ok. my friend have a 94 ls (automatic). she's been complaining about shitty mileage (around 180 miles every tank). i changed the spark plugs, checked the timing..everything seems good. what else could cause shitty mileage?

Jeff-

 

damn. 180 a tank is really shitty. I assume you checked the air filter and tire pressure as well. Maybe it is just the stop and go traffic?

 

i get about 180 to 240 a tank with my 94 auto.
depends on how hard i drive it.

 

fuel filter maybe.

 

going to check the air filter. fuel filter could be the problem too? its not throwing code or anything..

Jeff-

 

Also check your cap and rotor and possibly plug wires.

 

180 per tank: does that mean you are at 180 when the fuel light comes on? sometimes it comes on early, such as 180, and can go up to 260.

 

check her CAT...might be clogged.

 

O2 sensor...!
Almost definitely.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Si Integra &raquo;</TD></TR><TR><TD CLASS="quote">O2 sensor...!
Almost definitely.
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I agree. I think this might be it.

 

its not throwing a code tho.

so you think she should change both 02?

Jeff-

 

Does her car bog??? If it does she should change out the primary o2 sensor in her exhaust manifold

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Deluzional &raquo;</TD></TR><TR><TD CLASS="quote">Does her car bog??? If it does she should change out the primary o2 sensor in her exhaust manifold</TD></TR></TABLE>

But like he said, shouldn't that throw a code?

 

fuel filters dont throw codes... lol....wait, not that i know of. hah

 

i just added a header and new bosch o2 and i didnt even get 180 to my tank much worse gas mileage then before... didnt even get on it as hard as i normally do tried resetting the computer but no luck.. no idea what to do.. maybe the bosch universal pos is the problem
i have a 93 ex auto

 

Damn that really sux. Sorry to be a thread *****, but on my trip down to NC, I was gettin 35 miles to the gallon. All highway baby.

 

Sorry can't help but boost is killing my gas mileage. I was getting about 300 to the tank now its about 200.

 

usually the prob to poor gas mileage is always the most basic of stuff. plugs, wires, cap and rotor, and fuel filter.

 

Like everyone else says....check air pressure in tires and clean (or buy) your air filter.

 

mileage on the car? tire pressure? basic maintenance done? driving aggressive recently? time for a tune up!

 

My LS Auto gets shitty mpg also...

 

About a few weeks ago I went to the pump and filled her to the top. I have a 94 LS. After about two days I had to refill because I was at 1/4 tank. I was getting like 11 miles per galon. Like I was driving an H2 hummer. I check the everything. THe plugs are ok, filters, and everything else. When I check my fuel injection. And it was black as hell. I didn't even wanna try to clean it myself. I just took it to a local place had them do it for about 70 bucks. Afterwards. I was getting like 260 on ten gallons on a stock motor. Bro it's the fuel injections it must be dirty...

 

Give me a call asap. This **** is taking too long. I see you have time to post on H-T so I will be making a post about my expierence with you unless you can correct this situation by wed. Enough is enough. Chris

 

Dont' Change The Sensor! It's there to tell you that your car is having problem. Sounds like you just need to get a maintance if you have a poor gas milage. Depends if the car has high miles on it. Need to get your car Diagnose. And find out what's causing the sensor to come on. If you have a problem with a sensor use a digital multimeter and compare Spec's.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Xumarius &raquo;</TD></TR><TR><TD CLASS="quote">About a few weeks ago I went to the pump and filled her to the top. I have a 94 LS. After about two days I had to refill because I was at 1/4 tank. I was getting like 11 miles per galon. Like I was driving an H2 hummer. I check the everything. THe plugs are ok, filters, and everything else. When I check my fuel injection. And it was black as hell. I didn't even wanna try to clean it myself. I just took it to a local place had them do it for about 70 bucks. Afterwards. I was getting like 260 on ten gallons on a stock motor. Bro it's the fuel injections it must be dirty...

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I was wondering about that...I had mine tune up wit most everything changed including the fuel filter, but gas mileage still sucked!! I used some Valvoline fuel injector cleaner and no luck...do those bottled fuel injector cleaner work at all?? or should I let the shop clean them??