fuel milage problems

[poker_irwin]

Hi everyone,

Has anyone had fuel mileage problem with there 07 titan? I bought mine last year and was getting great mileage with it on the interstate, and now that i have some miles on it im not getting that great of fuel mileage.

[rattlecan]

Yup.

I was going to ask the same thing...

I bought my '07 new in July of 07. I've got just at 15K on it. Oil is always synthetic, air filter changed every 5K or so (I live off of a gravel road), tires always above 30lbs, etc.

When I first bought the truck I would get 18mpg on a regular basis. ALL of my commute is highway, but I keep it under 65mph. I've been getting 14 or so lately.

What's interesting though... I had a heater problem and didn't know it until the weather turned... I think I had it fixed in September or so. The heater would not blow warm air. After the dealer fixed a 'return hose' (the fix was very vague) my mileage has been on the decline.

I was thinking about switching to K+N and unhooking the battery for an hour or so for everything to reset... But I shouldn't have to do this to get my truck back to 'normal' mileage.

I called the dealer to ask about the problem, and they brushed me off.

[bbomar]

Resetting your ECU

Resets to factory settings. Also clears some error codes that pop after a CAI or Stereo install.

Give it a try, but be patient....it may take a couple (or more) tries with your stopwatch to get it right.....timing is extremely important here!
Timing is extremely critical. If it is NOT DONE within the specify time, the ECU will not reset and the Check Engine Light (CEL) will continue to remain ON. A stop watch or an analog clock with a second’s needle will be useful.

Operations Procedures

1. Confirm that accelerator pedal is fully released, turn ignition switch “ON” and wait 3 seconds.
2. Repeat the following steps (2a and 2b) procedures quickly five times within 5 seconds.
a. Fully depress the accelerator pedal (HARD).
b. Fully release the accelerator pedal.
3. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 10 seconds until the CEL starts blinking.
4. Fully release the accelerator pedal (while the CEL is still blinking)
5. Wait about 10 second.
6. Fully depress the accelerator pedal and keep it for more than 10 seconds.
7. Fully release the accelerator pedal (The CEL light will continue to blink).
8. Turn ignition switch to “OFF” position and now you can start the car. The CEL light should be gone.
9. If the CEL light continues to remain ON, repeat the above steps. Timing is EXTREMELY critical to resetting the ECU.

Reset the AirBag light (For you audio installers)

1. Turn the key from off to on.

2. Watch the airbag light closely. It will stay on for a few secs. and then as soon as it blinks off (the start of the flashing), turn the key off instantly.

3. Count to 5 (1 Mississippi, 2 Mississippi . . . .)

4. Repeat steps 1-3 two more times until you have done the cycle three times.

5. Now turn the key on and watch the light. It will start blinking in a different, slower manner. This is diagnostic mode. You can watch this for a little while, no hurry.

6. Now turn the key off again, Count to 5 like in step 3 again, and turn back on. If the procedure worked, the airbag light will not be flashing.

If it does not work the first time, just repeat the steps again.