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2002 Eurovan transmission temp issue
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BayStYat
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PostPosted: Thu Jan 26, 2023 1:56 pm    Post subject: 2002 Eurovan transmission temp issue Reply with quote

what would cause high transmission temp? 248 Deg F
flat interstate driving

RPMs are 2750 at 60MPH
New transmission cooler
New oil change (checked level 3 times)

I am at a loss.


Last edited by BayStYat on Fri Jan 27, 2023 7:41 pm; edited 1 time in total
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MrPulldown
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PostPosted: Thu Jan 26, 2023 5:03 pm    Post subject: Re: 2002 Eurovan Reply with quote

depends on how mechanically included you are. From what I have read, it basically requires an engine/transmission removal to do. TC don't generally go bad is what I have also read. Bad trans issues are a result of bad valve body, ribbon cable or just a bad trans.

Best of luck.
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BayStYat
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PostPosted: Fri Jan 27, 2023 1:14 pm    Post subject: Re: 2002 Eurovan Reply with quote

MrPulldown wrote:
depends on how mechanically included you are. From what I have read, it basically requires an engine/transmission removal to do. TC don't generally go bad is what I have also read. Bad trans issues are a result of bad valve body, ribbon cable or just a bad trans.

Best of luck.


Thank you sir for that information. Would you happen to know some of the systems of a bad ribbon cable? My problem is after installing a transmission cooler. My transmission now runs at 245°F.
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[email protected]
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PostPosted: Fri Jan 27, 2023 7:54 pm    Post subject: Re: 2002 Eurovan transmission temp issue Reply with quote

Look to that cooler is there a thermosatic switch in there in between, going the right way?
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PostPosted: Sat Jan 28, 2023 4:36 am    Post subject: Re: 2002 Eurovan transmission temp issue Reply with quote

How are you measuring it? Verify the measurement with an ir gun before you dive in
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BayStYat
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PostPosted: Sat Jan 28, 2023 5:47 am    Post subject: Re: 2002 Eurovan transmission temp issue Reply with quote

[email protected] wrote:
Look to that cooler is there a thermosatic switch in there in between, going the right way?


no sir. i did not go with the thermostat switch.
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BayStYat
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PostPosted: Sat Jan 28, 2023 5:48 am    Post subject: Re: 2002 Eurovan transmission temp issue Reply with quote

Abscate wrote:
How are you measuring it? Verify the measurement with an ir gun before you dive in


I am using the Scan Gauge II.

Ok i did a 40 mile round trip half interstate 65mph. measured with a IR thermostat

pulled over off interstate 171 at the oil pan after 10 miles at 65
120 in the cooler
107 out the cooler

pulled in to the driveway 8 miles off the interstate some stop and go. 198 oil pan
120 in the cooler
101 out the cooler
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PostPosted: Sat Jan 28, 2023 1:04 pm    Post subject: Re: 2002 Eurovan transmission temp issue Reply with quote

Is your ScanGauge properly programmed for the x-gauge trans temp? The off-the-shelf trans temp in the ScanGauge will overreport the temperature.

See https://www.scangauge.com/x-gauge-commands/vw/ for more info on the special programming codes required for ScanGauge II in the Eurovan application.

kourt
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BayStYat
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PostPosted: Sat Jan 28, 2023 1:24 pm    Post subject: Re: 2002 Eurovan transmission temp issue Reply with quote

kourt wrote:
Is your ScanGauge properly programmed for the x-gauge trans temp? The off-the-shelf trans temp in the ScanGauge will overreport the temperature.

See https://www.scangauge.com/x-gauge-commands/vw/ for more info on the special programming codes required for ScanGauge II in the Eurovan application.

kourt


Thank you. I don’t know if it was. I just sent it in to SC for the Eurovan firmware.

I will do that for sure.

Does the temps I got from the IR thermostat sound ok?
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PostPosted: Sat Jan 28, 2023 2:44 pm    Post subject: Re: 2002 Eurovan transmission temp issue Reply with quote

The temps you list as measured at the cooler seem very low. The trans oil pan temps seem about correct.

It could be that the trans is not getting hot enough for the Derale thermostat to open, which would result in hot ATF going to the cooler in front of the radiator.

I have the GoWesty cooler with the Derale thermostat and my Scangauge 3 indicates a solid 185F temperature when running 75MPH on flat roads on a 70 degree day, and it really never gets above 205F as long as it's not hot outside.

kourt
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PostPosted: Sat Jan 28, 2023 3:02 pm    Post subject: Re: 2002 Eurovan transmission temp issue Reply with quote

kourt wrote:
The temps you list as measured at the cooler seem very low. The trans oil pan temps seem about correct.

It could be that the trans is not getting hot enough for the Derale thermostat to open, which would result in hot ATF going to the cooler in front of the radiator.

I have the GoWesty cooler with the Derale thermostat and my Scangauge 3 indicates a solid 185F temperature when running 75MPH on flat roads on a 70 degree day, and it really never gets above 205F as long as it's not hot outside.

kourt


Kourt

I measured the cooler at the aluminum in/out barb fittings.

thank you. I do not have a thermostat in line of the cooler. Could not having the thermostat be a problem?

also I have the 2002 Eurovan Vista Winnebago
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PostPosted: Sun Jan 29, 2023 1:15 pm    Post subject: Re: 2002 Eurovan transmission temp issue Reply with quote

BayStYat wrote:
kourt wrote:
The temps you list as measured at the cooler seem very low. The trans oil pan temps seem about correct.

It could be that the trans is not getting hot enough for the Derale thermostat to open, which would result in hot ATF going to the cooler in front of the radiator.

I have the GoWesty cooler with the Derale thermostat and my Scangauge 3 indicates a solid 185F temperature when running 75MPH on flat roads on a 70 degree day, and it really never gets above 205F as long as it's not hot outside.

kourt


Kourt

I measured the cooler at the aluminum in/out barb fittings.

thank you. I do not have a thermostat in line of the cooler. Could not having the thermostat be a problem?

also I have the 2002 Eurovan Vista Winnebago


Odd you changed the title and all the contents of your initial post.

The trans functions properly when the fluid is up to temp. Too cold and it will have some shifting issues. The thermostat not only helps the ATF get up to temp quicker, but to prevent overcooling in cold climates. 180 is when they open.
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BayStYat
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PostPosted: Sun Jan 29, 2023 1:20 pm    Post subject: Re: 2002 Eurovan transmission temp issue Reply with quote

MrPulldown wrote:
BayStYat wrote:
kourt wrote:
The temps you list as measured at the cooler seem very low. The trans oil pan temps seem about correct.

It could be that the trans is not getting hot enough for the Derale thermostat to open, which would result in hot ATF going to the cooler in front of the radiator.

I have the GoWesty cooler with the Derale thermostat and my Scangauge 3 indicates a solid 185F temperature when running 75MPH on flat roads on a 70 degree day, and it really never gets above 205F as long as it's not hot outside.

kourt


Kourt

I measured the cooler at the aluminum in/out barb fittings.

thank you. I do not have a thermostat in line of the cooler. Could not having the thermostat be a problem?

also I have the 2002 Eurovan Vista Winnebago


Odd you changed the title and all the contents of your initial post.

The trans functions properly when the fluid is up to temp. Too cold and it will have some shifting issues. The thermostat not only helps the ATF get up to temp quicker, but to prevent overcooling in cold climates. 180 is when they open.


Thanks. I did not want to create a new thread.
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BayStYat
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PostPosted: Mon Feb 06, 2023 4:53 pm    Post subject: Re: 2002 Eurovan transmission temp issue Reply with quote

My scan gauge is reading 15-25 degrees higher than the transmission pan with an infrared thermometer.

What should I trust?
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PostPosted: Mon Feb 06, 2023 7:33 pm    Post subject: Re: 2002 Eurovan transmission temp issue Reply with quote

You didn't answer the question of whether or not your ScanGuauge is reading X-gauge temps from the special configs (requires special programming, but reads at the proper temps) or from the ScanGauge default "trans temp" values, which will be 15 to 30 degrees higher. This needs to be determined with certainty.

kourt
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BayStYat
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PostPosted: Mon Feb 06, 2023 7:37 pm    Post subject: Re: 2002 Eurovan transmission temp issue Reply with quote

Image may have been reduced in size. Click image to view fullscreen.

[
Image may have been reduced in size. Click image to view fullscreen.

quote="kourt"]You didn't answer the question of whether or not your ScanGuauge is reading X-gauge temps from the special configs (requires special programming, but reads at the proper temps) or from the ScanGauge default "trans temp" values, which will be 15 to 30 degrees higher. This needs to be determined with certainty.

kourt[/quote]
Kourt

I did enter the FTF under the scangauge x option.

I used this tutorial

https://youtu.be/4XxPsBD1qAQ
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PostPosted: Tue Feb 07, 2023 4:48 am    Post subject: Re: 2002 Eurovan transmission temp issue Reply with quote

Great, thanks for that followup.

kourt
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EuroTec
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PostPosted: Tue Feb 07, 2023 6:21 am    Post subject: Re: 2002 Eurovan transmission temp issue Reply with quote

The fluid temp sensor is soldered onto the ribbon cable attached to the solenoids so it's a more accurate reading than the pan temp.
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PostPosted: Sun Feb 12, 2023 6:49 am    Post subject: Re: 2002 Eurovan transmission temp issue Reply with quote

EuroTec wrote:
The fluid temp sensor is soldered onto the ribbon cable attached to the solenoids so it's a more accurate reading than the pan temp.


Ok thanks. I am lost why my temp is running high. Verified my convertor is locking up with the correct RPMs. Running a trans cooler. What else can I check?
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