Re: Modern transmissions??

Posted by HH56 On 2009/8/1 20:37:27

Yes, the throttle linkage is same as throttle cable. Interesting symptoms though. If it were only high range forward, would jump on throttle pressure as that is what controls the amount of force the clutches need to keep engaged. Too little pressure and slippage to the point of overheat & burning & finally no moving would occur after the few miles. Does the fluid smell burned or appear discolored?

How about low range movement? If none & since reverse is also involved, that leads to overall pressure. Assume you have checked the main items mentioned in troubleshooting a failure to move -- fluid level-12 quarts, selector valve adjustment and band adjustment. If those OK, then could be front pump --or a sticking valve--.

The pressure tests for front pump (and actually most of the pressures) are easily done by your mechanic with common materials--gauge, hose, fittings & no disassembly as the ports are external. Procedure is well described in service manual. Could go a long way to rule things out. If those pressures checked OK, then would be time for a more detailed internal pressure check or teardown.