View Single Post
Old 12-14-2010, 11:40 PM   #1 (permalink)
EcoModding Lurker
Join Date: May 2010
Location: lawton ok
Posts: 81

nadia - '03 ford mustang mach1
90 day: 18.47 mpg (US)

Jasper - '11 ford f150 xlt ecoboost
90 day: 18.71 mpg (US)

Festy festiva - '91 ford festiva L
90 day: 55 mpg (US)
Thanks: 4
Thanked 10 Times in 8 Posts
Improving idle consumption / testing

I have been wanting to test out theories on how to improve the fuel efficiency of my motor at idle. Obviously with most aeromods you test while driving. My mods to try are listed here:

Idle reduced from 850 RPM down to 650 if it will still idle consistently
powersteering bypass belt
4 amp electric water pump instead of belt driven
no belt at all which means no PS, AC, or Alternator being driven.

The thing I want feedback on is the testing. This is my thought.

Let the car come up to full temperature with the low speed fan on (180 F)
Set the high speed fan to come on at (210), (it wont reach this ever)
Radio on, lights off
Use my ultragauge and measure gallons per hour.
Record the high reading, and low reading over the course of one minute with the ultragauge.

Do my modifications and try again.

My car fluctuates about .10 gallons per hour. I figure recording the high and low and then averaging should tell me whether it improved at all.

Any thoughts?

Reasoning behinds these mods is that they are already being used on my car or awaiting installation. Now i just want to see whether they actually helped at idle. a-b-a testing can happen later. If they help at idle, it is likely they will help even more driving.

  Reply With Quote