1991 Jeep Cherokee 91 Jeep

DEREK123

MEMBER
1991 JEEP CHEROKEE
6 CYL
4WD
MANUAL
21,500 MILES

I have a 91 jeep cherokee laredo it drives great around town but when I start to head out of town and get to like a 20 or 30 mile sdistance it starts to sputter a little bit then it seems to lose all power like you can press on the gas but it dosent want to go far at all but I can pull over and turn it off and let it sit for about an hour and the start it back up and it drive great I hyave changed the distributer pick up unit and the coil do you have an idea what coud be causing this problem

Wednesday, July 1st, 2009 AT 9:07 PM

1 Reply

RASMATAZ

MECHANIC
75,992 POSTS

Dirty fuel injectors (cleaning the injectors often fixes this).
Bad MAP (manifold absolute pressure) sensor
Bad TPS (throttle position) sensor
Bad or dirty MAF (mass airflow) sensor
Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
Bad gasoline (fuel contaminated with water or too much alcohol)

Sometimes, what feels like a hesitation is actually ignition misfire rather than lean misfire. The causes of ignition misfire may include:

Dirty or worn spark plugs
Bad plug wires
Weak ignition coil
Wet plug wires

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Wednesday, July 1st, 2009 AT 9:17 PM