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Message: <blockquote data-quote="ryclef331" data-source="post: 333903" data-attributes="member: 8067"><p>Taking the spout connecter out takes the timing control completely away from the ECU. When you plug the spout back in, you give it back to the ECU...so it adjusts the timing as neccessary. That is normal. What is your TPS voltage at idle? If it is too high, it can make the ecu think you're trying to "go" so it bumps timing to accel the motor...not enough air to accel, goes rich, engine dies down....back and forth it goes...surging. You might wanna look into checking some sensors. I don't think your issue is with timing. Try out a new coolant temp sensor and air inlet temp. Have you cleaned your maf? You should be doing all this stuff with the motor hot ideally (at operating temp).</p></blockquote><p></p>