mpg question
#1
Senior Member
Thread Starter
mpg question
OK, my 2000 f150 with the 5.4 4x4 is getting 10mpg. I know that's crazy low since I drive 80% Highway. Stock ride height, stock size tires, 265/70/17 running 35psi, I baby it a majority of the time. Don't have any cel codes, minus the 02 sensor.
Things wrong with my truck: exhaust leak at the passenger manifold, no cats. I know it should still be better than 10mpg.
Any tips on fixing the manifold? It's my only vehicle and I'd like to get it done in one day or less.
Things wrong with my truck: exhaust leak at the passenger manifold, no cats. I know it should still be better than 10mpg.
Any tips on fixing the manifold? It's my only vehicle and I'd like to get it done in one day or less.
#4
Senior Member
1. Replace the manifold if its cracked. Careful with the bolts, they break off in the head easily. Soak them with PB blaster the day before you pull them.
2. Replace your front o2's if bad
3. Get a tuner (SCT from MPT includes custom tunes) and disconnect rear o2's if you have no cats. They can make a custom tune for the deleted o2's.
Guaranteed you'll pick up 3-5 mpgs at a minimum.
Also, your current issues will cause it to run rich. Listen to carcrazygts2. Dude is solid.
2. Replace your front o2's if bad
3. Get a tuner (SCT from MPT includes custom tunes) and disconnect rear o2's if you have no cats. They can make a custom tune for the deleted o2's.
Guaranteed you'll pick up 3-5 mpgs at a minimum.
Also, your current issues will cause it to run rich. Listen to carcrazygts2. Dude is solid.
#6
Senior Member
Thread Starter
I'm actually considering having a shop fix the mani leak. I know it's just the gasket as I've seen a chunk of it hanging out when I had it up on the lift at work. I just don't want to break a bolt off in the head and screw myself. Shop rates are around 230 bucks a side.