I'm having gas mileage issues....

[cavaliers60]

a little over 87,000 miles on her.

[freakout]

o2 in the exhaust 1 before the converter and 1 after. Not sure but the rear 1 might be just to tell if the converter is working.

[Vinman]

Hows your heat? If its crappy, the water pump could be related to the piss poor fuel mileage...This affects mileage by having the engine working much harder than it has to (using more fuel) I have this problem, and I don't smell unburned fuel, but i do have a small leak (its a wee bit complicated to explain)..which turns out, is coming from the pump...And, If an O2 sensor is bad, the check engine light should be on..not always but most of the time




I've got a water pump and fuel filter waiting to be put in, just a matter of waiting for a "warm" day to do it.

[cavaliers60]

The water pump isn't that old. I replaced it at 70,000 miles. So it couldn't be that.... However, when replacing the water pump, my tension pully is loose now. It's tightened down as far as I can get it, but it wobbles around a little bit like it's loose... If you don't understand what I mean, I can go out and take a short video clip of it. lol

[black]

try the seafoam.

worked for me.

[TheEdgeofSanity]

um. i have the same problem but not really. over summer, i was getting 25-27 mpg and over the last 3 fillups, i've been getting 18-19 mpg. my car does smell like its running rich but no idiot lights are on. does the traction control use extra gas? i've been driving alot in snowy conditions lately.

also, i've never changed my fuel filter nor do I think the previous owners did. How does that wreck fuel economy?

[Gr1m]

^ winter blend gas

[Ryan from Ohio]

Im with Edge here. Same situation exactly and in the same region.

[whiteliquid]

I've been getting the terrible gas mileage too. And my car smells like its running really rich as well.

Im getting 16-18 mpg now

[Redog]

How cold is it there?

Last week it was in the teens and single digits here and my Car was running a little rich.

My old car (92 Cougar) only got like 7 to 10 MPG with the Ford 3800 when the temp dropped below 15*

[FrankTheTank]

Originally Posted by cavaliers60

I was thinking that too.... I haven't changed mine since I bought the car so I really don't know how old mine is.... How much would it cost if it does need to be replaced? And would I be able to do it myself?

see this thread...
http://www.aleromod.com/forums/showthread.php?t=20721

[Ryan from Ohio]

Its been in the mid teens to 20's here.

[TheEdgeofSanity]

its been anywhere from single digits to the low 30's here

[Steven01]

Here In Winnipeg Its Been Like -18 to -28s And with a windchill of like -35 :O

[CarCrazyMike82]

I have been wondering about gas mielage too. I have been consistently getting about 21mpg and just over 300kms per tank. I saw a pic of the original window sticker for an alero and it said mileage was rated at 20/29 so I dunno.

[pimpalero2003]

300 k 300000 a tank damn i want that

[freakout]

The pulley that is loose could cause your problem. Same as Vinman with the water pump. It's taking more power to turn the bearing in that pulley. Change this before it's busts and leaves you sitting with a possibly overheated motor.

[cavaliers60]

The Belt Tensioner hasn't really caused any major issues except for bad gas mileage if that's what it's doing.... It just makes a rattling noise every once in a while.... I'll get one when I get the money for it. I've been planning on getting it replaced..

[InFaMoUs_ALERO_210]

Originally Posted by cavaliers60

The water pump isn't that old. I replaced it at 70,000 miles. So it couldn't be that.... However, when replacing the water pump, my tension pully is loose now. It's tightened down as far as I can get it, but it wobbles around a little bit like it's loose... If you don't understand what I mean, I can go out and take a short video clip of it. lol

dude be careful with that tension tensor cause mines camed off after i changed the water pump but if it gives you dat problem just replace it, i replaced mines with one that has a stronger spring inside so it woulnt wablle i bougt it in autosone for like 30 bucks but it might be cheaper i bought mines cause it was an emergenzy lolz...

[CharleyO99Alero]

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Cav ... besides what others have mentioned, you will probably also need a new belt if that tensioner goes out completely as the belt will probably get damaged.

The longer you wait to fix it, the more likely it will cost you more.


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