I read somewhere about holding down the odometer and turn the key to on and wait for a "Test" to show up. I forgot what this procedure do and wondering what it does?

 

We never did find some of the answers.....

Here is what we have so far -

01 / on / unknown
04 / on|off / drivers door open|door closed
08 / on|off / light sw on|light sw off
12 / oo / speedometer check
13 / oo / tachometer check
14 / oo / beeper check
16 / on (blinks 3 times) / low fuel light chk
18 / on (blinks 3 times) / unknown
22 /053 / unknown
23 /oo / fuel gauge chk
25 /oo / water temp gauge chk
all warning light check
50 / -- / unknown
51 / -- / "
31 /on|off / key in/out check

S

 

its also a way to reset the pcm or so ive been told. some people have claimed that by doing it they increased their gas mileage. i was testing that theory a few tanks ago and it seemed to be true. i went form 14-15 to 16-17 mpg around town. but i had a better increase by changing my driving style and shifting sooner around town. im even using 6th around town some- last refill 251.3 miles / 13.7 gallons = 18.34 mpg. thats still with some hard accelerations for fun and testing my new intake.

 

thanx alot, that sort it out

 

By "holding down the odometer needle" do you mean that button that we press to reset our "trip" meter?