restoring factory economy to honda civic vx
i have a 92 civic vx , the fuel economy is about 32.5-37.5 with a 5 to 1 city/highway , i would like to get this average to about 38-40 ala factory specs
since i bought the car last winter have replaced - new oem fuel pump - new oem fuel filter - new braided fuel line - cleaned and remapped oem fuel injectors - new oem fuel regulator return valve - new oem spec ngk spark plugs gaped perfectly - new ngk coilpack/cables - new distributor - new oem timing belt - new oem water pump - new temperature sensor - new ecu - new oem iacv - new battery - new axle back exhaust - new intake filter - new driver side axle - throttle body thoroughly sprayed with throttle body cleaner - tires 42psi+ - egr "scraped" new gasket even with all these "refreshments" i can still feel the power cut out or "sputter' for a mili-second when cruising at highway speeds i feel like this maybe directly related to my lack luster economy the 02 censor looked brand new when i bought it , the only thing i can think of that i havent replaced yet - egr -cat converter -new front brakes and wheel bearings to reduce rolling resistance if there and any other suggestions for things that i missed to get my fuel economy where i want it that would be much appreciated.... |
Did you max out the tire pressure yet?
|
Quote:
I would strongly recommend cleaning the egr valve and passages. Lean burn Hondas tend to clog those up. |
Quote:
|
Quote:
fyi brand new egr from napa here in canada is $550 but only $200 at advance auto in states for the exact same egr.... |
Quote:
Any VX experts on here seeing this? Is this just lean burn? |
That's exactly what it feels like with my healthy Insight engine.
And, for what it's worth, now that the weather is getting cold, I'm seeing 45-55mpg city trips, whereas I can get 100+ on the highway in summer. Those numbers sound fine for a VX driven in the city in this season. |
Quote:
Quote:
|
Definitely sounds like lean burn transition.
Since you seem to like spending money, invest in an AEM Wideband air-to-fuel ratio gauge. They are about 200 new, but can be had for 80-120 used. Install it before the catalytic converter, this will tell you exactly when you are going in and out of lean burn, not to mention if anything ever goes wrong you will see it immediately. [Edit]: Your economy seems typical. Vancouver is really, really cold isn't it? Anything below 70F (forget what that is in 'C'ommunist units) will start impacting economy very quickly. [Edit of an edit]: What tires are you running? That can also make a huge difference in economy. |
Park on a grade, engine off in neutral. Release the brake and assess how easily it rolls. Listen carefully for scraping or grinding noises.
If you can put it on a lift, give each wheel a spin and count the revolutions for comparison. Consider whether your front brakes have or should have retractor springs. |
All times are GMT -4. The time now is 09:14 AM. |
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com