The engine starts then shuts off . it only runs a few sec. if you try to give it gas it shuts off even faster. I put another factory cap on it. I took it to have a computer put on it and it says emission system leak. It started to do this bout a week ago then stopped doing it . but now it is has started it and cant get it to start
SOURCE: Check Engine Light - Code numbers P1486 & P0455
Found on my jeep that the high quality vac line to the evap bottle had split on the under side.
SOURCE: 1999 jeep grand cherokee / 4.0 L.
I had a skim module go out in mine in the ignition, and I have a 2001. It's a 100 part, and now it starts fine.
SOURCE: How can I reset my Factory Alarm on my Jeep it wont run
Alarm Module Reset Procedure
NOTE: This information applies to a Vehicle Theft Security System (VTSS) that was armed when the battery was disconnected and reconnected.
When the armed VTSS senses that the battery has been disconnected and reconnected, it enters its power-up mode. In the power-up mode the alarm system remains armed following a battery failure or disconnect. If the VTSS was armed prior to a battery disconnect or failure, the system will have to be actively or passively disarmed following a battery reconnection.
The power-up mode will also apply if the battery goes dead while the system is armed and battery jump-starting is attempted. The engine no-run feature will prevent the engine from starting until the alarm system has been actively or passively disarmed.
Passive disarming of the Vehicle Theft Security System (VTSS) occurs when the vehicle is unlocked using the key to unlock either front door or the lift gate. Active disarming of the VTSS occurs when the vehicle is unlocked by depressing the Unlock button of the Remote Keyless Entry (RKE) transmitter.
Once the alarm has been activated (horn sounding, lights flashing, and the engine no-run feature), either disarming method will deactivate the alarm.
Depressing the Panic button (if equipped) on the RKE transmitter will also disarm the VTSS, but the horn will sound and the lights will flash for about three minutes as part of the Panic feature. The horn and lights can be stopped by pressing any of the RKE transmitter's buttons or driving the vehicle above 15 mph.
SOURCE: check engine light code PO456
most likely the pressure sensor in the fuel tank for the evap system is defective.
SOURCE: Jeep Grand Cherokee Power Loss
a bad cam sensor will cause vehicle to shut off while driving, and cause a hard time starting. but this usually sets a trouble code p0340. scan vehicle to see if any codes come up. after it is fixed, erase codes with a obd2 scanner. if you do not have one, you can go to any auto parts store and they will erase codes for free.
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