04-13-2018, 07:45 AM
sure that air can, suck in and cool the EGRT sensor.
19mpg is not super bad, but I don't like it. depends on how car is driven, (heavy right foot?)
24 to 28 mpg is common, for sure not too fast cruising, mine got gets you 28. (IN A 91' and the 96)
Vacuum leaks will not cause poor MPG. unless.
the leak is hear the O2 sensor. (exhaust sucks air between putts)
plenum leaks do not cause poor MPG EVER, at the PLENUM and for sure if IDLE RPM is at 800 hot.
after all stepping on the throttle pedal is huge vacuum leak (giant leak and max at WOT)
EGR plunger, is a diaphragm. It must not suck air to the #4 intake tunnel. ever, by any means, there. gaskets bad etc. or EGR cracked in half or any other breaches there.
MAP READS WRONG,
poor MPG.causes.:
fuel pressure too high.
leaking injector.
misfire.
in limphome mode.
02 , has leaks near by, exhaust manifold cracks sucking air making o2 go nuts.
driven line friction(as you saw) after all if you can't push the car by hand, in flat garage, the engine will struggle too.
brakes dragging.
4wd locks hubs stuck and rusted SOLID, so they drag all that extra gearing around doing nothing but wasting fuel, (2mph lost?) so remove the locks and drive. see if fixed.
5 speed box has issues, but that is driveline issues. bearings, mostly.
transfer case same answer,
oversized tires (monsters)
The odometer is fibbing, check it again GPS. ( many causes here)
not getting gas tank full each time the same amount. (can be 2 gallons different)
not averaging 3 tanks of fuel, to get a better reading. due to fill up variances.
http://www.fixkick.com/MPG.html
19mpg is not super bad, but I don't like it. depends on how car is driven, (heavy right foot?)
24 to 28 mpg is common, for sure not too fast cruising, mine got gets you 28. (IN A 91' and the 96)
Vacuum leaks will not cause poor MPG. unless.
the leak is hear the O2 sensor. (exhaust sucks air between putts)
plenum leaks do not cause poor MPG EVER, at the PLENUM and for sure if IDLE RPM is at 800 hot.
after all stepping on the throttle pedal is huge vacuum leak (giant leak and max at WOT)
EGR plunger, is a diaphragm. It must not suck air to the #4 intake tunnel. ever, by any means, there. gaskets bad etc. or EGR cracked in half or any other breaches there.
MAP READS WRONG,
poor MPG.causes.:
fuel pressure too high.
leaking injector.
misfire.
in limphome mode.
02 , has leaks near by, exhaust manifold cracks sucking air making o2 go nuts.
driven line friction(as you saw) after all if you can't push the car by hand, in flat garage, the engine will struggle too.
brakes dragging.
4wd locks hubs stuck and rusted SOLID, so they drag all that extra gearing around doing nothing but wasting fuel, (2mph lost?) so remove the locks and drive. see if fixed.
5 speed box has issues, but that is driveline issues. bearings, mostly.
transfer case same answer,
oversized tires (monsters)
The odometer is fibbing, check it again GPS. ( many causes here)
not getting gas tank full each time the same amount. (can be 2 gallons different)
not averaging 3 tanks of fuel, to get a better reading. due to fill up variances.
http://www.fixkick.com/MPG.html
http://www.fixkick.com