Jetta IV :: Mk4 Running Choppy And CEL Is Flashing In Cold And Foggy Weather
Just bought my 2004 Jetta GLS from a dealership last week. 2.0 Engine. Has 140K miles on it. 2 hour drive from the dealership to home was cold and foggy but it ran fine. In town stop and go traffic in foggy conditions since last Thursday and it has run fine. Got a downpour this morning and all of a sudden it is running choppy and the CEL is flashing at me.
I have a 96 MK3 as well that would run badly in the rain until I changed out the Electronic Coil. Got so I would carry spares with me.
Is it the same fix for the MK4 2.0? I've also read about using epoxy or JB Weld to coat the coils and keep the water out. Does that work for the MK4 Ignition coil?
Toyota - Sienna :: 2001 XLE Started Running Rough When Weather Turned Cold
I have a 2001 Toyota Sienna xle that started running rough when the weather turned cold. When started, the car idles very high and will not shift properly until it was been running for around 5 minutes. After that it will run well for about 10-15 minutes and then begin to run rough or poorly. The problem is very noticeable at low speeds and when stopped. It never actually kills, but it feels like it is going to. At high speeds it is less noticeable but occasionally you will feel it jerk or chug like the transmission is slipping or a belt or something.
I took it to a mechanic who checked the codes and found that the ignition coils were supposedly bad. I say supposedly because they replace three of the ignition coils and the problem still persists. I then took it back to the mechanic who then told me it was the oxygen sensor. The o2 sensor was replaced and the problem is still there with no noticeable improvement. I again to it back to the mechanic who tells me that they scratching their heads.
I have done some looking around on the internet and have found some discussions that seem to have some promising leeds and actually last weeks car talk show had a caller who described a similar problem. The guys told him it could be a oxygen sensor but they thought a better possibility would be EGR valve or a vacuum leak. Not sure if this sienna has an EGR, but I plan to suggest looking into it to the mechanic. Also, I found some discussions talking about the idle control valve and the engine control module.
Silverado :: Truck Is Running Rough / Loss Of Engine Power?
why my truck is running rough the problem I am having is when you push the gas peddle more than a 1/4 of an inch it shudders and has no get up and go and also if say I'm doing 40 MPH and hit the gas you can hear the engine rev up but I will lose all power and actually lose speed I thought maybe the cats were bad and I changed the plugs for good measure but I can't seem to figure it out also I had the fuel pressure checked and its pulling pressure is great/
View 6 RepliesCamry 2012+ :: 2014 - Running Sluggish As Power Loss?
I have a 2014.5 Camry SE 4CYL 29K . Lately the car has been running so sluggish, it almost seems like it has lost power. Acceleration from stop or while driving seems to be a burden almost like if i was towing a boat. I have 5k since since my last oil change, and have the KNN drop-in air filter, so dirty air filter is not the problem. Not to forget that I always pump 91 octane from chevron. Why this would be?? ( should i have them change the spark plugs?) or could this be due to the transmission?
View 14 RepliesPontiac - Grandam :: 2000 - Running Rough / Loss Of Power After Getting Gas
My wife's 2000 grand am 2.4L engine is acting really funny. this is the first problem we've had with it. i was driving it to pick up my kids from school. on the way i stopped and got some gas from the marathon then drove about 5minutes and it started running really ruff lose of power wouldn't go above 30mph seemed like the transmission took longer to shifter to.
i made it to the school as i was about 2 1/2 blocks away. got my kids check the oil and it was really low so i got 2 quarts as it was a gas station in walking distance. i thought it was a lil better but i started driving it and it had the same results. i got it home about a 10minute trip regularly and parked it.
the next day day it ran then stumbled hard. and every time i tried to start it got the same think was like a lock up. it did crank but when it tried to start it stumbled or locked up. i pulled the plugs had some wet threads oil was on the first on and the threads and around the spark plug b4 i pulled it out.
2 of the other plugs had red stuff on them not on the threads though. here are some pictures also i will show a vid of what its doing. i did a compression test and here are the numbers starting with the first one with oil on threads.
190-194-200-190+ compression test with cold engine.
Also smoked puffed up not sure from where yet..
Ford Ranger / B-Series :: 1994 - Running Hot - Loss Of Power
So I got everything fixed on my 94 ranger so I thought. Now it runs right on the "L" on the idiot gauge on 90 degree plus days running the AC. Also it seems to lose power at times and not even want to do 70. I think new coils, new plugs and wires may work. I also have an intermittent check engine light that pops up on occasion, but clears when you kill the motor and start it back up. I was really starting to like this truck despite it not being my style(I like square body rangers) and it being a 4 cylinder. I like the MPG but am starting to think the 200k engine may be fading
View 14 RepliesGTI 337/20th Anniversary :: Bog Down A Lot / Rough Running - Complete Power Loss On Highway
About three nights ago I had a complete power loss on the highway and the car began to bog down alot under throttle (and surge at points as well although with no boost). It also idled very rough/erratically. When I unplugged the MAF it cleared up right away; Idle was smooth and it ran without hiccup but in safe/limp mode so very tame (again, without boost really, gauge shows it stays in Vacuum and never passes "0" or goes into boost).
I scanned it this evening and got 2 misfire codes and a MAF code, along with a code related to traction control which I noticed had activated as a result of this and could not be turned on (by activated, I mean the light came on, disengaging T/C). These things make me think it is MAF related, especially because I have bolt down Hitachi coil packs so I do not think that is what it could be in relation to the misfire codes (which I think may be old and needed to be cleared).
Fast forward to last night: I can pretty confidently say my MAF is not the problem and I think I saved an unnecessary expenditure. I was able to meet a friend with a 337 as well and his MAF did not change my car at all and my MAF ran fine in his car so I think my problems are something else. Although with the MAF plugged in my car runs very poor and unplugged it clears up and just runs "limp" (no boost and slow but stable) from what I tested this evening the MAF unit seems to not be the issue.
I think there must be a vacuum leak of some sort between the MAF and the engine which allows more air in than the MAF signals when plugged in which causes the issue. Also, I know a common thing to think is "coilpacks" but I have bolt down Hitachi coil packs so I would imagine that would eliminate those from being the failure they tend to normally be. Agreed ??
Ford - Fiesta :: Stuttering / Loss Of Power Now Won't Stay Running When Engine Is Cold
I have a ford fiesta that first of all started off stuttering/loss of power and now wont stay running when the engine is cold ...... 1.4 54 plate ....
View 4 RepliesNissan - Maxima :: 2000 - CEL Code P1320 / Running Rough And Loss Of Power
My Nissan Maxima GLE 2000 is showing CEL with code of P1320 ONLY, and the car is running rough/or loss of power. The shop that checked for the code advised that it could be something related to Ignition, and also provided me with the system generated list of reasons for the code. Before I decide to do anything, I wanted to check what option I have to address this in a most cost effective manner:
1) Is there a quick way to check which coil would have gone bad ?
2) Is it advisable to change 1 LH and 1RH at a time, and see if it fixes the problem ?
3) Could it be cam shaft sensor that could have gone bad ? Are there any symptoms of cam shaft sensor failure to isolate it to one way or the other ?
Ford Super Duty (1999-2016) :: F250 Running Hot While Towing Travel Trailer - Coolant Loss
My 99 f250 ran hot while towing my travel trailer when the fan clutch gave up. ever since iv been noticing coolant loss and pressure in the day tank.ive changed the water pump,radiator. day tank and cap plus the thermostat.
View 9 RepliesFord Super Duty (1999-2016) :: 2002 V10 Won't Stay Running / Loss Of Power And Slight Miss
This last April I was towing my trailer back from camping approx 125 miles when I detected a loss of power and a slight miss. I managed to make it home. It wasn't until I made it home that the engine finally started coding. Miss on start, a couple of cylinders missing and output shaft speed sensor circuit failure. So naturally, I decided to do what I felt needed done anyways, change all coils and plugs. Oddly the problem got worse to the point where I almost didn't make it home after test driving it, it kept stalling out and was difficult to keep running.
After some research and advice from others, I started replacing some components; MAF sensor,IAC valve, output shaft speed sensor. Nothing. In fact now the truck wont move, I start it up it idles a little rough, but then I put it into gear and with in seconds she shuts her self down. I've replaced the fuel filter, checked the fuel pressure and it is in specs. I've now had it towed to two mechanics neither of which have any solution. They've put expensive computers up to it and still nothing. I really do not know what to do at this point. Lastly the only code that continues to come up is P0720, output shaft speed sensor circuit failure, I really miss my truck!
Prius (Gen 1) :: Do Hot Weather Impacts On CEL?
I have a super sensitive CEL light. It has lit up a few times in the past year.Do Check engine light relate to super hot weather?
View 3 RepliesFord 7.3L Power Stroke (1999-2003) :: Loss Of Power / Rough Running
I have a 2001 ford 7.3l powerstroke diesel. When I first noticed the problem I was towing a trailer going up a grade and got into the throttle almost to the floor and noticed a loss of power and the service engine soon light flashing extremely rapidly a few times and never came back on. I made it home, still lacking power but not running rough. I drove the truck to work the next day and the truck was running rougher and loosing power. It ran great through lower RPM's but seemed to trip as soon as you gave it over half throttle. eventually the truck wouldn't run right at all and lacked complete power. It idled rough as well. My mechanic threw the computer on it and it said injector pressure reading too high or too low.
I was told to replace the IPR on the HPOP and I did. (I also replaced the fuel filter and changed the oil). After replacing the IPR it ran great, had full power! then it began to slowly die like it did before until it sounded like it was running off 4 cylinders again. I pulled the ipr out, cleaned it and changed the oil again. It seemed to clear it up for an hour and ran great but then began ran rough again. I also replaced the CPS sensor. I feel like its not getting enough fuel or something, im just wondering if it could be the ICP or the lift pump. There is no check engine light at all. Its just got me stumped because cleaning the IPR clears everything up.... temporarily.
Prius C Fuel :: MPG Going Better In Warm Weather
I have noticed that due to warmer weather and more Prius C owners that the MPG's are going up. No many in the 40's mpg anymore. I enjoy people posting and obtaining over the EPA of 50 mpg, the 60 mpg figure appears to be fairly easy
to obtain with the Prius C.
On our Prius the last mpg was 52.3 calculated this is real world driving with my wife driving 75% of the time and she does not drive strictly for MPG's.
I believe we should all take a minute and pat ourselves on the back as all the countless gallons of gas we our saving and will be saving for our friends and neighbors who have no choice but perhaps to drive large cars and pickup trucks...
Prius (Gen 3) Fuel :: MPGs Going Up In Warm Weather
Here in the northwest the weather has been dry and temps in the 40's to over 60 degrees. The mpg's have increased about 5-7 mpg over just a month ago.
View 5 RepliesPrius (Gen 3) :: Engine Revving Up In Cold Weather
I was heading home last night from work and noticed something odd. It was the first pretty cold night that we have had around 20-25 deg. and I took off from the parking lot like normal.
When I got to the first stop light about a mile down the road I heard what sounded like the engine revving up right when I took my foot off the gas pedal. It did this as I coasted to the stop light. It also did it again at the next stop light just up the street. I thought maybe it was the heater blower, but It really sounded and felt like the engine revving. The car did not accelerate or anything, is this part of the warm up or normal? I also have the lower grill blocked but I don't see how that would make any difference.
Prius (2004-09) :: Car Is Not Keeping The Battery At 60% SOC In Hot Weather
So, I noticed after the week long heatwave (using Priidash and the Prius display) that during normal driving (under 65mph and slow accel) that my prius is NOT keeping the battery at 60% SOC....It is staying in the low 50's or as low as 39.5%....If I go above 70mph, I see the battery being drained and not recharged at all....I reset the battery (twice) the first time it made no difference but the second time the car turned on and said I had 60% SOC when in reality before the ECU reset I was at 49.5%. I know my battery is good because I have stress tested it many times. Its in great shape. The only thing I've done differently these past few weeks is I left the car in Park with the AC on 75 auto for about 5hrs on 4 different days....Its a 2004 Prius.
View 7 RepliesPrius (2010-12) Fuel :: MPG Fluctuates With Weather
Well, for the past few weeks the weather in Los Angeles had been a little on the cool side. I didn't notice the cooler weather, but I noticed that the computer says I was getting around 51 MPG for almost the entire tank (the warning was blinking so I think I used about 10 gallons).
Then today, the temperature rose to around 90 degrees. I noticed the heat. All of a sudden, my computer MPG rose to slightly above 52. I think that would be difficult to do as it must average out the entire tank an extra 1 MPG. And correct me if I'm wrong, but if I got 51 MPG over 10 gallons of gas, in order to raise the gas mileage by 1 MPG in the next gallon, I must get around 62 MPG for that last gallon.
Prius C :: How Best To Warm It Up In Winter / Freezing Weather
Winters get COLD up here, easily -20F at night.
All my life, I've always went running outside, start the car up, get the heat blasting, run back inside. By the time I walk out to actually leave 10-15 minutes later, it's warm (or at least tolerable) inside the car, and the windows are defrosted.