Guest traillooker Posted August 22, 2006 Share Posted August 22, 2006 I have been checking my millage over the past months and was averageing 17 to 18 MPG. Now all of the sudden it has droped to 10 to 12 MPG. My pathfinder is a 97 4wd with 120K miles. I have never replaced the front two 02 sensors. Could that be the problem? Link to comment Share on other sites More sharing options...
vengeful Posted August 22, 2006 Share Posted August 22, 2006 Do you have any Diagnostic Trouble Codes? Is your MIL illuminated? Link to comment Share on other sites More sharing options...
Guest traillooker Posted August 22, 2006 Share Posted August 22, 2006 I do not have any codes that I know of and there is no MIL illuminated. Link to comment Share on other sites More sharing options...
vengeful Posted August 22, 2006 Share Posted August 22, 2006 Then your O2 sensors are fine. Check the timing. Has the timing belt been replaced yet? Check and clean the fuel injectors, change the fuel filter, change the spark plugs, wires, distributor cap and rotor. Link to comment Share on other sites More sharing options...
Guest traillooker Posted August 22, 2006 Share Posted August 22, 2006 I have done all of these thing except wires. Link to comment Share on other sites More sharing options...
Guest traillooker Posted August 22, 2006 Share Posted August 22, 2006 One other thing I haven't done is clean the fuel injectors. Link to comment Share on other sites More sharing options...
vengeful Posted August 22, 2006 Share Posted August 22, 2006 How about the differential oil, transfer case oil, and transmission fluid? Link to comment Share on other sites More sharing options...
Guest traillooker Posted August 22, 2006 Share Posted August 22, 2006 Yes those have been done also. Did all of that myself. Link to comment Share on other sites More sharing options...
vengeful Posted August 22, 2006 Share Posted August 22, 2006 Has your driving style changed recently? Have you been doing more city than highway lately? Did you fill up with E85? Pathfinders are NOT flex-fuel vehicles and CAN NOT run properly on E85. Tire pressures all OK? Link to comment Share on other sites More sharing options...
zonianbrat Posted August 22, 2006 Share Posted August 22, 2006 How about your spare tire pressure??? Do you have any stickers? Link to comment Share on other sites More sharing options...
yar1 Posted August 22, 2006 Share Posted August 22, 2006 Check the timing. Has the timing belt been replaced yet? so poor mileage could be a sign the timing belt needs replacement? Link to comment Share on other sites More sharing options...
vengeful Posted August 22, 2006 Share Posted August 22, 2006 Absolutely Not. The timing belt gives no warnings before it breaks. Your odometer (and maintenance history) is the only sign that your timing belt needs to be replaced. It is due every 105k miles. However, if the timing is off, you will get poor fuel economy. Link to comment Share on other sites More sharing options...
90seven Posted August 22, 2006 Share Posted August 22, 2006 How about your spare tire pressure??? Do you have any stickers? How is this relevant? Haha Link to comment Share on other sites More sharing options...
vengeful Posted August 22, 2006 Share Posted August 22, 2006 How is this relevant? Haha He was being facetious. Link to comment Share on other sites More sharing options...
SaKaNa Posted August 23, 2006 Share Posted August 23, 2006 I just wanted to mention that I'm at like a record personally... I've gone 240 miles and still have 1/4 a tank of gas! And I was doing 85 MPH on I-76 with the full tank a few days ago! And I drive the thing like a sports car... Link to comment Share on other sites More sharing options...
vengeful Posted August 23, 2006 Share Posted August 23, 2006 That's pretty good. I was at 160 miles and 1/2 tank when I last glanced at it. Link to comment Share on other sites More sharing options...
max_stryker Posted August 23, 2006 Share Posted August 23, 2006 i get 150 to the tank....maybe if i drive nice and dont keep it in 1st 4lo all day long i can squeeze a lucky 200 out of it Link to comment Share on other sites More sharing options...
94extreme Posted August 23, 2006 Share Posted August 23, 2006 i get 150 to the tank....maybe if i drive nice and dont keep it in 1st 4lo all day long i can squeeze a lucky 200 out of it keep rpms under 3000 and the milage increases dramatically. Link to comment Share on other sites More sharing options...
navygz19 Posted August 23, 2006 Share Posted August 23, 2006 i get 150 to the tank....maybe if i drive nice and dont keep it in 1st 4lo all day long i can squeeze a lucky 200 out of it OMG that's horrible max...I couldn't afford that! Link to comment Share on other sites More sharing options...
max_stryker Posted August 23, 2006 Share Posted August 23, 2006 which is why my truck has been sitting for nearly 4 months and i drive the wd's around Link to comment Share on other sites More sharing options...
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