low mpg=problem? - Mustang Evolution

Go Back   Mustang Evolution > 1979-2015 Mustang GT || Tech and Talk > 1996-2004 Mustang GT



Reply
 
Thread Tools Search this Thread
Please support our sponsors and let them know you heard about them here!
Old 04-11-2008, 06:44 PM   #1
Registered Member
Regular
 
maximus's Avatar
 
Join Date: Jul 2006
Region: Pennsylvania
Posts: 430
low mpg=problem?

So as i stated in another thread, my car has dropped a decent ammount of mpg in the past couple weeks. I just did an average at the pump and got something like 15.3 mpg. That is with short like 10 min drives to and from work where it is 50/50 highway-street. I dont think I have taken the tach above 3k accept to get onto the highway which it would have only seen up to 4k before a shift. Could there be like a vac leak or something dirty or anything that would cause me to get such crappy mpg? I don't know much about the mechanical part of our cars so any advice or ideas would be great.
__________________
maximus is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 04-11-2008, 06:51 PM   #2
Legacy Member
Legacy
 
Kiljosh's Avatar
 
Join Date: Oct 2004
Region: Pennsylvania
Posts: 1,282
Send a message via AIM to Kiljosh
Re: low mpg=problem?

You can try resetting the computer so it will learn everything over again since the weather has started to change.

Clean the Mass Air sensor, run some fuel system cleaner through it, change to a lighter oil, check tire pressure. Air filter might be dirty from winter check that. Maybe the fuel filter clogged up.

No exhaust leaks?

Long shot is the car is running rich and burning through too much gas, cats are clogged up, o2 sensors failing(but with no CEL it's doubtful), bad gas.

Lots of stuff can cause bad gas mileage.
__________________
Kiljosh is offline   Reply With Quote
Old 04-11-2008, 07:06 PM   #3
Registered Member
Regular
 
maximus's Avatar
 
Join Date: Jul 2006
Region: Pennsylvania
Posts: 430
Re: low mpg=problem?

^ yea i know, just wondering if there was anything i could check w/o taking it somewhere to get someone to do a full on tune up on everything. Is there an easy way to check if I have an exchaust leak? I just checked the air filter last week and it was still decently clean. I have a chip and tune so I don't think it could be running rich. If its bad gas, ive been getting crappy gas for a while cuz ive been getting around 15-16 mpg for a couple weeks now. only have about 34k on it too.
__________________
maximus is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 04-11-2008, 07:18 PM   #4
Moderator Emeritus
Legacy
Regular
 
SpectorV's Avatar
 
Join Date: May 2003
Region: Alabama
Posts: 26,049
Send a message via AIM to SpectorV
Re: low mpg=problem?

short drives like that where the engine barely gets warm is probably the reason.
__________________
2003 Cobra Vert (Redfire) #3938 of 5082 @ 05/27/2003
472rwhp/493rwtq -Modification List - Dyno Sheet
2012 Mustang 3.7L M6 (Kona Blue)
2011 Ford Edge Sport (Red Metallic)
SpectorV is offline   Reply With Quote
Reply

Lower Navigation
Go Back   Mustang Evolution > 1979-2015 Mustang GT || Tech and Talk > 1996-2004 Mustang GT

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Average MPG tigerfan2771 Pre-2005 V6 Mustang 20 04-21-2010 09:33 PM
MPG maxwelmurder Pre-2005 V6 Mustang 15 04-04-2009 11:06 PM
Looking for a set of low low ratio 7.5" gears PureVenom Pre-2005 V6 Mustang 4 08-13-2008 05:15 PM
42.6 mpg whipster24 The Bar 17 07-08-2007 04:12 PM
03 Gt Pi Heads And Cams!!!! Low Miles/low Price alwaysthefinest Mustang Parts for Sale and Wanted 1 05-24-2007 06:17 PM

» Like Us On Facebook



01:08 PM


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0

MustangEvolution.com is in no way associated with or endorsed by Ford Motor Company.