At 05:51 PM 6/28/01 +0000, you wrote:
> I don't know much about auto trannies, so I thought someone here might
>have some insight. Lately, my Ram (318 Magnum w/A518 tranny) makes a
>strange sound when I put it in reverse. It doesn't actually happen
>when I shift into reverse, the sound only happens when I apply power.
>(So its really evident backing up a hill, for example.) --SNIP--
The only thing that I've read is that line pressure is three times as much
in reverse as it is in a forward gear, and different materials are now being
used in some seals and the filter. Apparently, all three combine to produce
noise while in reverse.
> Also, the tranny seems rather hesitant to shift at times. Sometimes
>it'll stay in a gear when really it should be upshifting; I'll have to
>give it some gas and let off to convince it to shift. I've got an
>extended warranty on it so I could take it to the dealer, but I
>thought I'd get some opinions here first. Plus, I don't want to take it
>in this close to the BBQ, I'll wait until after if I do. I did check the
>tranny fluid by parking in a level place, running the gear selector
>through all the gears, leaving it in neutral, and checking the dipstick
>with the engine running. Its right where its supposed to be, and the fluid
>is a light red, and doesn't smell burnt or anything.
There was a TSBR # 18-09-94 on the 92-93 Dodge Ram (& others) dealing
with delayed upshift. It says that the upshift of the auto. transmission is
delayed during vehicle acceleration or coast. This condition may be caused by:
* corrosion of the transmission throttle lever-to-throttle valve cable
connector,
* a weak transmission throttle valve return spring, OR
* a build up of contaminants around the metal shaft and plastic shield
at the transmission end of the throttle valve cable.
A correctly adjusted TV cable will cause the transmission throttle valve lever
to move simultaneously with the engine throttle body from the idle position.
Performance is substantially affected by slight misadjustments. It is
important
that the transmission throttle valve adjustment be as accurate as possible.
HTH, BT (RT to some)
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