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  Uplander 3.9 V6 2008 egt Temp 1000c !

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Uplander 3.9 V6 2008 egt Temp 1000c ! by red dragon
Started on: 07-02-2020 02:18 AM
Replies: 7 (303 views)
Last post by: Will on 07-05-2020 03:01 PM
red dragon
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Report this Post07-02-2020 02:18 AM Click Here to See the Profile for red dragonSend a Private Message to red dragonEdit/Delete MessageReply w/QuoteDirect Link to This Post
if Cruise speed is 120kh egt Temp 900+ Water Temp 94.
If Cruise speed is 140-150 egt Temp 1000c Water Temp 94.

Is it safe egt Temp 980c to Cruise speed for 3-4 Hours

The vehicle travels 380 kilometers on 70 liters
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Patrick
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Report this Post07-02-2020 03:57 AM Click Here to See the Profile for PatrickSend a Private Message to PatrickEdit/Delete MessageReply w/QuoteDirect Link to This Post

Does this have some relevance to a Pontiac Fiero?
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red dragon
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Report this Post07-02-2020 04:57 AM Click Here to See the Profile for red dragonSend a Private Message to red dragonEdit/Delete MessageReply w/QuoteDirect Link to This Post
Motor V6 3900cc .
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Will
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Report this Post07-02-2020 09:33 AM Click Here to See the Profile for WillSend a Private Message to WillEdit/Delete MessageReply w/QuoteDirect Link to This Post
Are you measuring EGT or using calculated catalyst temperature?
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red dragon
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Report this Post07-03-2020 08:15 AM Click Here to See the Profile for red dragonSend a Private Message to red dragonEdit/Delete MessageReply w/QuoteDirect Link to This Post
I'm using a obd2 app car scanner.

Pic

[This message has been edited by red dragon (edited 07-03-2020).]

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pmbrunelle
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Report this Post07-03-2020 02:16 PM Click Here to See the Profile for pmbrunelleSend a Private Message to pmbrunelleEdit/Delete MessageReply w/QuoteDirect Link to This Post
I drove my Fiero for about two hours at 110 km/h, and the y-pipe, turbine housing, and discharge pipe all had a faint red glow. It was a dark night; I don't think the glow would be visible in daytime. I don't have an EGT probe on my car.

So I think that some amount of heat is normal with sustained highway driving.

I don't know if it's appropriate to use calculated catalyst temperature as a proxy for EGT. Do you want to know if you're going to overheat exhaust valves?

[This message has been edited by pmbrunelle (edited 07-03-2020).]

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red dragon
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Report this Post07-03-2020 06:18 PM Click Here to See the Profile for red dragonSend a Private Message to red dragonEdit/Delete MessageReply w/QuoteDirect Link to This Post
Yes I am afraid that I will overheat exhaust valve.

the 3.9l do not have egr it is vvt-egr.

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Will
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Report this Post07-05-2020 03:01 PM Click Here to See the Profile for WillSend a Private Message to WillEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by red dragon:

I'm using a obd2 app car scanner.

Pic



 
quote
Originally posted by red dragon:

Yes I am afraid that I will overheat exhaust valve.

the 3.9l do not have egr it is vvt-egr.


If you're using a stock tune on a stock engine, there's zero chance you'll overheat an exhaust valve, unless there's a manufacturing defect in the valve.
OBD Catalyst Temperature is ESTIMATED based on a mathematical model of the heat flows in the stock exhaust system. The more things in your system that differ from the stock system, the wronger the estimated catalyst temperature will be.
Catalyst temp frequently exceeds EGT because the catalyst "burns" the unburned hydrocarbons in the exhaust.
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