Poor Fuel Economy 1995 P/U

Marcus · Jun 25th, 2004, 11:57 PM

Recently I've noticed that the fuel consumption in my 95 Nissan Pickup has declined. Since my last fill I've gone 190 km and my gauge is telling me that that I have 1/2 a tank left. My question is what is the range of a 95 pickup 4
cyl with 5sp. What things should I look for that may cause poor fuel consumption?. Is it possible that my gauge is incorrect? Thanks

**88pathoffroad** · Jun 26th, 2004, 01:16 AM

Check the O2 sensor...if it's never been replaced, you'll probably want a new one. It could possibly be the summer gas you're getting now compared to the winter formulation gas they quit supplying around this time of year...

Marcus · Jun 26th, 2004, 02:15 PM

How much will new oxygen sensors cost? Are they hard to replace?

ncirish · Jun 26th, 2004, 06:43 PM

My 94 3.0 4x4 auto 102k gets about 23mpg on the highway (not mountainous but some hills), and get about 17 around town. I wish it had some more power (used to American engines) but the gas mileage is about what the factory sticker said.

Will · Jun 27th, 2004, 05:15 AM

I get a consistant 25 mpg(5 speed, rear wheel drive,velosity stacks and forced air induction). My question is on the summer gas, winter gas thing. Is that true? Anybody? My Grand Father retired from Standard Oil and my father worked for Standard and Marathon. I know that doesn't make me and expert,but it's the first mention I've ever heard of that.

**88pathoffroad** · Jun 27th, 2004, 09:23 AM

As far as I know it's true. In the wintertime, you get colder, denser air and your engine needs a little bit different formulation to keep running right. *shrug*

The O2 sensor is screwed into the exhaust pipe under your driver's seat if you have the V6, or somewhere in the exhaust along those lines for the 4-cylinder. Cost varies, mine was $135 from the dealer, none of the local auto parts stores carry the correct O2 sensor for my '88.

Will · Jun 27th, 2004, 10:51 AM

I guess I could understand it here in Michigan but what about Florida,California etc.

jadcock · Jun 27th, 2004, 12:41 PM

Some states implement a winter blend fuel for better tailpipe emissions. The vehicle usually runs WORSE on winter blend, since it usually contains more alcohol or MTBE in it (and thusly, less gasoline). Usually, if your fuel economy gets worse in the winter, this is why. Traditionally, states from Virginia north use a winter blend and North Carolina south do not. I don't know if that's still the case. I understand some states, like California and New York, use a "winter blend" all year 'round.