1999 Jeep Grand Cherokee Engine hesitation

1999 JEEP GRAND CHEROKEE
150,000 MILES • 4.7L • V8 • AWD • AUTOMATIC
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JUST EMPTY EVERY POCKET
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when I drive on the highway at around 50 to 60 mph my jeep will start to hesitate kind of like its miss firing or losing power, but it doesn't happen if im going slower that 50 or faster than 70
Sep 1, 2015 at 4:29 PM
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CJ MEDEVAC
  • ✓ASE Certified Mechanic
  • 11,004 POSTS
  • ASE Certified Mechanic
IS THE CHECK ENGINE LIGHT ON?

IF SO, THIS IS WHAT WE NEED TO CHECK OUT 1st.

WHEN IS THE LAST TIME YOU CHANGED THE FUEL FILTER?

COULD BE THAT ENOUGH FUEL IS MAKING IT THRU A DIRTY RESTRICTED FILTER TO MEET THE FUEL DEMAND AT THE LOWER SPEEDS, BUT WHEN YOU INCREASE THE SPEED, NOT ENOUGH FUEL CAN SQUEEZE THRU FOR THE INCREASED DEMAND

KEEP US INFORMED

THE MEDIC

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Sep 1, 2015 at 7:30 PM
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CJ MEDEVAC
  • ✓ASE Certified Mechanic
  • 11,004 POSTS
  • ASE Certified Mechanic
I RECKON I BLEW RIGHT OVER THAT "FASTER THAN 70" PART

DO YOU THINK THAT IT'S STILL DOING IT OVER 70, BUT SINCE THE RPMs ARE HIGHER YOU AIN'T PICKING UP ON IT AS MUCH?

THE MEDIC
Sep 1, 2015 at 7:34 PM
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