I have a bad gas mileage, how about yours ??
10-11-16, 01:52 PM
#331
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Additional information : I used a Bluetooth scanner to take the freeze frame data for the cel. I will attach it here. Then I will attach another scan of the current readings. Could anything be wrong pls?
10-27-16, 08:46 PM
#332
Driver School Candidate
I have a 2003 Lexus RX300 AWD with 170,000 miles with original transmission, and basic service intervals completed, and 2 timing belts. My mother in law got 17 mpg combined. I am getting 18 mpg city, 19.5 mpg combined, and 22 mpg all highway. My MPG is higher when I am using the cruise control, and stay around 70mph on the highway. It does not like being driven above 3000 RPM at a constant rate so setting your cruise at 80 mph will kill your fuel, and its harder on the mechanical components. Regardless the car is a work horse. Ive heard some people red line it for miles, and the car still lasts.
02-19-17, 09:16 AM
#334
Lexus Test Driver
My commute just jumped from about 40 miles a week to 320 miles a week, not including leisurely activities. So, although I don't like how it looks without the roof rack, I may be willing to accept that for a bit more mpg. lol
02-19-17, 02:03 PM
#335
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I removed the side rails as well. When you remove the rail bolds you can slide the bolt plates out of the recessed mounting slots and save them with the rails and cross bucks.
Resulted in plus 2 mpg + on my 01 model, with no other efforts. Although some of the asier items listed below will be on my future agenda.
Usdisng Crusie as much as possible will help (it is easier and mush more fractional on the accelerator than I can be with myy foot, and finding a good intermediate speed which increases your milage (I used the instantaneous milage on the panel to achieve an even better milage. Started out at 16.8 average, now at about 219.5 average but too much of my driving is consumed with short trips and stop and go traffic, and my quite often too heavy foot, which kills your milage overall.
when going to Florida, or North Carolina, from the Wheeling area I can get almost 21 mpg over all. Would do much better if the first several hundred miles wasn't nountainous.
Drop your racks, reset you average and watch it happen. If not satisfied, put them back on, takes about 10 minutes at the most. I actually picked this trip up from my son, who lives in the flat lands of Central Ohio. I clean and wax (and if needed repaint) the cross bars after I remove them for storage. If you needed on the week end , they go back on and off easily..
Resulted in plus 2 mpg + on my 01 model, with no other efforts. Although some of the asier items listed below will be on my future agenda.
Usdisng Crusie as much as possible will help (it is easier and mush more fractional on the accelerator than I can be with myy foot, and finding a good intermediate speed which increases your milage (I used the instantaneous milage on the panel to achieve an even better milage. Started out at 16.8 average, now at about 219.5 average but too much of my driving is consumed with short trips and stop and go traffic, and my quite often too heavy foot, which kills your milage overall.
when going to Florida, or North Carolina, from the Wheeling area I can get almost 21 mpg over all. Would do much better if the first several hundred miles wasn't nountainous.
Drop your racks, reset you average and watch it happen. If not satisfied, put them back on, takes about 10 minutes at the most. I actually picked this trip up from my son, who lives in the flat lands of Central Ohio. I clean and wax (and if needed repaint) the cross bars after I remove them for storage. If you needed on the week end , they go back on and off easily..
02-19-17, 02:29 PM
#336
Lexus Test Driver
I removed the side rails as well. When you remove the rail bolds you can slide the bolt plates out of the recessed mounting slots and save them with the rails and cross bucks.
Resulted in plus 2 mpg + on my 01 model, with no other efforts. Although some of the asier items listed below will be on my future agenda.
Usdisng Crusie as much as possible will help (it is easier and mush more fractional on the accelerator than I can be with myy foot, and finding a good intermediate speed which increases your milage (I used the instantaneous milage on the panel to achieve an even better milage. Started out at 16.8 average, now at about 219.5 average but too much of my driving is consumed with short trips and stop and go traffic, and my quite often too heavy foot, which kills your milage overall.
when going to Florida, or North Carolina, from the Wheeling area I can get almost 21 mpg over all. Would do much better if the first several hundred miles wasn't nountainous.
Drop your racks, reset you average and watch it happen. If not satisfied, put them back on, takes about 10 minutes at the most. I actually picked this trip up from my son, who lives in the flat lands of Central Ohio. I clean and wax (and if needed repaint) the cross bars after I remove them for storage. If you needed on the week end , they go back on and off easily..
Resulted in plus 2 mpg + on my 01 model, with no other efforts. Although some of the asier items listed below will be on my future agenda.
Usdisng Crusie as much as possible will help (it is easier and mush more fractional on the accelerator than I can be with myy foot, and finding a good intermediate speed which increases your milage (I used the instantaneous milage on the panel to achieve an even better milage. Started out at 16.8 average, now at about 219.5 average but too much of my driving is consumed with short trips and stop and go traffic, and my quite often too heavy foot, which kills your milage overall.
when going to Florida, or North Carolina, from the Wheeling area I can get almost 21 mpg over all. Would do much better if the first several hundred miles wasn't nountainous.
Drop your racks, reset you average and watch it happen. If not satisfied, put them back on, takes about 10 minutes at the most. I actually picked this trip up from my son, who lives in the flat lands of Central Ohio. I clean and wax (and if needed repaint) the cross bars after I remove them for storage. If you needed on the week end , they go back on and off easily..
06-25-17, 02:10 PM
#338
Driver School Candidate
Join Date: Jun 2017
Location: north holland
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Hi
first post
I have a rx300 - I love this car to bits and cant fault it to replace it.
I get about 19mpg around town and on long runs I get 28mpg and higher.
120000 miles and running like a dream
Have not changed the cambelt yet but might do soon.
first post
I have a rx300 - I love this car to bits and cant fault it to replace it.
I get about 19mpg around town and on long runs I get 28mpg and higher.
120000 miles and running like a dream
Have not changed the cambelt yet but might do soon.
Last edited by BillyAms; 06-25-17 at 02:24 PM.
06-26-17, 07:08 AM
#339
Hi BillAms !
Are you in flatlands?
What is your approx outside temp?
Have daily headwinds or tailwinds in your daily trips?
I get like 17/18 city and 24/25 turnpike with cruise on at 69mph. 10/15 mph average winds usually. Average temp ~ 80F. I have ~42k miles on my 2000 RX300 (it was formerly a senior's local around town ride). It was in good body shape too until last week when a guy cut a turn short and whacked my driver's mirror and rear fenderwell. At first he tried to say it was my fault. I said, oh no sir, and then showed him my dashcam. That ended the argument with him, and the video took care of his insurance company too. :-)
Regards . . .
Are you in flatlands?
What is your approx outside temp?
Have daily headwinds or tailwinds in your daily trips?
I get like 17/18 city and 24/25 turnpike with cruise on at 69mph. 10/15 mph average winds usually. Average temp ~ 80F. I have ~42k miles on my 2000 RX300 (it was formerly a senior's local around town ride). It was in good body shape too until last week when a guy cut a turn short and whacked my driver's mirror and rear fenderwell. At first he tried to say it was my fault. I said, oh no sir, and then showed him my dashcam. That ended the argument with him, and the video took care of his insurance company too. :-)
Regards . . .
08-01-17, 02:27 AM
#340
Driver School Candidate
Join Date: Jun 2017
Location: north holland
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Hi BillAms !
Are you in flatlands?
What is your approx outside temp?
Have daily headwinds or tailwinds in your daily trips?
I get like 17/18 city and 24/25 turnpike with cruise on at 69mph. 10/15 mph average winds usually. Average temp ~ 80F. I have ~42k miles on my 2000 RX300 (it was formerly a senior's local around town ride). It was in good body shape too until last week when a guy cut a turn short and whacked my driver's mirror and rear fenderwell. At first he tried to say it was my fault. I said, oh no sir, and then showed him my dashcam. That ended the argument with him, and the video took care of his insurance company too. :-)
Regards . . .
Are you in flatlands?
What is your approx outside temp?
Have daily headwinds or tailwinds in your daily trips?
I get like 17/18 city and 24/25 turnpike with cruise on at 69mph. 10/15 mph average winds usually. Average temp ~ 80F. I have ~42k miles on my 2000 RX300 (it was formerly a senior's local around town ride). It was in good body shape too until last week when a guy cut a turn short and whacked my driver's mirror and rear fenderwell. At first he tried to say it was my fault. I said, oh no sir, and then showed him my dashcam. That ended the argument with him, and the video took care of his insurance company too. :-)
Regards . . .
yes, living in the flatlands
Approximate outside temp is 21c
Theres not too much headwind as far as I can tell
I managed to eek out 400 miles on a tank over 5 days commuting to work .. quite pleased.
Im no slouch on the highway, but Im doing about 70mph with some overtaking (80mph).
Its an old motor now but heck its so smooth. I do tend to let it warm up in the morning so the temp goes to its "running level" and the revs come down.
Sorry for the late reply
btw its a 2003 rx 300
12-19-17, 08:00 AM
#341
I have a 99 RX300 that has been in the family all along. Currently it has about 80K miles with basic maintenance. Replaced one Oxygen sensor about 8 years ago. Its fuel efficiency has recently dropped to about 11mpg. I've cleaned the MAF sensor as advised in this forum after CEL came on but it hasn't helped. CEL has returned after a month. My readings are as follows:
Please advise. Thank you.
Please advise. Thank you.
12-19-17, 01:42 PM
#342
Pole Position
Two things jump out of that data. 1) short term fuel trim on bank 2 is absolutely maxed out at full rich but the long term is in a reasonable range. I can't explain why the long term trim isn't compensating but something is wrong with bank2. 2) Your IAT sensor is FUBAR. No way your getting 149 degree intake temperature. I'd start by testing and/or replacing that sensor.
12-19-17, 10:03 PM
#343
Two things jump out of that data. 1) short term fuel trim on bank 2 is absolutely maxed out at full rich but the long term is in a reasonable range. I can't explain why the long term trim isn't compensating but something is wrong with bank2. 2) Your IAT sensor is FUBAR. No way your getting 149 degree intake temperature. I'd start by testing and/or replacing that sensor.
Is the IAT sensor embedded in the MAF or is it a separate sensor and if so, where would I find the part number for this sensor?
I am attaching a snapshot of engine data in case it offers any additional info.
12-20-17, 05:57 AM
#344
Pole Position
Yes, the IAT is part of the MAF sensor. You can get the part number right off the top of the unit. Its in the intake snorkel between the air filter and the throttle body. It has a connector with 5 wires going into it. The part number on mine is 22204-07010.
On second look at your data PIDS I see that there is a line for "Short Term Fuel Trim - Bank 2" and "Bank 2 Sensor 1 Short Term Fuel Trim". This is peculiar. They should have the same value and I don't know why there would be two descriptions for the same sensor. The value on the second one looks reasonable. Can your scan tool plot data? If so, make a graph of the B2S1 data and go for a drive. It should go rich on wide open throttle and lean when you coast. It should be <10% at a steady cruise.
On second look at your data PIDS I see that there is a line for "Short Term Fuel Trim - Bank 2" and "Bank 2 Sensor 1 Short Term Fuel Trim". This is peculiar. They should have the same value and I don't know why there would be two descriptions for the same sensor. The value on the second one looks reasonable. Can your scan tool plot data? If so, make a graph of the B2S1 data and go for a drive. It should go rich on wide open throttle and lean when you coast. It should be <10% at a steady cruise.
