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1

To me the doesn't work and the car jerks back and forth. Is more indicative of a transmission or clutch issue. One obvious and simple thing to check is the ATF level. Make sure it's appropriate as per the manufacturers spec (assuming it is automatic). I don't fully know how auto trans systems work, much less the one is an '08 PT Cruiser, but you could ...


2

It could be a few things. airflow meter: could need a cleaning, most likely is partially disconnected or has a bad ground connection. Unplug it and replug it to verify the electrical connection, then inspect the grounding wire. poor fuel delivery: likely could be injectors, fuel filter or fuel pump. Test the fuel pressure and take it from there. throttle ...


2

When you suddenly push the gas pedal and the car doesn't react well, doesn't pickup but hesitates it means that uneven fuel mixture is getting in. Or the gas line pressure is low (clogged filter, bad pump) and it is not providing sufficient gas, or the air intake is blocked (dirty filter) and is not giving all the air the engine requires. Check: gas and air ...


4

I suspect your Idle Air Control (IAC) Valve. It's job is to feed enough air to the engine when you take your foot of the throttle. This is a 15 year old engine we are talking about, the valve may be too dirty to operate or may have simply broken. You may want to try one from the junkyard just for diagnosis purposes, and you should be able to do this yourself....



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