3.4 Swaps The 3.4 V6 Toyota engine

a340f automatic trans won't hold in 1st

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Old 10-28-2012, 09:36 AM
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a340f automatic trans won't hold in 1st

I have a 3.4 with '98 a340f auto transmisison. I have a rf1a gear drive case using Inchworm adapter. When I pull the trans lever back into 1st, it will not hold into first. I just shifts out like normal. This is very inconvenient on rocky declines. Any ideas?
Old 10-28-2012, 11:51 AM
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There are several wires in the 3.4 wiring harness that you have to have wired in for L and 2. I forgot to do this and L would act like 1-2 and 2 would shift 1-3.

Is this your problem?
Old 10-28-2012, 11:53 AM
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It very well could be. I'm sure it's something that simple. I'll go check thanks.
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