I'm still getting bad mileage after tune-up. - Insight Central: Honda Insight Forum
 
Go Back   Insight Central: Honda Insight Forum > 1st Generation Honda Insight Forum > MPG Issues

Insightcentral.net is the premier Honda Insight Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools
Old 05-08-2011, 04:40 PM   #1 (permalink)
Senior Member
 
Join Date: Jul 2010
Location: San Diego, ca
Posts: 220
Default I'm still getting bad mileage after tune-up.

I've been getting an avg of 53 mpg round trip 50 miles to my college and back. I've so far changed sparks, cleaned the throttle body, the map sensor, egr valve, changed oil with the best amsoil synthetic, ran seafoam through brake booster, used the techron fuel system cleaner, and lucas fuel system cleaner.

I've done some other stuff just need to remember. So far I'm just getting 53.5 mpg and getting into lean burn is much harder then I though even with a light foot all the time. Running the tires at 42 psi all around as well. Any ideas?

I have a 2000 manual insight.

Last edited by vmirjamali; 05-08-2011 at 05:39 PM.
vmirjamali is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 05-08-2011, 05:33 PM   #2 (permalink)
Eli
Moderator

 
Eli's Avatar
 
Join Date: Nov 2007
Location: Portland, OR
Posts: 6,897
Send a message via AIM to Eli Send a message via MSN to Eli
Default

Most likely it's just your environmental conditions.

Is this on the highway? What speed? Where do you live?
__________________
Bumblebee Batteries, LLC - Helping your hybrid get from point A to point Bee!

Home of the BeeMax performance IMA battery.

503-730-8786

To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.


Bumblebee Hybrid Fleet:
2000 MT Insight @ 250k; 2001 MT Insight @ 475k; 2001 MT Insight @ 160k; 2001 MT Insight @ 201k; 2003 MT HCH @ 160k; 2006 CVT HCH2 @ 205k; 2007 CVT FEH @ 210k; 2010 CVT Insight2 @ 191k; 2001 MT Insight @ 182k.
Eli is offline   Reply With Quote Quick reply to this message
Old 05-08-2011, 05:36 PM   #3 (permalink)
Senior Member
 
Join Date: Jul 2010
Location: San Diego, ca
Posts: 220
Default

This is mix of city/highway. On highway I get 58-60 or so. Weather now in san diego is 78 degrees, speed is pretty slow too be honest, but it depends. I keep speed limit at all points of time, meaning 65-70 highway most the time.

My battery is weak, do you think that's the cause?

Last edited by vmirjamali; 05-08-2011 at 05:39 PM.
vmirjamali is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 05-08-2011, 06:19 PM   #4 (permalink)
Senior Member
 
Join Date: Oct 2008
Location: texas
Posts: 1,761
Default

are you sure you are getting lean burn? recently my primary a/f sensor went bad, so I have not been getting any lean burn, and have been getting mpg similar to yours. (55-60mpg)

The way I tell if I get lean burn is if when the mpg bar sorta sticks to around 75mpg even when you are pushing the throttle, and when you push it too far, it falls out of lean burn and goes to 50mpg.

at the moment, with my bad o2 sensor, it seems like it does leanburn, but I dont think it really is, because when you let off the throttle a little the bar does go above 100mpg, but when you re-apply some throttle while the bar is going down, it doesnt hang at 75-80mpg, but instead just goes smoothly all the way down to 50mpg.

but your speeds are a little high. For going 65-70mph, I'd say around 60-65mpg is normal. For driving 55-60mph, I usually see 75mpg.
__________________
Hello
To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.
02insight is offline   Reply With Quote Quick reply to this message
Old 05-08-2011, 06:38 PM   #5 (permalink)
Senior Member
 
Join Date: Jul 2010
Location: San Diego, ca
Posts: 220
Default

I actually have had times in the last 1k miles where i've hung around in the 75 mpg or 100 mpg zones for a good 2-3 minutes. Does that mean my 02 sensor and fuel/air sensors are working or do you think that's the issue? I thought that may be the issue so i cleaned the o2 sensor a bit, but it didn't do much. Note though when i let go of the peddle and then press on the gas it immediately drops out of lean and goes down quite a bit to like 45-55 range.
vmirjamali is offline   Reply With Quote Quick reply to this message
Old 05-08-2011, 06:59 PM   #6 (permalink)
Senior Member
 
Willie Williford's Avatar
 
Join Date: Mar 2003
Location: Campo, Ca.
Posts: 9,454
Default

Sounds and acts like "lean burn" is normal to me. Where in SD are you at? Terrain will have a hugh impact. What routes are you taking to college and back.
Would you like to get a few SD? Insighters together for a comparasion run?

Willie
__________________
01 MT "Little Red Rocket"
The first "TURBOCHARGED" Hybrid, Insight G1-(01/2003)@65K miles. RIP 334K
MaxIMA Battery (Serial #2), on 8/25/12 @ 301,000 miles
Another MaxIMA Battery, on 6/25/17 @ 399,252 miles
Use: 438,000 mi. @ 58.2 LMPG.



To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.
Willie Williford is offline   Reply With Quote Quick reply to this message
Old 05-08-2011, 07:52 PM   #7 (permalink)
Senior Member
 
Jivko57's Avatar
 
Join Date: Nov 2009
Location: Central NJ
Posts: 811
Default

weak battery may cause your car to recharge at all times, at this speed and bad battery I was getting similar mileage.. With grid charging at nights and slowing down to-50-55 miles on the Highway I get ~75mpg.
__________________
2000mt with replaced engine at 370k + a rolling shell
Jivko57 is offline   Reply With Quote Quick reply to this message
Old 05-08-2011, 09:47 PM   #8 (permalink)
Senior Member
 
Join Date: Jul 2010
Location: San Diego, ca
Posts: 220
Default

You know what it may be my battery. I'm building a grid charger together, and it should be done tommorrow, when i first bought my car and used a normal 12v charger (it charged the 12v and insight's ima battery at the same time oddly) I got 75 mpg, which is odd, since I haven't been able to get that since the charge I'll keep you updated!

Btw I'm located near poway, ca. My routes are mostly the I-15 down to downtown and back.
vmirjamali is offline   Reply With Quote Quick reply to this message
Old 05-08-2011, 11:32 PM   #9 (permalink)
Eli
Moderator

 
Eli's Avatar
 
Join Date: Nov 2007
Location: Portland, OR
Posts: 6,897
Send a message via AIM to Eli Send a message via MSN to Eli
Default

It sounds like it may be your battery, yeah.

Unless your engine is throwing codes, I wouldn't worry about things much since you've taken care of the basics. It would tell you if your O2 sensors were on their way out.
__________________
Bumblebee Batteries, LLC - Helping your hybrid get from point A to point Bee!

Home of the BeeMax performance IMA battery.

503-730-8786

To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.


Bumblebee Hybrid Fleet:
2000 MT Insight @ 250k; 2001 MT Insight @ 475k; 2001 MT Insight @ 160k; 2001 MT Insight @ 201k; 2003 MT HCH @ 160k; 2006 CVT HCH2 @ 205k; 2007 CVT FEH @ 210k; 2010 CVT Insight2 @ 191k; 2001 MT Insight @ 182k.
Eli is offline   Reply With Quote Quick reply to this message
Old 05-08-2011, 11:54 PM   #10 (permalink)
Senior Member
 
Willie Williford's Avatar
 
Join Date: Mar 2003
Location: Campo, Ca.
Posts: 9,454
Default

Vmir;
Then you've got at least 6 long grades to pull (there and back) so your avg. mpg is about right.
Don't think the 12V charger can charge both batteries at the same time.?

HTH
Willie
__________________
01 MT "Little Red Rocket"
The first "TURBOCHARGED" Hybrid, Insight G1-(01/2003)@65K miles. RIP 334K
MaxIMA Battery (Serial #2), on 8/25/12 @ 301,000 miles
Another MaxIMA Battery, on 6/25/17 @ 399,252 miles
Use: 438,000 mi. @ 58.2 LMPG.



To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.
Willie Williford is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Insight Central: Honda Insight Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Location (Required)
Where you live
Insurance
Please select your insurance company (Optional)

Log-in


Thread Tools

Posting Rules
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On


Powered by vBadvanced CMPS v3.2.3

All times are GMT -4. The time now is 12:16 PM.



Powered by vBulletin® Copyright ©2000 - 2019, vBulletin Solutions, Inc.
User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.