diseptiquest Posted August 13, 2009 Report Share Posted August 13, 2009 ca wont go into over drive it did up unitl today. i know its prob electricle but any advice would be great........ who makes our trannies in a built condition. wanna stay auto but wanna make sure our tranny can take it so i wanna put a good built one in........ Link to comment Share on other sites More sharing options...
mikec Posted August 13, 2009 Report Share Posted August 13, 2009 Overdrive often "dies" from a bad temp sensor on the engine. Overdrive is disabled until the engine warms up a bit... this temp sensor completes a ground to allow overdrive to work. When the sensor starts going bad, it gets a fair bit of resistance - often what folks experience is overdrive going in-and-out in sync with the turn signals as the turn signals affect the battery voltage slightly. Look near the engine thermostat for a small temp sensor with a yellow+green wire going to it. Unplug that wire and ground the wire... if overdrive works, you've proven the sensor is junk. For giggles: grab the connector "prong" of the sensor and try twisting it gently... on dying sensors the guts of the sensor disintegrate and the tang will turn easily. As a temp workaround, you can leave that jumper grounded. Just use the switch on the shift lever to disable overdrive until the dash temp gauge moves past the first "normal" tick mark. Unplugging the overdrive relay also works: it's by the "dead pedal" where your left foot sits; look for a large 8-pin relay on the end of the electrical panel you'll see under the dash on the left side of the car. mike c. Link to comment Share on other sites More sharing options...
diseptiquest Posted August 14, 2009 Author Report Share Posted August 14, 2009 thanx Link to comment Share on other sites More sharing options...
diseptiquest Posted August 14, 2009 Author Report Share Posted August 14, 2009 whitch wire do i ground Link to comment Share on other sites More sharing options...
mikec Posted August 18, 2009 Report Share Posted August 18, 2009 the yellow+green one. mike c. Link to comment Share on other sites More sharing options...
pitboss Posted September 30, 2009 Report Share Posted September 30, 2009 I push the button on the shift lever to try to disengage my OD while heavy boosting but it still shifts into 4'th. Maybe a safety feature? Link to comment Share on other sites More sharing options...
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