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I've had this happen a couple times over the past 6 months; including some strange immobilizer activity.<br /><br />The first time I had the "AT" (auto trans) light come on and I noticed that the car stuck itself in 3rd gear or higher; it seemed to lock out 1st and 2nd.<br /><br />I tested it with the sequential, but the car wouldn't go into first or second gear.<br /><br />So I turned the car off and on again to try to clear it in case it was a computer fault, and the alarm/immobiliser went off. And I couldn't stop it. Had to manually disconnect alarm and battery and reconnect before the car would start.<br /><br />Haven't had the alarm thing happen since but the AT light/locking out 1st/2nd has happened once since.<br /><br />Any ideas? :/<br /><br />Not sure if its related but the engine seems to "stick" a a bit at 1500 rpm when cruising; I increase throttle and boost increases but revs stick at 1500 before suddenly jumping to 2000. Seems to have a slight vibration when this happens too.<br /><br />I'm thinking it might be trans related but not sure

The revs 'sticking' is due to the torque converter locking, and is completely normal.

The trans staying in 3rd is is limp mode, means you have a problem

in adelaide mv automatics is the only man to see.

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