XJ engine trying to launch into space
#1
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Location: North Atlantic - Delaware
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Year: 1999
Model: Cherokee
Engine: Inline 6 4.0
XJ engine trying to launch into space
I'm almost at a loss over here. My XJ needed a new head gasket. I replaced the gaskets water pump inlet tube hoses, and other small stuff. Went to start her and it flung straight to 2500+ RPM. I quickly shut it off and inspected. I've connected, disconnected the TPS MAPs and IAC. I had codes 505, 123 and 108. I replaced the TPS and MAP. Now I only have 123 which is TPS HIGH VOLTAGE. I can't figure this out. She runs to 2500 and doesn't want to come down. What could I be missing?
#2
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Year: 1994
Model: Cherokee
Engine: 4.0 I6
I'm almost at a loss over here. My XJ needed a new head gasket. I replaced the gaskets water pump inlet tube hoses, and other small stuff. Went to start her and it flung straight to 2500+ RPM. I quickly shut it off and inspected. I've connected, disconnected the TPS MAPs and IAC. I had codes 505, 123 and 108. I replaced the TPS and MAP. Now I only have 123 which is TPS HIGH VOLTAGE. I can't figure this out. She runs to 2500 and doesn't want to come down. What could I be missing?
#3
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Year: 1999
Model: Cherokee
Engine: Inline 6 4.0
How would I adjust it? I took it out and cleaned it up with throttle body cleaner. Didn't replace, just out clean and in.
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#9
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Year: 1999
Model: Cherokee
Engine: 4.0
P0123-THROTTLE POSITION SENSOR VOLTAGE HIGH
When Monitored: With the ignition on and battery voltage above 10.4 volts.
Set Condition: Throttle Position Sensor voltage at the PCM goes above 4.5 volts for 3.2
seconds.
POSSIBLE CAUSES
THROTTLE POSITION SENSOR SWEEP
INTERMITTENT CONDITION
THROTTLE POSITION SENSOR SIGNAL CIRCUIT SHORTED TO 5 VOLT SUPPLY CIRCUIT
THROTTLE POSITION SENSOR SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE
THROTTLE POSITION SENSOR INTERNAL FAILURE
SENSOR GROUND CIRCUIT OPEN
THROTTLE POSITION SENSOR SIGNAL CIRCUIT OPEN
PCM
~~~~~~~~~~~~
TPS Tests:
.
When Monitored: With the ignition on and battery voltage above 10.4 volts.
Set Condition: Throttle Position Sensor voltage at the PCM goes above 4.5 volts for 3.2
seconds.
POSSIBLE CAUSES
THROTTLE POSITION SENSOR SWEEP
INTERMITTENT CONDITION
THROTTLE POSITION SENSOR SIGNAL CIRCUIT SHORTED TO 5 VOLT SUPPLY CIRCUIT
THROTTLE POSITION SENSOR SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE
THROTTLE POSITION SENSOR INTERNAL FAILURE
SENSOR GROUND CIRCUIT OPEN
THROTTLE POSITION SENSOR SIGNAL CIRCUIT OPEN
PCM
~~~~~~~~~~~~
TPS Tests:
.