Question about the overhead computer
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Question about the overhead computer
I have a quick question - I have a '04 X - It has the 44 gal unleaded tank in it, My question is everytime I fill up it say 398 miles tell emtpy. And I am only putting in 38-39 gals each time. Is any way to fix this?
Master of Strokes
Joined: Mar 2007
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Posting Guru
Joined: Aug 2006
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From: High Point, NC
It's my understanding that the computer calculates mileages over the last 500. I believe that if you disconnect the neg battery terminal and then turn on the headlights (this disipates any residual power) - let it sit for about 15 minutes, then turn off the headlights and reconnect the batt terminal. This should reset the PCM back to scratch. For the next few miles, you'll notice that the tranny will shift a little firmer while the PCM's 'Adaptive Technology' re-learns your driving style. During this time, drive as normal as possible.
Few other points - I do this procedure everytime I change the air cleaner, clean the MAF or change the fuel filter.
Also - you may want to write down all of your radio station pre-sets... they will be lost.
Few other points - I do this procedure everytime I change the air cleaner, clean the MAF or change the fuel filter.
Also - you may want to write down all of your radio station pre-sets... they will be lost.
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Mountain Pass
Joined: Nov 2005
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From: moreno valley calif
after you reset the computer..it will start where you are...i think......the miles to empty will change over time also..if you go 15 miles per gallon..after a time the computer will reflect it..maybe..
Postmaster
Joined: Jul 2006
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Yeah. But that's because you have the magical diesel engine which is 50 times better than a V-10
and has enough torque to pull a fully loaded aircraft carrier uphill in 24" of snow!
and has enough torque to pull a fully loaded aircraft carrier uphill in 24" of snow!
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