Last post on Mar 16, 2003 at 10:17 PM
You are in the Maintenance & Repair - Archived Discussions
This discussion is ARCHIVED. To reactivate the discussion, post a request in the Lost? Ask the M&R Host for directions! discussion.
What is this discussion about?
Feb 11, 2003 (10:50 am)
How is tire pressure?
Is this a stickshift or automatic?
#9 of 11 fuel filter
Feb 28, 2003 (4:04 pm)
no, no, no... You don't want to change a fuel filter on a prizm. I had '98 prizm (should be pretty much the same as 2002) and was trying to do it ones. The owners manual shows fuel filter replacement as part of the recommended services. Chevy (or Toyota) managed to locate it somewhere inside the fuel tank. To change the filter you need to take off the fuel tank and whole bunch of parts next to it. It costs about $400+ to do this!!! I went through 3 dealers and 5 independend shops and eventually got a copy of manufacturer's memo to the dealers that it doesn't need to be changed... ever. Doesn't make much sense to me, but that's what it said.
#10 of 11 Ok, milage improved when weather got warmer. WHY?
Mar 13, 2003 (1:39 pm)
I posted a long list of stuff in the Prizm forum. Here's a cut just to the milage section
2) i have a 2002 prizm. it's 9 months old w/18k miles.
i went from 35mpg to 25mpg on highway in 1 tank in january. i've changed the oil, fuel filter, and used different gas stations. tire pressure at manufacturer specs. nothing worked. Dealer says diagostics checked out fine and didnt have any explanation.
it was like that for 2 months (till this week), where i'm getting 32mpg now. the only thing i can think of is that the weather has been constantly warm this week (hi 50's).
a) i dont remember the temp in dec/jan, but i'm assuming that it was cold before and after my milage drop. if so, WHY DID IT DROP? And why did it drop SO SUDDENLY?
b) if the week that my milage dropped was because it was colder and stayed colder till this week, WHY DOES MILAGE DROP IN COLD TEMPS? and anybody have a continuous 30% drop?
3) What does a hood deflector do? it is like those bug shields on pickups? Anybody have a pic of a hood deflector mentioned in #615? THX
#11 of 11 Reply to ANON70
Mar 16, 2003 (10:17 pm)
ANON70: Been reading your msgs. You've had your prizm for only 8 mos and sounds like you really want to care for it. A drop of 30% in gas mileage isn't unusual in cold weather--especially in January. Not sure where you live, but here in the mid-atlantic, we've been freezing all winter, and yes, your car will eat up gas exponentially faster as temps drop below the freezing mark. I won't get into the specifics, but a cold engine needs more gas to warm it up. Notice how it remains at high rpms longer during the cold start-up? It's also no coincidence you mileage improves tremendously once temps go over 50 degrees. Bottom line: I doubt there's anything wrong with your gas mileage. BTW, you mentioned you changed your fuel filter (do u mean oil filter?). The fuel filter is inside the gas tank and does not require replacement under normal use--especially since your car is still relatively new. Good luck with your prizm. My '95 Prizm is at 147k and going strong.