YOU MAY WANT TO CHECK THE MASS AIR FLOW CENSOR. IT MAY NEED TO BE CLEANED OR REPLACED. ALSO MAKE SURE YOUR AIR FILTER IS CLEAN. if you really want to see what it is open the hood and have someone start it. Find the mass air flow sensor and as it is running tap lightly on it. If it straightens it out that is the problem if not i say go to the iac valve and replace it. That was a common problem with probes. The iac is called an idle air control valve and is usually around 60 to 80 dollars at autozone. ===================== The pins on the connector for the mass air flow sensor can become lax over time as well, causing the engine to not receive proper signals from the MAF. Take off the connector and push the metal connectors down so they apply pressure to the other side of the connection once it is plugged in again. Just something free to try first before buying parts. Also consider pulling the codes from the engine by jumping some test connectors in the engine compartment. Do some searching on the net, and you should be able to find out exactly how and what codes mean what. Check the main air intake hose as well, on the older model Probes at least, the hoses crack, and when gas is applied, the engine will move slightly, opening up the crack in the hose, and causing a massive vacuum leak. -Shaun
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