Santa FE SM (2001-06) :: Gas Mileage Decrease - Lost Around 4 MPG In City Driving
Feb 1, 2012
My 03 2.7 has suddenly lost around 4 MPG in city driving. Haven't taken it out on the highway to know where that is at. Used to get around 20/21 and now I'm around 16/17. Mileage is at 97k now and has new spark plugs and brakes done recently. I know the brakes are not dragging. All the fluids are fairly new and the car drives the same as before, I can't feel a difference in performance. Just lower gas mileage. I haven't changed out the T-stat yet, but the temp gauge in car reads the same as always. I checked the car with a code checker and there are no pending codes. I know this is the age where the oxygen sensors could start to go bad and have never replaced them.
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Just like the title says, getting crappy mileage. all my driving is city driving and on weekends i go on the highway for about 3 miles to get to work, i4 2013 camry getting 19.8 mpg, does that sound right for just city driving? Car has 6643 miles on it bought it in May 27th.
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I'm at 9600 miles now and i noticed my gas mileage started going up---the last two fill ups with the same daily route:
23.9 mpg! in mixed highway and city driving! average speed 25-35mph for a typical trip!
Now, granted I've been driving gently...but that brought me to another exiting tid bit:
If I don't want to drive spiritedly (because I'm on the phone--hands free of course---or because I'm thinking about work)....this car is so smooth and comfortable....
I had a dodge charger before and that boat wasn't as comfortable nor as agile---by a ton! And then today....it's raining in fort worth....but that's no problem...no spinning tires at lights....amazingly better traction with AWD compared with my 1.8t!
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Driving along, suddenly lost gears, engine revved a slight bit then lost power and stalled, the engine turns over but will not start but when it turns its in a lower key sound, the timing belt is in place but has recently been changed, would you think it has slipped? Seems a total lack of combustion in the top of the engine, would a slipped timing belt cause this?
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2001 Santa Fe with 2.4 engine auto FWD 198k miles. When it is started first in the day, the engine sounds good and shifts well. After a few minutes and also after stops, first gear works well but then the following gears do not work well almost as if the engine and the transmission quit talking to each other. Traveling at 60 mph starting up a medium hill, the car downshifted and could not pick a gear. Although I pushed the pedal harder, the car did not respond rather continued to slow down. It acts like I lose 2 of the 4 cylinders in all cases. I replaced the spark plugs and two of them had oil on top of the plugs and also all around the threads. I replaced both coils thinking that one of them was the issue but no change has been observed. I replaced the throttle position sensor; no performance change. I do not believe it is the transmission as I have not notice any clunking, or bad shifting when starting out. While coasting at 40 mph in neutral and my pedal pressed at a certain position, the rpm gauge fluctuated from 3k to 3.6k many times for the duration of 20 seconds.
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Recently returned from trip from Austin Tx to Monroe LA. Gas mileage decreased from about 43.3 MPG to 38.5 MPG. A little annoyed by this but I guess I can attribute this to the increased weight in the vehicle. Still taking care in for other thing. Maintenance needed light came on & I assume it may be for a 15,000 mi checkup since it is nearing that mark.
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I'm so fed up with this Prius C. I did nothing but city driving and I got 302 for a tank at 8.247. It's going to the dealership to see if something is wrong. I haven't got over 369 on a tank before and that was highway driving.
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I have a 2004 volkswagen jetta wagon, 2.0l bev engine, 5 spd. I just recently replaced both oxygen sensors due to codes that popped up, but have noticed recently the gas mileage and performance have decreased. Now I get the code 16804 - Catalyst System; Bank 1: Efficiency Below Threshold P0420. The car passed smogged and all the readiness codes passed. One major noticeable different, is when I apply the gas, it is not accerlating like it should.
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I don't have a lot of data yet, but the last couple of times we had temps over 80F, my mileage took a significant hit - about as bad as when temps are below 20F (more than 10%)... Shutting off the A/C doesn't change things much...
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The stock 265/75/16 tires need to be replaced and I was considering swapping 285's on the stock wheels. Will I notice an increase in fuel consumption? I realize that calculating mpg will need to be adjusted due to larger tires since the speedometer will be slightly off.
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I bought a 2012 Prius new and averaged just under 53 miles per gallon for the first 15,000 miles regularly. I have a long commute so my driving mix of city/highway is pretty consistent. When starting the car one morning there was a fairly loud series of clicking sounds from the engine compartment, which then stopped. From that point forward the mileage has dropped to just under 50 mpg. Same driving habits. I am bringing the car if for it's 20,000 mile check up shortly. Any ideas if something happened to the battery I should ask about? It is still under warranty.
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I had a check engine light on my 2005 Ford Taurus and my mechanic suggested cleaning the mass air flow. Afterwards, the light was off and the car seemed to drive fine ( it was driving fine even with the check engine light on) But my mileage dropped drastically. On the freeway it went all the way down to 10mpg! Right now around town it is fluctuating a bit, but around 14mpg. Should I have the mechanic check for a loose wire or something not connected properly? Or just replace the darn mass air flow?
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My 03 (129k miles, 2.7 AWD) is up to date on all maint (this summer saw new timing belt etc., transmission service) and oil is current. Spark plugs are due at 131k. Air filter is new, tire pressure maintained at 30-32psi.
MPG has consistently been ~20, slightly more on trips. October 27 to November 26 was 19.8 mpg. Putting on brand new snows (General Altimax Arctic) knocked it down to 17.5 mpg for the next ~250 miles. However, since early December it's dropped again to 13 mpg!
Mechanic just checked for brake drag (none - rotating one wheel turns all 3 others easily); no pulling, rolls well in Neutral. No engine symptoms (missing, bucking) or CEL lights. Power seems a little diminished (for instance, it takes longer to shift during acceleration sequence).
I will add my Lucas Oil gas treatment just in case it may be injectors. My mechanic says he has seen MPG suffer from certain gas brands (and I do wonder if the tank fillup after which the MPG dropped had something to do with it).
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Check engine light came on and stayed on today. Engine lost almost all power so I guess I was in "limp home mode". CEL ODB-II code was P2138 according to AutoZone.
Accelerator position sensor malfunction
Probable causes:
1. Open or short circuit condition
2. Poor electrical connection
3. Failed APS.
After turning off the vehicle, it seems fine at least in town but the check engine light is still on. This is the first "problem" with the vehicle and it's at about 98K.
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My 2001 Santa Fe 2,4l - Have suddenly lost the abillity to shift gear. Its stuck in 2 and the shift stick is very loose in the "front to back and back to front" motion.. in other words there are resistance sideways.
I suspect it to be a broken shift cable. So my question is : changing shift cable on a santa fe easy? Is the best approach to start from inside the vehicle or from transmission side?
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My '03 Elantra has started making a screeching sound when I drive it. At first, I thought it was due to the cold weather, but it has occurred even on warmer days. It makes the noise intermittently, sometimes not at all. Sometimes when I turn sharply or back up, or when I just drive it. What is odd is that I had the belt changed last spring, and I inspected it and it does not seem ripped or stressed at all.
Not sure if this is related, but I noticed that my gas mileage has been greatly reduced. Last week I filled up a full tank and drove about 6 miles. When I filled up, the needle was above F. Later when I got home, the needle was just a few ticks below full. Within two days, I was at half, only driving a combined total of about 16 or so miles, city driving. This car has always had great gas mileage, even with snow tires. My mileage is 56,815, and I've checked for gas leaks and found none. My RPM's don't rise, my engine does not overheat, though I did find some weird oil on the black hood on the engine last week when I checked the belt. I checked the oil levels and they were good.
I'm taking this in tomorrow, and am scared that this is the end of this car. What may be the cause of the screeching and loss of fuel efficiency?
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I have 62,500 on my 08 Santa Fe... never had any engine problems, but today, started the vehicle, drove 1/2 mile in town at 25 mph, turned a corner and the vehicle shuttered and lost driving power. At the same time, the check engine light came on and flashed continuously. I drove 1/2 block (around two corners in town) with the on/off studder and loss of power. I pumped the accelerator just to keep it from killing. As I stopped at the next corner and idled the vehicle regained power. I pulled over and called the dealership service department and they recommended I drive it home (blocks away) and turn the engine off, then try to restart it and if it started drive it 30 miles to dealership.
Did that, engine light came on steady and vehicle had full power. Long and short... the code was P0300 Random CYL Miss Fire Fault (random cylinder miss fire). After scanning the vehicle, test driving it and inspecting it as they do, they could not find a source of the problem or duplicate it. They cleared the code and promised that if it happened again they would credit me the $90 diagnostic fee I paid today for them to find nothing and apply it to a problem they couldn't find. They were willing to try and warranty it even though it is 2,500 over warranty if it had needed parts. Has this cylinder misfire happened to any of you? I've never had a problem like this really go away, so I'm expecting it will show up again. Also, they want to replace the timing belt (at 60K) as a preventative measure. What do you think? Can I wait till 80K?
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I'm trying to troubleshoot an odd issue.
When the lever is in low beam mode I have no headlights or fog lights. (parking lights fine.)
When the lever is forward in high beam mode I have no headlights or fog lights. (parking lights fine.)
But if I hold the lever back in "fash the high beam" mode the high beams turn on. This got me home last night, but I don't know where to start looking for the issue?
Faulty relay? Faulty switch? Something else?
(2004 Santa Fe)
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I purchased my 2001 Nissan Sentra about 4 weeks ago and the check engine light came on about a week into owning it. I scheduled an appointment to get it checked, but continued to drive it without issue until one day I started it and as soon as I began driving it lost power. The more gas I gave it, the worse it got. It just wouldn't let me go anywhere. So I parked the car and let it sit for about an hour. Then when I went back to show someone else the problem, the car started and drove again like nothing was wrong. Since then, this has been happening frequently. I will start the car, it will spit and sputter and lose power, I will turn the car off and wait a while, it will start up again no problem.
My local mechanic told me the computer was throwing a bunch of different codes, including the one for the catalytic converters. They also told me that since the problem seems electrical (the car seems to reset itself when I turn it off) it could be that the computer is going and that’s what needs to be replaced. I've taken the car back to the dealership where I bought it, they replaced the oxygen sensors, thinking that would fix the problem. I just got the car back yesterday and drove it for about 60 miles without any problems, then that check engine light came back on and the same old problem is back. My question is, how do I know if the problem is mechanical or electrical? What if I replace the catalytic converters when it’s actually the computer that was the problem all along or vice versa?
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My Santa Fe is doing a pop sound, like a clunk, when I increase or decrease the speed. It is just one time noise every time the speed changes. Like when the "gravity center" changes from the car front to rear or vice-versa.
I notice already that doesn't happen when it's shifting, neither when I go over a speed bump.
It happens in all gears, but is more noticeable up to the 4th gear.
Also, usually I can hear this noise, a little bit lower, when I'm stopped and change the gear from P to R or vice-versa.
My Santa Fe is a 2011 model with 70K kilometres ....
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I have a 2007 Titan that just turned 100,000 miles. Over the last 6 weeks or so I've noticed a huge drop in gas mileage. Used to get close to 400 miles a tank and now as of last night I got 248 miles on a tank. Average of 10 miles a gallon. Nothing has changed as far as driving habits or anything like that.
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