I bought my truck on Jan. 10th. It's a '98 Chevy 1500 4x4 with the 5.7 liter vortec. I love it. When i bought it, it was around 0 degrees F here for a long time. I noticed i was getting around 10 to the gallon and i was kinda pissed about that. But now it has warmed up to around 50-60 degrees fahrenheit, and it's been getting like 15 to the gallon in the city. Why does the temperature affect it so much? This never happened to any of my other cars...?
2007-02-25 13:42:23 · 5 answers · asked by Halls of Colours 2 in Cars & Transportation ➔ Car Makes ➔ Chevrolet
This may not be a direct answer but here's my little story.
1989 GMC truck . 305 engine, man trans.w/ T.B.I. .10 mpg no heat....o.k. so far?
Almost $1000.00,5 thermostats and 1 heater core later(they tried for a radiator too but I said no) I decided to live with the problem since it was a "to work truck".
Well 4 years later ,after suffering with poor gas mileage and freezing going to work for 20 miles one way...on a whim I decided to reinstall a missing heat tube that goes from the exhaust manifold to the snorkle of the air cleaner. Well what do you know!!! My truck warms up fast and hot,my mileage has improved to 15 mpg(my overdrive is bad so its a 4 gear now) and it cost me $3.00!!!!
I guess my point is that sometimes the high tech "parts replacers" at the dealerships have forgotten how to be a real true mechanic and diagnose a problem. Sometimes it can be a simple solution right in front of your nose.
I hope this is some kind of help to you.
Thanks for letting me vent!
2007-02-26 03:00:35 · answer #1 · answered by gittit 3 · 0⤊ 0⤋
1. winter gas is different than summer gas
2. cold air is denser, more air means you need more fuel to get the same a/f ratio
3. cold engines run rich til then are up to temp
some cars are more effected than others. my mazda dropped like 1 mpg. then my saturn went from about 30 to low 20s. so just like you im like where did my gas go?
2007-02-26 13:16:41 · answer #2 · answered by Anonymous · 0⤊ 0⤋
check the mass air flow sensor, it uses a element like a light bulb when current is passed across it it measures resistance due to temp. basicly the colder the air the more dense thus more gas needed. if its broke its a guessing game huh
2007-02-25 20:58:38 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Possibly the choke is stuck or not heating up properly. Check the choke fuse. Or it could be cold fuel making the injectors dribble too much fuel or leaking (if it's injected). You could try letting it warm up to normal temps before driving, too.
2007-02-25 17:45:15 · answer #4 · answered by Anonymous · 0⤊ 1⤋
hey if you would of bought a ford then you wouldnt have to worry about it just kiddin but the cold air that is being taken into the engine makes the engine colder making it use more fuel to warm up the engine
2007-02-26 01:24:26 · answer #5 · answered by Ranger_man2007 2 · 0⤊ 2⤋