 » Site Navigation | | | | » Recent Threads | | | |  |  |  |  11-22-2004, 07:04 PM | #1 | | Member Join Date: Jul 2003 Location: Omaha, NE Posts: 38 |  HUGE mpg change. HELP!!!
Hey everyone. I have a 96 TI and I used to get about 400 miles on a tank of gas. I commute to work every day and it has been the same route for the past 4 years. All of a sudden, about 3-4 weeks ago my mpg dropped dramatically. Right now I am getting about 340 miles out of the tank. With the prices of gas now, this isn't the best time for it to be doing this ya know? But, I thought it could be the air filter so I changed it to a RamFX system. Gave me more horse but didn't solve my problem. I then decided to change my plugs. Made the car run a little smoother, but again, didn't fix my problem. I checked the tire pressure on all of my tires and they are dead on, so, I do not know where this is coming from. If anyone has any ideas on what this could be, your help would be GREATLY appreciated!!! Thanks!
Jeph __________________
1996 318ti. Polyurethane bushings, angel eyes, clear signals, BOMZ racing exhaust, reverse-glo guages, pioneer system, short shifter. |  |  | | 11-22-2004, 07:08 PM | #2 | | Senior Member Join Date: Jun 2003 Location: Toronto Posts: 148 |
O2 sensors? Quote: | Originally Posted by jeph23 Hey everyone. I have a 96 TI and I used to get about 400 miles on a tank of gas. I commute to work every day and it has been the same route for the past 4 years. All of a sudden, about 3-4 weeks ago my mpg dropped dramatically. Right now I am getting about 340 miles out of the tank. With the prices of gas now, this isn't the best time for it to be doing this ya know? But, I thought it could be the air filter so I changed it to a RamFX system. Gave me more horse but didn't solve my problem. I then decided to change my plugs. Made the car run a little smoother, but again, didn't fix my problem. I checked the tire pressure on all of my tires and they are dead on, so, I do not know where this is coming from. If anyone has any ideas on what this could be, your help would be GREATLY appreciated!!! Thanks!
Jeph | __________________ 1996 318ti Active Garrett aspirated...
1996 318ti Sport | | | | | 11-22-2004, 07:37 PM | #3 | | Senior Member Join Date: Jun 2003 Location: Greenville, SC Posts: 9,356 |
Does your area change to oxygenated gas? __________________ ...steven
BMW CCA #146825
1996 BMW 328ti • 2003 MINI Cooper S • 2016 M235i
www.bmwcca.org
| | | | | 11-23-2004, 08:32 PM | #4 | | Senior Member Join Date: Jun 2003 Location: Manhattan Kansas Posts: 242 |
O2 sensors | | | | | 11-23-2004, 10:42 PM | #5 | | Member Join Date: Aug 2004 Location: Santa Clara Posts: 97 |
Definately o2 sensors! change is real easy! Do not waste money on the Tool! __________________ ***SOLD***The Ultimate Dying Machine!!! 
'97 318Ti, Active. 17" wheels
***SOLD***
137k Hard driven miles.  | | | | | 11-24-2004, 01:44 AM | #6 | | Senior Member Join Date: Jun 2003 Location: Greenville, SC Posts: 9,356 |
How can anyone be so sure it is 02 sensors? And which 02 sensors? Pre cat and/or post cat? __________________ ...steven
BMW CCA #146825
1996 BMW 328ti • 2003 MINI Cooper S • 2016 M235i
www.bmwcca.org
| | | | | 11-24-2004, 04:20 AM | #7 | | Member Join Date: Oct 2004 Location: PA Posts: 78 |
I would take your car to an inspection garage and have them plug into your car to see which error codes come up. That way you'll know exactly whats wrong. | | | | | 11-24-2004, 05:35 AM | #8 | | Senior Member Join Date: Jul 2004 Location: Columbia S.C. Posts: 127 |
definatley,definatly O2 sensor, yeah, yeah, definatly. Wapner @ 5:00, Wapner @ 5:00 !!!!
you guys should charge $100 an hour for correctly scanning codes over the internet and give a 12 month - 12,0000 mile warrenty on all parts and labor. Once again your killing me!!!! | | | | | 11-24-2004, 05:51 AM | #9 | | Senior Member Join Date: Jun 2003 Location: Greenville, SC Posts: 9,356 |
Going off topic a bit, I love when people diagnosis a check engine light over the internet.  __________________ ...steven
BMW CCA #146825
1996 BMW 328ti • 2003 MINI Cooper S • 2016 M235i
www.bmwcca.org
| | | | | 11-24-2004, 05:57 AM | #10 | | Junior Member Join Date: Nov 2004 Location: lafayette, la Posts: 26 |
we'll you didn't forget to take the dead body out of the trunk did you???? thats an extra 160lbs... then try o2 sensors | | | | | 11-24-2004, 06:11 AM | #11 | | Senior Member Join Date: Aug 2004 Location: oc-california Posts: 239 |
at autozone in my town have ODB2 code readers that anyone can use for free. Check into that and save cash. | | | | |
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