1996 Corolla 4L 1.6 Base PLEASE HELP!

[hawkeyeblue]

I have 1996 Corolla 4L 1.6 Base and (I think) fuel consumption is very high currently its 6.5 – 7.5 KM per littler or the full tank of 50 liters gave me 325KM. I showed it to couple of mechanics and all have difference view couple were suggesting power plugs change with full tune up, but I have changed power plugs just Feb 2007 and sin since then I have ran only 7000 KM. Another mechanic suggested changing Oxygen Sensors. If I would be sure I would go with either or both suggestions (but i am so freaking confused) but I suspect even after this $400 job is done i would still have same problem and they will tell me Oh! That was fine but something else was the real reason for the high consumption.

I request you folks to tell me, how much should be my average consumption and how can I improve/fix it and secondly if I have to change oxygen sensors how many are on 1996 Corolla 4L 1.6 Base and how much on average it should cost?

[diesel1962]

Hi.Is your car an auto or stick shift transmisson?? I have a 1997 Corolla,and get 32-35 mpg,with an 3 speed auto transmisson.I know there is an O2 sensor at the exhaust manifold.There might be one near the CAT convertor.I'll ckeck today if there is one as I am going to do an oil change today. Good luck....Diesel 1962

[Headnsouth]

Do you have any DTC's? Get your cars computer read at a local autozone. What kind of mileage do you have?

[hawkeyeblue]

diesel1962: Thanks for reply, mine is auto transmisson.

Headnsouth: Thank you too, I have 190,000 KM and sorry I dont know what is DTC is.

[Headnsouth]

DTC Diagnostic Trouble code

[dosser]

My 1994 Corolla, also a 1.6, gets 30-36 MPG. Have you checked for gas leaks? What color is your exhaust (white, blue, black)? Sorry, do not know what 6.5-7.5 KM is in MPG.

[hawkeyeblue]

Folks last night I checked my gas consumption again and it pretty decent 33.03 MPG in comparison to humiliating 16.95 MPG. You may wonder how it is possible or what I have done simple I changed both the O2 Sensors and that made the whole difference and not just better gas I feel clearly more power too.

Thanks for every one who contributed and tried to help

Drive safely