Pretty unlikely I'd say.
only thing that pops to mind is the ATF Cooler/Heat exchange mounted on
the nose of the auto trans ..
engine coolant goes through it.

Have not seen it myself, but sometimes they fail ...possibly allowing
coolant into the ATF of the trans,
which would be awful for the trans.

what does reading the ATF dipstick show ?
level ? ...condition, color, smell ? etc.

Scott

On 05/11/2016 10:51 AM, John Rodgers wrote:
> This problem is on my Carat in which the engine has been replaced because
> the original one was destroyed through an overheating incident. My question
> here is: was it possible the overheating of that engine somehow had any
> effect on the autotranny, and if so, how would it likely react!
>
> Thanks.
>
> John
> On May 11, 2016 14:57, "Dennis Haynes" <d23haynes57@hotmail.com> wrote:
>
>> There are a number of issues that can cause failure to engage the direct
>> (3rd) gear set. The easy to check include the governor, fluid level, and
>> filter condition. After that the valve body (rare) or something internal is
>> leaking enough the system can't get enough pressure to apply all the
>> clutches. The Bentley details some tests that can be made with a pressure
>> gauge. Start with fluid level and condition and if needed replace the fluid
>> and clean-replace the filter.
>>
>> Dennis
>>
>>
>>> Date: Wed, 11 May 2016 10:32:17 -0500
>>> From: jrodgers113@GMAIL.COM
>>> Subject: Autotranny
>>> To: vanagon@GERRY.VANAGON.COM
>>>
>>> What would be some causes for the autotranny not to shift into 3rd gear.
>> It
>>> worked fine before but has been sitting for 12 months!
>>>
>>> John