Pete M Posted June 7, 2013 Posted June 7, 2013 it'll be fine for maybe 100 shifts and then decide to bang into gear pretty dang hard. ideas? 176k on a '96 aw4. fluid looks good.
88whitemanche Posted June 7, 2013 Posted June 7, 2013 Could it be that the valves in the valve body are clogged? That's giving you the hard shifting?
Pete M Posted June 13, 2013 Author Posted June 13, 2013 been driving it for a while now and I've got a bit more info. sometimes (not always) when I go to accelerate from a stop, the engine will rev (as if I had shifted into neutral) and then the trans will suddenly bang hard when it does go into gear. If I catch it in time, I can back off the gas and the bang is much less harsh.
cruiser54 Posted June 13, 2013 Posted June 13, 2013 Do a drain and fill. Test the TPS on the trans side. Refresh the trans connectors.
HOrnbrod Posted June 14, 2013 Posted June 14, 2013 First you have to determine if the harsh shift is due to hydraulics or a bad TCU. First check the TV cable adjustment detailed in this thread: http://comancheclub.com/topic/35987-weird-transmission-problem/?hl=cable&do=findComment&comment=360110. If okay, then do the manual shifting test by disconnecting the inline fuse from the TCU under the right side dash, or unplugging the connector from the module. Then go for a drive and manually shift from the 3 position to the 1-2 position, then to D to see if the harsh shift is gone.
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