Tranny test drive

walter bright

New member
Nov 2, 1999
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Hi Ron & Gina;

If the road you are talking about is anything like RT 93 from Vegas to
Kingman ( at the Vegas end )then my temp is not much different. It has
worried me too as it is higher than others report. But after 10,000 miles,
it appears to be normal for my transmission. Since it works fine otherwise
and no other signs of trouble are present, I take it to be normal operation
under its current setup. walter bright, 76GB.
- ----- Original Message -----
From: Ron & Gina great/positive ran great, about 4 miles upto 160-175, then went up alittle
> hill about a mile long,200-228 55mph then it's a slight roller
coaster
> type road slight upgrade thur out, 218-230, Then mostly stayed 218-225,
till
> another small hill, from stoplight to about 65mph for alittle more than a
> mile, back up to 240, Then avg. 225 with some drops to 170 on coast,
(think
> trips to CA. will still top 250). Any thoughts?
>
>
 
Hi all,

Well finished most the work on the Pumpkin-Rose. Changed tranny
oil/filter/cleaned, Removed 16 tube cooler(was easier due to brackets,need
to make up new ones to leave maxiekool in, most likely next test) and left
the 3 tube in(its fined,o/d about 1" not tubing type?cast/pipe? about
20"X7"X1&1/2" . Blew out all lines and inspected, all looked good and all
clear & hoses,fittings atleast same size as in/out on tranny, cleaned grill
area/Rad./cooler fins. WesTach tranny gauge checked out on the number, when
ohmed and hot water tested. Greased all and Adjusted brakes/checked
tires/susp. while on stands. Then went on my 25mile test drive. Engine temps
still great. Tranny during long warmup starting at about 90d about the same
outside temp, and stopped about 117. On the drive tranny shifted
great/positive ran great, about 4 miles upto 160-175, then went up alittle
hill about a mile long,200-228 55mph then it's a slight roller coaster
type road slight upgrade thur out, 218-230, Then mostly stayed 218-225, till
another small hill, from stoplight to about 65mph for alittle more than a
mile, back up to 240, Then avg. 225 with some drops to 170 on coast, (think
trips to CA. will still top 250). Asked WesTach what they thought....maybe
thats where your tranny runs...was there answer. Which might be??(but its
higher than posts here) Is there anything else to check/do? Is the
pump/converter starting to show something is coming up?(even tho its running
great) Don't sweat the small stuff?? Have never br_ _ _ d_ _ n in any
vehicle I've owed, And I hate to start now? Any thoughts?

Ron&Gina
73 Pumpkin-Rose
Ft. Mohave,AZ.
 
Thanks Walter,

Yeah, its the same kind of road, Guess its the way it is here for my tranny.
Just trying to gauge oil change if thats my normal temp. Thanks again!!!

Ron&Gina
73 Pumpkin-Rose
Ft. Mohave, AZ.

- ----- Original Message -----
From:
To:
Sent: Sunday, November 14, 1999 9:20 AM
Subject: Re: GMC: Tranny test drive

> Hi Ron & Gina;
>
> If the road you are talking about is anything like RT 93 from Vegas to
> Kingman ( at the Vegas end )then my temp is not much different. It has
> worried me too as it is higher than others report. But after 10,000
miles,
> it appears to be normal for my transmission. Since it works fine
otherwise
> and no other signs of trouble are present, I take it to be normal
operation
> under its current setup. walter bright, 76GB.
> ----- Original Message -----
> From: Ron & Gina On the drive tranny shifted
> > great/positive ran great, about 4 miles upto 160-175, then went up
alittle
> > hill about a mile long,200-228 55mph then it's a slight roller
> coaster
> > type road slight upgrade thur out, 218-230, Then mostly stayed 218-225,
> till
> > another small hill, from stoplight to about 65mph for alittle more than
a
> > mile, back up to 240, Then avg. 225 with some drops to 170 on coast,
> (think
> > trips to CA. will still top 250). Any thoughts?
> >
> >
>
 
Hi Arch,
> Where are you measuring the temps? Where is the sensor mounted?

about 4" out of tranny.

Ron

- ----- Original Message -----
From:
To:
Sent: Sunday, November 14, 1999 5:16 PM
Subject: Re: GMC: Tranny test drive

> In a message dated 11/14/1999 1:58:41 PM Central Standard Time,

>
> > Then mostly stayed 218-225, till
> > another small hill, from stoplight to about 65mph for alittle more than
a
> > mile, back up to 240, Then avg. 225 with some drops to 170 on coast,
(think
> > trips to CA. will still top 250). Asked WesTach what they thought.
>
> Ron
>
>
> Take Care
> Arch
 
> will ask. What kind of ATF are you running?

Valvoline

Ron

- ----- Original Message -----
From:
To:
Sent: Sunday, November 14, 1999 5:37 PM
Subject: Re: GMC: Tranny test drive

> In a message dated 11/14/1999 5:54:20 PM Central Standard Time,

>
> > Yeah, its the same kind of road, Guess its the way it is here for my
tranny.
> > Just trying to gauge oil change if thats my normal temp. Thanks
again!!!
> >
> Ron
>
> I dont remember if you said what kind of ATF you are using. So I
>
> Take Care
> Arch
 
I am on the output line to cooler. No problem?????? :-)>

Ron

- ----- Original Message -----
From:
To:
Sent: Sunday, November 14, 1999 8:18 PM
Subject: Re: GMC: Tranny test drive

> In a message dated 11/14/1999 9:09:34 PM Central Standard Time,

>
> > about 4" out of tranny.
> >
> Ron
>
> Do you mean on one of the cooler lines? You may be on the output
> from the tranny-----before the cooler. I will let others who know more
> than me explain but I will bet that many of the measurement you have been
> hearing are pan measurements----not tranny output measurements.
> You may well not have a problem-----try moving the sensor to the
> other line and take a reading. I honestly dont know what the number
> should be but we may well be comparing apples and oranges here.
> Good Luck
>
> Take Care
> Arch
 
Thanks for the input Arch,

Well I did about all I could do, Its let her rip now, By hand test coolers
Rad/ext. are cooling, Not too bad either. Was going to order pan from caspro
and install a second sender in pan with switch, But kind of saving limited
$, for more needed replacements.....my air system/two more tires Oh and
don't even talk about upgrades. :-)> Thanks again

Ron

- ----- Original Message -----
From:
To:
Sent: Sunday, November 14, 1999 8:52 PM
Subject: Re: GMC: Tranny test drive

> In a message dated 11/14/1999 9:25:03 PM Central Standard Time,

>
> > I am on the output line to cooler. No problem?????? :-)>
> >
> Ron
>
> I dont know----we need a pro here. The temps are going to be higher
> on the output line than they are in the pan. I do not know by how much.
> Sure hope somebody can help you.
>
> Take Care
> Arch
 
I'll dip my toe in here a bit as to what I'm basin my judgement on re tranny
fluid temps.

I seem to recall, or rather what sticks in my feebel mind, is that max
"good" temp is about 250. Not wanting to run at "max" I set my goal to to be
below 250. I managed that goal with my current temporay setup that I'll
permanize some day :-)

I read temps in the pan and in the external filter I installed. As the
filter is in front of the engine it's possible that the temp in the tranny
is slightly higher.

I havn't had time to post exact numbers (keeping the bills paid keeps
inetrfeering) but on the avearge I see about a 70 degree difference, i.e. if
150 in the pan it'll be 220 at the filter.

My normal temps at the filter are approx 180 and temps in the 220/230 range
don't last long anymore, i.e. perhaps last 5 minutes of a long climb.

I'll try and collect some new numbers next trip as well as recording/posting
some tire pressures and temps (actual).

Heinz

> In a message dated 11/14/1999 9:25:03 PM Central Standard Time,

>
> > I am on the output line to cooler. No problem?????? :-)>
> >
> Ron
>
> I dont know----we need a pro here. The temps are going to be higher
> on the output line than they are in the pan. I do not know by how much.
> Sure hope somebody can help you.
>
> Take Care
> Arch
>
>
 
Thanks Heinz

Guess my numbers are alittle higher, but might not be to bad and mine does
come back down pretty fast also, and could be improved with switch of
coolers. But won't happen till next trip, might switch for return trip.
Thanks again

Ron

- ----- Original Message -----
From: Heinz Wittenbecher
To:
Sent: Sunday, November 14, 1999 10:33 PM
Subject: Re: GMC: Tranny test drive

> I'll dip my toe in here a bit as to what I'm basin my judgement on re
tranny
> fluid temps.
>
> I seem to recall, or rather what sticks in my feebel mind, is that max
> "good" temp is about 250. Not wanting to run at "max" I set my goal to to
be
> below 250. I managed that goal with my current temporay setup that I'll
> permanize some day :-)
>
> I read temps in the pan and in the external filter I installed. As the
> filter is in front of the engine it's possible that the temp in the tranny
> is slightly higher.
>
> I havn't had time to post exact numbers (keeping the bills paid keeps
> inetrfeering) but on the avearge I see about a 70 degree difference, i.e.
if
> 150 in the pan it'll be 220 at the filter.
>
> My normal temps at the filter are approx 180 and temps in the 220/230
range
> don't last long anymore, i.e. perhaps last 5 minutes of a long climb.
>
> I'll try and collect some new numbers next trip as well as
recording/posting
> some tire pressures and temps (actual).
>
> Heinz
>
>
>
> > In a message dated 11/14/1999 9:25:03 PM Central Standard Time,

> >
> > > I am on the output line to cooler. No problem?????? :-)>
> > >
> > Ron
> >
> > I dont know----we need a pro here. The temps are going to be higher
> > on the output line than they are in the pan. I do not know by how much.
> > Sure hope somebody can help you.
> >
> > Take Care
> > Arch
> >
> >
>
 
I use the digipanel guages, and bought myself a second sensor. I put one on
the hot side of the tranny and one on the low side. The temp difference
always appears to be 25degrees or one mark on the digipanel guage. Since I
have sensors on both, I can flip from one to the other and the differences
have always been that. my .02c
al

>
> from the tranny-----before the cooler. I will let others who know more
> than me explain but I will bet that many of the measurement you have been
> hearing are pan measurements----not tranny output measurements.
> You may well not have a problem-----try moving the sensor to the
> other line and take a reading. >>
>
> The hot line coming from the transmission toward the radiator cooler is the
> inside line closest to the main body of the transmission.
>
> Emery Stora
> 77 Kingsley
> Santa Fe, NM