Chevrolet - Express1500 :: Bad Mileage And Gas Smell
Dec 14, 2011
My van is using way too much gas. I can smell gas at tail pipe and can feel the express pressure when it explodes in exhaust pipe. I changed plugs, wires, distributor cap and rotor and still exactly the same thing. It also floods out easy if I don't keep my foot on gas pedal at a stop.I been told by people that it could be one or more sensor but is there a way to tell if one is bad or what. What sensor(s) I should look at where they are located.
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I'm having an issue that I think can be resolved. There are no leaks...no smells...I get roughly 12 MPG.. I drive like an old lady YET gas evaporates like boiling water in my car.
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I just bought a mkIV jetta one week ago and I'm noticing pretty bad gas mileage and a prominent exterior gas smell. I don't know any vehicle history. Has 140k miles. Power seems to be completely fine through all rpms and gears.
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I have a 2009 Chevy Impala. It has 28,000 miles and since November my gas mileage averages between 20-24. I took the car to the dealership and they say nothing is wrong. This car was titled in Hawaii. I live in Wisconsin. Could the colder weather have something to do with the mileage or what else could it be?
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I have a 2004 Chevrolet Tahoe 2WD with the 5.3L V8. Tahoe has 134K. At about 125K miles, I replaced air filter with a K&N, new OEM spark plugs and spark plug wires. The Tahoe has been running great and was getting normal mpg until recently. 15mpg in town and 17mpg on the road is what I normally get. The last 3 fill ups my mpg has been below 13.5mpg. Car still runs great but at 13mpg it's starting to hurt a little financially. Weather here in NC has been normal, my driving conditions or habits have not changed, etc. What could be causing my mpg to drop by so much while the suv still rides smooth and straight?
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My air conditioner gives off a bad smell; my son, who lives distant and is a mechanic, told me that if the drain gets plugged that will cause a moldy (or other) buildup. When he visited, he said he could not locate the drain hose. Where can I find out where the drain hose is? Then I could probably unplug it myself. It is a 2007 HHR SW.
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I have a 2004 Chevrolet Malibu Classic with 173k miles on it. Car runs great. AC works intermittently sometimes, but it's not a huge issue. It kind of stops if your in city traffic, but at highway speeds, AC is dependable. Particularly when running AC (or it may just be because it's the end of summer), I notice a smell on my clothes. It's not necessarily like standing beside the exhaust pipe, but after driving for a while with AC, I notice it. I also sneeze some when this happens.
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Will a 2011 Chevy Cruze 1.4L turbo engine wear out / break down / fail sooner than a 2011 Chevy Cruze 1.8L engine ( w/o the turbo ) ? Both being automatic transmissions. Driven by the same person. What is the gas mileage difference between the same two ?
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My 04 Chevy Venture has started smelling of gas when I drive. It doesn’t happen all the time. I can drive to a destination and smell nothing, park, and a few moments later leave and smell the gas. I have had the fuel lines checked and was told there are no leaks. The smell is stronger when I have the vents pointed at me, but if I switch to the floor vents, it diminishes.
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I suspect there are very stinky mushrooms growing in the debris inside the ventilation system. We live in Florida and the van sits outside in an area in our yard where stinky mushrooms grow at certain times of the year. I have tried spraying Lysol in the outside vent with the fan on full. That seems to have worked over time but can I dump some vinegar in there without harming anything?
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I've had my XB 5-speed for nearly a year and 10000 miles. It as been dead on reliable and fun to drive. My gas mileage has varied from 26 to 31 in mixed driving and from 32 to 35 on the highway. I use premium fuel only because I can get it without ethanol. My fuel mileage also increased a couple of mpg due to getting the power robbing ethanol out. True it is probably not enough to offset the extra expense but I like not having the stuff in my car. My only dissatisfactions has been with the transmission gear ratios. They are way to low. This torquy engine could easily do with a ratio that would drop about 500 rpm for more relaxed highway cruising.
As it is, though, my XB will go up any hill or long grade without breathing hard! Another is the instrumentation. I don't mind the center mounted set-up but speedometer and trip meter for mpg ratings are both inaccurate. My speedo reads about 2.5 mph high and the fuel mileage read out has about the same error, also on the high side. I have the stock 16" tires. The clutch has a narrow engagement band and can be difficult to be smooth on. The car is fairly quiet, is comfortable and this years hot, humid summer has shown it has one of the best air conditioners I have ever experienced in a car. I thought it might be an electric unit rather than a belt driven compressor because there is absolutely no perceived drag when the compressor kicks on.
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I have a 2006 Chevy Cobalt... I can smell gasoline ONLY when I turn the heater or a/c on. I have taken the car to TWO different auto shops and no one knows WHAT is causing this. The check engine light came on recently after a radiator flush and the first auto shop said it was a thermostat switch and bring it back the next day. I was leery of this and went to the second auto shop who told me they never heard of a thermostat switch and to bring it back whenever the check engine light comes on again. Meantime, I will not turn on the heat or air because the gas smell gives me a headache. What this could be?
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I have a Chevy Prizm 1998 and I drive about 250 miles a week. Recently I started going through a quart of oil in 2 weeks. My engine sounds good. I am religious about changing my oil and filter every 3,000 miles and I check my oil every time I fill up my gas tank. There is no blue smoke and no oil spots on the garage. Could it possibly be a small leak that only occurs while I am driving or a am I dreaming?
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There is an odor when it idles both in and out of the car but only after some driving - if I sit there a while the smell goes away. It is most noticeable when I get off the highway on my way to work and sit at a stop light. If i have to sit and wait for someone, the smell dissipates. I cannot find a leak. There is a performance issue but I'm not sure if it's related. At highway speeds it is having trouble accelerating - if I'm at 55 and want to go to 65, it'll go but it feels like there's resistance, almost a pulling, it causes the car to rock back and forth a bit - again it only happens at higher speeds. It has 140000 and is in good shape (except for things mentioned). The last repair was a water pump replacement about 4 months ago.
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My 2005 chevy silverado 1/2 ton seems to be low a quart of coolant every 2-3 months. First alerted to this during a oil change, check it monthly and need to add a little to the reservoir every other month. The temp gauge never goes over half way. I do smell antifreeze after I shut the truck down after a significant drive, but only if I walk to the front of the vehicle.
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Replaced Fuel Pressure Regulator but still notice smell of gas and sometimes at start up rough idle.
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I purchased a 2011 Chevrolet Impala last year with 14,000. When the car reach 26,000 I begin to smell a very strong sulfur smell coming from the exhaust. I took the car to the local Chevrolet dealer and was told that the particles in the catalytic converter begin to break up at about 26,000 mile and the result is a sulfur smell.
I didn't believe that all Impalas had this problem. So I took it to the Chevrolet dealer in the next town where I personally know and trust the maintenance chief. He put his two best men on the car and could not find anything wrong. I was told to try another gas station which I did but it did not work. I now have 31,000 miles on the car and the smell is very strong coming into the passenger compartment when stopped.
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Just like the title states, there is an intense burning smell (like plastic or electronic) inside my 2007 chevrolet equinox. I first noticed it this morning; last night there was no smell. The smell is most intense on the driver's side under the steering column. I checked the fuses and none of them are blown and everything seems to be working on the interior of the car. I am having electrical issues with the back windshield wiper not working and the passenger airbag seat indicator not working, but both of those issues have been going on for a while now. The only other issue I know of is that sometimes (but not every time) my key won't come out of the ignition when I turn the egine off. To get it out, I push the little release button on the interior of the steering column. I have been doing this for about a year now, but I wouldn't think that that would have anything to do with a burning smell....
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Recently I've been noticing a gas smell after parking my car after the drive home from work, but engine performance and mileage efficiency didn't seem affected, and I found no visible evidence of leaking on the ground (nor in the engine, but I likely don't know the right places to look).
Today, with the engine running, I looked around the engine to see if I could locate any gas leakage -- I located the fuel pressure regulator (I think; a golf-ball sized acorn on the right of the engine with a hose coming in the top and a pipe coming out the bottom and going down and to the left) and didn't see any leaking during my brief test. I'll check it again after my drive home tonight.
One new thing I did discover, though; while in park, when I slowly pressed on the accelerator, there would be a point where the engine started losing power and going into a rev/slowdown cycle: about a second or two of revving, then a half second of slowing down. This was while cold and in park; I've not experienced this in normal driving.
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A full tank for me runs about 450 miles ... 80% highway and 20% city roads. How come I am only getting 450/18 i.e., = 25 (with the ac on at times thought.. but I think it is hosing for me.
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'99 5.7L extended cab 4x4. What kind of gas mileage is realistic for this truck? Guy told me he'd gotten 23mpg on the highway, that sounds unrealistic to me...
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