SPONSORED LINKS

2000 Subaru Impreza Bad gas milage

Tiny
ASHER_23
  • MEMBER
  • 2000 SUBARU IMPREZA
  • 199,400 MILES
After purchasing the car I serviced it, change the fuel filter, spark plugs everything. But still having bad gas mileage, after careful observation I found out it didn't have an o2 sensor now I'm realizing that it never had one and I want to get one but I'm learning that I would have to also change the ecu. I have an oil leak at the rear crank seal and valve seals wondering if that is also constituting to the bad gas mileage. I need help desperately. Oh before I forget it's 1.6l sohc engine.
SPONSORED LINKS
Monday, September 23rd, 2013 AT 1:53 PM

10 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
Is the check engine light on?

Have the codes read and post the NUMBERS here.
Was this
answer
helpful?
Yes
No
Monday, September 23rd, 2013 AT 2:39 PM
Tiny
ASHER_23
  • MEMBER
  • 6 POSTS
Nope there is no check engine light, like I said the car apparently was not made with the o2 sensor so the light would not go on, and yes there is the wire connection to add one.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Tuesday, September 24th, 2013 AT 7:39 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
Of course it was made with an 0/2 sensor and yes the light will come on if it's not operating properly unless someone has disabled the light.

Federal law mandates the sensor om a 2000 vehicle
Was this
answer
helpful?
Yes
No
Tuesday, September 24th, 2013 AT 7:48 AM
Tiny
ASHER_23
  • MEMBER
  • 6 POSTS
Well Maybe they did disable it, but I took off the catalytic converter and there was no bung for the sensor to go into.
Was this
answer
helpful?
Yes
No
Tuesday, September 24th, 2013 AT 9:22 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
Then I don't understand what you're complaining about. You already know the system has been modified.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Tuesday, September 24th, 2013 AT 9:31 AM
Tiny
ASHER_23
  • MEMBER
  • 6 POSTS
I don't know anything. How can I find out if the if it was disable.
Was this
answer
helpful?
Yes
No
Tuesday, September 24th, 2013 AT 10:11 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
Does the check engine light come on for bulb check when the key is turned on but not started?

It really doesn't matter. If the car has no 0/2 sensors, it has no fuel control.
Was this
answer
helpful?
Yes
No
Tuesday, September 24th, 2013 AT 11:16 AM
Tiny
ASHER_23
  • MEMBER
  • 6 POSTS
Yes it comes on when I turn the key after it's started the light comes off. But if the light is not coming on then how can I check to see if its disable because I intend on buying a sensor and drilling the hole, but I was told also that I may need to change the ecu also; I would hope not.
Was this
answer
helpful?
Yes
No
Tuesday, September 24th, 2013 AT 11:25 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
No, you are way out in left field here. You need to have a professional look at it.
Was this
answer
helpful?
Yes
No
Tuesday, September 24th, 2013 AT 11:47 AM
Tiny
ASHER_23
  • MEMBER
  • 6 POSTS
Ok thank you for your help.
Was this
answer
helpful?
Yes
No
Tuesday, September 24th, 2013 AT 12:09 PM

Please login or register to post a reply.

Related Engine Poor Mileage Content

VIEW MORE

Sponsored links