Fuel consumption - 2005 Tucson
I have a Tucson, 2005, automatic, 4WD, 6 cyl. Though I got a good deal when
I stumbled on a used one (3300 miles) and bought it at a good price. But mileage has been awful. I've put 2000 miles on it so far, and mpg has dropped off from 13 mpg to current 10 mpg... I had only one lengthy freeway run, about 200 miles, and even then only did about 17 mpg. Does anyone have any thoughts? I took it to dealer; mechanic says there is nothing wrong with car, but I disagree. I don't know how to approach this problem mechanically. Judy |
Re: Fuel consumption - 2005 Tucson
Chances are, the technician's right. The technician has the capability to
see the computer's data stream and make sure everything appears correct. As to what you can do: Drive the vehicle easily. If your in an urban area, this will be difficult. Make sure the vehicle engages all 4 forward gears and that the engine seems to run well. |
Re: Fuel consumption - 2005 Tucson
Chances are, the technician's right. The technician has the capability to
see the computer's data stream and make sure everything appears correct. As to what you can do: Drive the vehicle easily. If your in an urban area, this will be difficult. Make sure the vehicle engages all 4 forward gears and that the engine seems to run well. |
Re: Fuel consumption - 2005 Tucson
Chances are, the technician's right. The technician has the capability to
see the computer's data stream and make sure everything appears correct. As to what you can do: Drive the vehicle easily. If your in an urban area, this will be difficult. Make sure the vehicle engages all 4 forward gears and that the engine seems to run well. |
Re: Fuel consumption - 2005 Tucson
Judith Raskin wrote:
> I have a Tucson, 2005, automatic, 4WD, 6 cyl. Though I got a good deal when > I stumbled on a used one (3300 miles) and bought it at a good price. But > mileage has been awful. I've put 2000 miles on it so far, and mpg has > dropped off from 13 mpg to current 10 mpg... hyundaitech wrote: > Chances are, the technician's right. The technician has the capability to > see the computer's data stream and make sure everything appears correct. Chances are, the technician is wrong. Just because he or she can read the data doesn't guarantee the data is correct. Your Tucson has an EPA rating of 17mpg city/22mpg highway. Real world mileage is always a little less. But not 10 mpg. Carefully measure your gas usage and odometer readings. If you really are getting only 10 mpg, then there is something wrong. Me, I'd pull a spark plug or two to see if its running rich -- maybe the onboard chip has got the air/fuel mix wrong, or a fuel injector is bad, or ... you get the idea. For the tech to read the data and shrug his or her shoulders and say nothing is wrong is being a little lazy, IMHO. |
Re: Fuel consumption - 2005 Tucson
Judith Raskin wrote:
> I have a Tucson, 2005, automatic, 4WD, 6 cyl. Though I got a good deal when > I stumbled on a used one (3300 miles) and bought it at a good price. But > mileage has been awful. I've put 2000 miles on it so far, and mpg has > dropped off from 13 mpg to current 10 mpg... hyundaitech wrote: > Chances are, the technician's right. The technician has the capability to > see the computer's data stream and make sure everything appears correct. Chances are, the technician is wrong. Just because he or she can read the data doesn't guarantee the data is correct. Your Tucson has an EPA rating of 17mpg city/22mpg highway. Real world mileage is always a little less. But not 10 mpg. Carefully measure your gas usage and odometer readings. If you really are getting only 10 mpg, then there is something wrong. Me, I'd pull a spark plug or two to see if its running rich -- maybe the onboard chip has got the air/fuel mix wrong, or a fuel injector is bad, or ... you get the idea. For the tech to read the data and shrug his or her shoulders and say nothing is wrong is being a little lazy, IMHO. |
Re: Fuel consumption - 2005 Tucson
Judith Raskin wrote:
> I have a Tucson, 2005, automatic, 4WD, 6 cyl. Though I got a good deal when > I stumbled on a used one (3300 miles) and bought it at a good price. But > mileage has been awful. I've put 2000 miles on it so far, and mpg has > dropped off from 13 mpg to current 10 mpg... hyundaitech wrote: > Chances are, the technician's right. The technician has the capability to > see the computer's data stream and make sure everything appears correct. Chances are, the technician is wrong. Just because he or she can read the data doesn't guarantee the data is correct. Your Tucson has an EPA rating of 17mpg city/22mpg highway. Real world mileage is always a little less. But not 10 mpg. Carefully measure your gas usage and odometer readings. If you really are getting only 10 mpg, then there is something wrong. Me, I'd pull a spark plug or two to see if its running rich -- maybe the onboard chip has got the air/fuel mix wrong, or a fuel injector is bad, or ... you get the idea. For the tech to read the data and shrug his or her shoulders and say nothing is wrong is being a little lazy, IMHO. |
Re: Fuel consumption - 2005 Tucson
Thanks, that's how I feel. The Hyundai tech may be treating this somewhat
cavalierly. I will have to go back to the shop. I do treat my car well, although it is used mostly in city driving. But I don't have either a heavy or a light foot on the pedal. I know how to drive. Judy "Folsom Inmate" <aintgotone@noway.net> wrote in message news:cLF_f.58076$F_3.39287@newssvr29.news.prodigy. net... > Judith Raskin wrote: >> I have a Tucson, 2005, automatic, 4WD, 6 cyl. Though I got a good deal >> when I stumbled on a used one (3300 miles) and bought it at a good price. >> But mileage has been awful. I've put 2000 miles on it so far, and mpg >> has dropped off from 13 mpg to current 10 mpg... > > hyundaitech wrote: >> Chances are, the technician's right. The technician has the capability >> to >> see the computer's data stream and make sure everything appears correct. > > > Chances are, the technician is wrong. Just because he or she can read the > data doesn't guarantee the data is correct. > > Your Tucson has an EPA rating of 17mpg city/22mpg highway. Real world > mileage is always a little less. But not 10 mpg. Carefully measure your > gas usage and odometer readings. If you really are getting only 10 mpg, > then there is something wrong. Me, I'd pull a spark plug or two to see if > its running rich -- maybe the onboard chip has got the air/fuel mix wrong, > or a fuel injector is bad, or ... you get the idea. > > For the tech to read the data and shrug his or her shoulders and say > nothing is wrong is being a little lazy, IMHO. |
Re: Fuel consumption - 2005 Tucson
Thanks, that's how I feel. The Hyundai tech may be treating this somewhat
cavalierly. I will have to go back to the shop. I do treat my car well, although it is used mostly in city driving. But I don't have either a heavy or a light foot on the pedal. I know how to drive. Judy "Folsom Inmate" <aintgotone@noway.net> wrote in message news:cLF_f.58076$F_3.39287@newssvr29.news.prodigy. net... > Judith Raskin wrote: >> I have a Tucson, 2005, automatic, 4WD, 6 cyl. Though I got a good deal >> when I stumbled on a used one (3300 miles) and bought it at a good price. >> But mileage has been awful. I've put 2000 miles on it so far, and mpg >> has dropped off from 13 mpg to current 10 mpg... > > hyundaitech wrote: >> Chances are, the technician's right. The technician has the capability >> to >> see the computer's data stream and make sure everything appears correct. > > > Chances are, the technician is wrong. Just because he or she can read the > data doesn't guarantee the data is correct. > > Your Tucson has an EPA rating of 17mpg city/22mpg highway. Real world > mileage is always a little less. But not 10 mpg. Carefully measure your > gas usage and odometer readings. If you really are getting only 10 mpg, > then there is something wrong. Me, I'd pull a spark plug or two to see if > its running rich -- maybe the onboard chip has got the air/fuel mix wrong, > or a fuel injector is bad, or ... you get the idea. > > For the tech to read the data and shrug his or her shoulders and say > nothing is wrong is being a little lazy, IMHO. |
Re: Fuel consumption - 2005 Tucson
Thanks, that's how I feel. The Hyundai tech may be treating this somewhat
cavalierly. I will have to go back to the shop. I do treat my car well, although it is used mostly in city driving. But I don't have either a heavy or a light foot on the pedal. I know how to drive. Judy "Folsom Inmate" <aintgotone@noway.net> wrote in message news:cLF_f.58076$F_3.39287@newssvr29.news.prodigy. net... > Judith Raskin wrote: >> I have a Tucson, 2005, automatic, 4WD, 6 cyl. Though I got a good deal >> when I stumbled on a used one (3300 miles) and bought it at a good price. >> But mileage has been awful. I've put 2000 miles on it so far, and mpg >> has dropped off from 13 mpg to current 10 mpg... > > hyundaitech wrote: >> Chances are, the technician's right. The technician has the capability >> to >> see the computer's data stream and make sure everything appears correct. > > > Chances are, the technician is wrong. Just because he or she can read the > data doesn't guarantee the data is correct. > > Your Tucson has an EPA rating of 17mpg city/22mpg highway. Real world > mileage is always a little less. But not 10 mpg. Carefully measure your > gas usage and odometer readings. If you really are getting only 10 mpg, > then there is something wrong. Me, I'd pull a spark plug or two to see if > its running rich -- maybe the onboard chip has got the air/fuel mix wrong, > or a fuel injector is bad, or ... you get the idea. > > For the tech to read the data and shrug his or her shoulders and say > nothing is wrong is being a little lazy, IMHO. |
Re: Fuel consumption - 2005 Tucson
Folsom said:
Me, I'd pull a spark plug or two to see if its running rich -- maybe the onboard chip has got the air/fuel mix wrong, or a fuel injector is bad, or ... you get the idea. For the tech to read the data and shrug his or her shoulders and say nothing is wrong is being a little lazy, IMHO. ----------------------------------------- I think you fail to understand what the technician can see and interpret. A good technician can drive the vehicle and tell whether it has the proper amount of power, whether the transmission or clutch is slipping, and whether the transmission shifts through all the gears properly. A good technician can look at the data stream and see whether the vehicle is running rich; he doesn't need to pull a spark plug to do that. In the data stream, the technician will see values for the oxygen sensor readings and the fuel trims. The oxygen sensors, combined with the programming of the engine control module, control the fuel mixture. So, to determine if the vehicle is controlling the mixture properly, the technician looks to see if the front oxygen sensors cycle properly. The technician looks at the fuel trims to see that the computer isn't unexpectedly providing significantly more or less fuel than expected for the given operating conditions. Excessively large fuel trims (in either direction) indicate problems with oxygen sensors, unexpected air or fuel leakage into the intake/combustion chamber, or possibly other problems. And this isn't the limit of the data the technician can see. A good technician doesn't just read the data; he interprets the data to see whether it appears correct. So, no it's not lazy. It's the technician performing a task to approach a problem in a logical and efficient manner. Suppose you were footing the bill? Would you want to continue paying the technician to pull stuff apart until he found something? How much would you spend without the technician finding anything before you were willing to give up? Would your engine be in pieces on the floor? The reality is that checking the data stream, combined with a test drive, *is* an effective way to determine whether a vehicle is running properly. I give some kudos to this customer. She actually knows her fuel economy. Most of the customers who complain about their fuel economy have no idea what it is and many are confused about how to compute it. It's sad, really. And I agree this poster's fuel economy is low enough to give some pause. But I know neither the customer's driving style nor driving conditions. It's enough that I'd look pretty hard at all the data. I'd also want some more information regarding what is involved in a typical daily trip for this customer-- especially if I found nothing wrong. Does she warm the vehicle prior to starting a trip? How short are the trips? In what sort of traffic are the trips taken? Just like any other problem, this one needs to be aproached logically in order to find a resolution. |
Re: Fuel consumption - 2005 Tucson
Folsom said:
Me, I'd pull a spark plug or two to see if its running rich -- maybe the onboard chip has got the air/fuel mix wrong, or a fuel injector is bad, or ... you get the idea. For the tech to read the data and shrug his or her shoulders and say nothing is wrong is being a little lazy, IMHO. ----------------------------------------- I think you fail to understand what the technician can see and interpret. A good technician can drive the vehicle and tell whether it has the proper amount of power, whether the transmission or clutch is slipping, and whether the transmission shifts through all the gears properly. A good technician can look at the data stream and see whether the vehicle is running rich; he doesn't need to pull a spark plug to do that. In the data stream, the technician will see values for the oxygen sensor readings and the fuel trims. The oxygen sensors, combined with the programming of the engine control module, control the fuel mixture. So, to determine if the vehicle is controlling the mixture properly, the technician looks to see if the front oxygen sensors cycle properly. The technician looks at the fuel trims to see that the computer isn't unexpectedly providing significantly more or less fuel than expected for the given operating conditions. Excessively large fuel trims (in either direction) indicate problems with oxygen sensors, unexpected air or fuel leakage into the intake/combustion chamber, or possibly other problems. And this isn't the limit of the data the technician can see. A good technician doesn't just read the data; he interprets the data to see whether it appears correct. So, no it's not lazy. It's the technician performing a task to approach a problem in a logical and efficient manner. Suppose you were footing the bill? Would you want to continue paying the technician to pull stuff apart until he found something? How much would you spend without the technician finding anything before you were willing to give up? Would your engine be in pieces on the floor? The reality is that checking the data stream, combined with a test drive, *is* an effective way to determine whether a vehicle is running properly. I give some kudos to this customer. She actually knows her fuel economy. Most of the customers who complain about their fuel economy have no idea what it is and many are confused about how to compute it. It's sad, really. And I agree this poster's fuel economy is low enough to give some pause. But I know neither the customer's driving style nor driving conditions. It's enough that I'd look pretty hard at all the data. I'd also want some more information regarding what is involved in a typical daily trip for this customer-- especially if I found nothing wrong. Does she warm the vehicle prior to starting a trip? How short are the trips? In what sort of traffic are the trips taken? Just like any other problem, this one needs to be aproached logically in order to find a resolution. |
Re: Fuel consumption - 2005 Tucson
Folsom said:
Me, I'd pull a spark plug or two to see if its running rich -- maybe the onboard chip has got the air/fuel mix wrong, or a fuel injector is bad, or ... you get the idea. For the tech to read the data and shrug his or her shoulders and say nothing is wrong is being a little lazy, IMHO. ----------------------------------------- I think you fail to understand what the technician can see and interpret. A good technician can drive the vehicle and tell whether it has the proper amount of power, whether the transmission or clutch is slipping, and whether the transmission shifts through all the gears properly. A good technician can look at the data stream and see whether the vehicle is running rich; he doesn't need to pull a spark plug to do that. In the data stream, the technician will see values for the oxygen sensor readings and the fuel trims. The oxygen sensors, combined with the programming of the engine control module, control the fuel mixture. So, to determine if the vehicle is controlling the mixture properly, the technician looks to see if the front oxygen sensors cycle properly. The technician looks at the fuel trims to see that the computer isn't unexpectedly providing significantly more or less fuel than expected for the given operating conditions. Excessively large fuel trims (in either direction) indicate problems with oxygen sensors, unexpected air or fuel leakage into the intake/combustion chamber, or possibly other problems. And this isn't the limit of the data the technician can see. A good technician doesn't just read the data; he interprets the data to see whether it appears correct. So, no it's not lazy. It's the technician performing a task to approach a problem in a logical and efficient manner. Suppose you were footing the bill? Would you want to continue paying the technician to pull stuff apart until he found something? How much would you spend without the technician finding anything before you were willing to give up? Would your engine be in pieces on the floor? The reality is that checking the data stream, combined with a test drive, *is* an effective way to determine whether a vehicle is running properly. I give some kudos to this customer. She actually knows her fuel economy. Most of the customers who complain about their fuel economy have no idea what it is and many are confused about how to compute it. It's sad, really. And I agree this poster's fuel economy is low enough to give some pause. But I know neither the customer's driving style nor driving conditions. It's enough that I'd look pretty hard at all the data. I'd also want some more information regarding what is involved in a typical daily trip for this customer-- especially if I found nothing wrong. Does she warm the vehicle prior to starting a trip? How short are the trips? In what sort of traffic are the trips taken? Just like any other problem, this one needs to be aproached logically in order to find a resolution. |
Re: Fuel consumption - 2005 Tucson
My 2002 Sante Fe was getting 13 mpg City. Turned out to be BP
gasoline! I switched to Marathon or Shell & get 22 City/ 30 Hwy & its an automatic! SO good gas at 97 octane since high test isn't needed wins. I was also told by my tech never to fill up in the rain, and to run it down to 1/8 of a tank to fill & that gives me correct mileage which 1/4 tank doesn't. So try all of this & let us know. |
Re: Fuel consumption - 2005 Tucson
My 2002 Sante Fe was getting 13 mpg City. Turned out to be BP
gasoline! I switched to Marathon or Shell & get 22 City/ 30 Hwy & its an automatic! SO good gas at 97 octane since high test isn't needed wins. I was also told by my tech never to fill up in the rain, and to run it down to 1/8 of a tank to fill & that gives me correct mileage which 1/4 tank doesn't. So try all of this & let us know. |
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