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My 2005 jeep wrangler died while driving and engine light came on. It's raining on the road. The car started back up and died again. I also had the heater on and turned it off and it stayed on; however, when you rev the accelerator it doesn't feel right.
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Start with the basics...meaning check the spark plug wires and spark plugs. While under the hood, inspect all hoses for a vacuum leak(s). Then turn the ignition key on-off-on-off- on...leave in the on position and write down the number of flashes the check engine light indicates....2 flashes = #2....pause.....3 flashes = #3.
Let start from here. Are you able to perform engine repairs or diagnostics???
Put the key in the ignition and turn it on and off (3) times without starting the jeep, leaving it in the on position count the (1) flashing indicator Light, Eg: (5) flashes, Then there will be a pause, then it may flash (3) times, this is a code #53. Keep your Eye on them and write them down. If you should miss (1) Repeat as many times as needed, Info: A #55 means there are no codes!!
This could be a blocked exhaust. Unscrew and remove the upstream O2 sensor (the one BEFORE the catalytic convertor) and then drive the jeep and see if the problem is resolved. If so then you have a blocked exhaust, probably caused by an internally collapsed catalytic convertor.
It could be a fuel pressure issue which is diagnosed via a fuel pressure test. You could, as a long shot, fit a new fuel filter and see if that resolves the issue, however, a worn fuel pump could also be causing it.
It could also, if the problem only occurs once the jeep has warmed up, be a problem with the upstream O2 sensor.
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