1991 Cherokee 4.0 intermittent hesitating at low RPM
08-17-2009, 01:21 PM
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Model: Cherokee
1991 Cherokee 4.0 intermittent hesitating at low RPM
MY 1991 Cherokee hesitates sometimes at around 1k-2k RPM, other times it drives fine. I replaced TPS, ECU, plugs, plug wires, coil, distributor cap/rotor, Crank Position Sensor, MAP, Coolant sensor, fuel pump/filter, O2 sensor. Cleaned throttle body thoroughly. I ran the injectors into a bucket and all have clean bell-shaped spray. Theres no engine codes. Also I don't see any EGR controls.
Only thing left is idle air valve and distributor pickup.
Anyone know the cause?
Only thing left is idle air valve and distributor pickup.
Anyone know the cause?
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