If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Volvo 1988 740 GLE Low gas mileage.
I have a 1988 Volvo 740 GLE Wagon. It runs very rich. It does something
like 18mpg or so in the city and around 23mpg or so on the highway. I changed the O2 sensor, the spark plugs are relatively new, the gas pressure regulator, the fuel filter. I have tried additives to clean injector but all this just went in vein. Does anyone have any clues as what to investigate? What might be the problem? I like the car very much and hope that I can drive more often but I only try to take it in longer trips because of its bad fuel economy. The car has 150Kmiles on it. Any help will be very much appreciated. |
Ads |
#2
|
|||
|
|||
Volvo 1988 740 GLE Low gas mileage.
You are stumbling around changing parts with no real idea of what the
problem is. You still have the chance to save yourself some money. Just take the car to a mechanic with the proper diagnostic equipment and let them find the cause of the problem and fix it. > Sharshera wrote: > I have a 1988 Volvo 740 GLE Wagon. It runs very rich. It does something > like 18mpg or so in the city and around 23mpg or so on the highway. > > I changed the O2 sensor, the spark plugs are relatively new, the gas > pressure regulator, the fuel filter. I have tried additives to clean > injector but all this just went in vein. > > Does anyone have any clues as what to investigate? What might be the > problem? > I like the car very much and hope that I can drive more often but I > only try to take it in longer trips because of its bad fuel economy. > > The car has 150Kmiles on it. > > > Any help will be very much appreciated. |
#3
|
|||
|
|||
Volvo 1988 740 GLE Low gas mileage.
"Sharshera" > wrote in message oups.com... >I have a 1988 Volvo 740 GLE Wagon. It runs very rich. It does something > like 18mpg or so in the city and around 23mpg or so on the highway. > > I changed the O2 sensor, the spark plugs are relatively new, the gas > pressure regulator, the fuel filter. I have tried additives to clean > injector but all this just went in vein. > > Does anyone have any clues as what to investigate? What might be the > problem? > I like the car very much and hope that I can drive more often but I > only try to take it in longer trips because of its bad fuel economy. > > The car has 150Kmiles on it. > > > Any help will be very much appreciated. > What engine and transmission do you have ? What kind of mileage are you expecting ? You stated " It does something like 18mpg or so in the city and around 23mpg or so on the highway." How did you arrive at these figures ? The only way to accurately figure fuel mileage is to divide miles travelled by the amount of fuel used. You need to do this over several tanks of gas to get an average. |
#4
|
|||
|
|||
Volvo 1988 740 GLE Low gas mileage.
Mike wrote: > "Sharshera" > wrote in message > oups.com... > >I have a 1988 Volvo 740 GLE Wagon. It runs very rich. It does something > > like 18mpg or so in the city and around 23mpg or so on the highway. > > > > I changed the O2 sensor, the spark plugs are relatively new, the gas > > pressure regulator, the fuel filter. I have tried additives to clean > > injector but all this just went in vein. > > > > Does anyone have any clues as what to investigate? What might be the > > problem? > > I like the car very much and hope that I can drive more often but I > > only try to take it in longer trips because of its bad fuel economy. > > > > The car has 150Kmiles on it. > > > > > > Any help will be very much appreciated. > > > > What engine and transmission do you have ? What kind of mileage are you > expecting ? The engine is the B230F. It is a 8valve nonTurbo. I don't have the Automatic Transmission exact model. > You stated " It does something like 18mpg or so in the city > and around 23mpg or so on the highway." How did you arrive at these figures > ? The only way to accurately figure fuel mileage is to divide miles > travelled by the amount of fuel used. You need to do this over several tanks > of gas to get an average. I did that for the highway miles. I took to around 5 Long road trips (1200 miles per trip). And that is how I computed the mileage for the highway. I did it similarly for the city driving. |
#5
|
|||
|
|||
Volvo 1988 740 GLE Low gas mileage.
John S. wrote: > You are stumbling around changing parts with no real idea of what the > problem is. You still have the chance to save yourself some money. > Just take the car to a mechanic with the proper diagnostic equipment > and let them find the cause of the problem and fix it. You are actually right. I want to do that but the problem is sometimes if you go to some mechanics they would just rip you off to make money and I try to minimize that rip off as much as possible. I was wondering if my concern is real or it is just fine as it is. I am not really sure. I have seen a manual transmission 1989 Volvo 740 GL do on the highway something like 28 or 27 mpg according to a mechanically savvy friend. Is that difference is only attributed for the difference in transimission only. I don't know? I will probably get it to the nearest dealer? Or known Volvo mechanic? > > > Sharshera wrote: > > I have a 1988 Volvo 740 GLE Wagon. It runs very rich. It does something > > like 18mpg or so in the city and around 23mpg or so on the highway. > > > > I changed the O2 sensor, the spark plugs are relatively new, the gas > > pressure regulator, the fuel filter. I have tried additives to clean > > injector but all this just went in vein. > > > > Does anyone have any clues as what to investigate? What might be the > > problem? > > I like the car very much and hope that I can drive more often but I > > only try to take it in longer trips because of its bad fuel economy. > > > > The car has 150Kmiles on it. > > > > > > Any help will be very much appreciated. |
#6
|
|||
|
|||
Volvo 1988 740 GLE Low gas mileage.
"Sharshera" > wrote in message oups.com... > > Mike wrote: >> "Sharshera" > wrote in message >> oups.com... >> >I have a 1988 Volvo 740 GLE Wagon. It runs very rich. It does something >> > like 18mpg or so in the city and around 23mpg or so on the highway. >> > >> > I changed the O2 sensor, the spark plugs are relatively new, the gas >> > pressure regulator, the fuel filter. I have tried additives to clean >> > injector but all this just went in vein. >> > >> > Does anyone have any clues as what to investigate? What might be the >> > problem? >> > I like the car very much and hope that I can drive more often but I >> > only try to take it in longer trips because of its bad fuel economy. >> > >> > The car has 150Kmiles on it. >> > >> > >> > Any help will be very much appreciated. >> > >> >> What engine and transmission do you have ? What kind of mileage are you >> expecting ? > > The engine is the B230F. It is a 8valve nonTurbo. > I don't have the Automatic Transmission exact model. > >> You stated " It does something like 18mpg or so in the city >> and around 23mpg or so on the highway." How did you arrive at these >> figures >> ? The only way to accurately figure fuel mileage is to divide miles >> travelled by the amount of fuel used. You need to do this over several >> tanks >> of gas to get an average. > > I did that for the highway miles. I took to around 5 Long road trips > (1200 miles per trip). And that is how I computed the mileage for the > highway. I did it similarly for the city driving. > EPA mileage figures for your car are 22 city, 28 highway so your mileage figures look a little low. You say the car is running very rich, how can you tell ? Have you checked coolant temp sensor ? If the sensor has failed and is telling the computer that the engine is colder than it actually is your mileage will be low. You also need to make sure the thermostat is working properly or the engine may never fully warm up which will also cause it to run rich. There are many factors which affect fuel economy. Tire pressure, engine tune, engine condition, high speeds, heavy traffic, etc..... will also cause a reduction in mileage. Any decent mechanic should be able to check your car over for any problems that may cause reduced mileage. One other thought, cheap gas from cut rate stations can also cause a substantial reduction in mileage. |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Electronic Stability Control, cross-referenced to NCAP safety ratings | John Bartley | Driving | 0 | January 2nd 06 08:09 PM |
A modest fuel saving proposal: no more than 3000 RPM | Daniel W. Rouse Jr. | Driving | 133 | October 1st 05 04:16 AM |
Tips to Boost Gas Mileage & Performance | Michael Sinatra | Corvette | 1 | August 18th 05 06:14 PM |
Tips to Boost Gas Mileage & Performance | Michael Sinatra | Corvette | 1 | August 16th 05 01:26 AM |
Two Million Miles in a '66 Volvo P1800 | Highway Star | General | 0 | July 5th 04 02:00 AM |