Turbo on a long trip

[Tr4ckD4ys]

Also it’s 2026, why are we still talking about turbos like they just got invented? It’s incredible to me how decades-old tech is being treated by some folks like it was released yesterday and their reliability can’t be trusted. Like where were you the last 30 years? Do you live in a place where selling forced-induction engines is forbidden?

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[Guv]

Some cars have “fuel injection” today also

 

[Valpo Jeep]

I am on my 3rd turbo engine in the family and also had a supercharged engine. Never worried about letting them idle and "cool" before shutoff.

First 2 turbo's were Chevy. Combined miles on those 2 engines was 357,000 miles
Third turbo is in the Maserati and its actually 400 HP twins. 30,000 miles
Supercharger was in our old Audi A7. Traded that in at 234,000 miles

Good oil, good maintenance, don't beat on them excessively and they will last and last and last.

 

[Wabujitsu]

I’m on my second 2.0T Jeep, here in FL. I never do a turbo cool-down. Not even when I took my Jeep from FL to AZ and back, two falls ago. I’m almost at 50K in that current rig, zero issues.

 

[AVENTUS]

I agree with others posting here, give the coolant time to bring the turbo temperatures down before shutting off, mainly and especially after highway driving. The turbo can get very hot and if you just shut it off you will get some coking in the turbo and on the variable vanes. A short quick shutdown where you fill up and get going again may not cause measurable coking, but it could add up over time. It may be interesting if you get the scangauge or similar device and set one of the gauges to EGT so you can see how high it gets while driving and what it gets down to after a minute or two of cooling.

Can anyone with a Scanguage or other comparable device, provide us all with this excellent info ? So we can make our own superior tables catered specifically to time periods for the typical several scenarios:

typical stop and go

Highest speeds

etc

 

[zouch]

so many variables,.. time, speeds, temps, barometric pressure/altitude, load,..

if you care, do it yourself. (i use a Banks Datamonster.)

Can anyone with a Scanguage or other comparable device, provide us all with this excellent info ? So we can make our own superior tables catered specifically to time periods for the typical several scenarios:

typical stop and go

Highest speeds

etc

 

[yokramer]

Can anyone with a Scanguage or other comparable device, provide us all with this excellent info ? So we can make our own superior tables catered specifically to time periods for the typical several scenarios:

typical stop and go

Highest speeds

etc

 

[west tex]

I've taken my 2.0T on a couple of long (more than 1200 miles) road trips w/o even thinking about a cool down when I park it. I make regular 250 mile trips. Same - same.

Never had a hiccup.

 

[THAW]

Can anyone with a Scanguage or other comparable device, provide us all with this excellent info ? So we can make our own superior tables catered specifically to time periods for the typical several scenarios:

typical stop and go

Highest speeds

etc

JScan is an option for monitoring:

MODULES -> Powertrain Control -> LIVE DATA -> EXH_TEMP - (°F)

 

[Matt878]

This thread is ridiculous.

Y'all gunna be installing A’Pexi turbo timers next as if it’s 1998.

diesel and 2.0 are not the same at all. Plus that diesel manual is stating cooldowns for a loaded vehicle. Not a regular 2.0 with some cargo casually driving down the highway.

stop the insanity.

every damn truck you see on America’s highways are turbocharged but suddenly Jeep owners need J-Scan to monitor EGT’s (rolls eyes).

id be willing to bet more than half the people concerned about this topic run 87 and swear it’s okay to do so.

you wanna cooler EGT’s and a cooler turbo? Cut the shit and run 91/93. End of thread.

 

[Kracka]

This thread is ridiculous.

Y'all gunna be installing A’Pexi turbo timers next as if it’s 1998.

diesel and 2.0 are not the same at all. Plus that diesel manual is stating cooldowns for a loaded vehicle. Not a regular 2.0 with some cargo casually driving down the highway.

stop the insanity.

every damn truck you see on America’s highways are turbocharged but suddenly Jeep owners need J-Scan to monitor EGT’s (rolls eyes).

id be willing to bet more than half the people concerned about this topic run 87 and swear it’s okay to do so.

you wanna cooler EGT’s and a cooler turbo? Cut the shit and run 91/93. End of thread.

LOL dude thank you! Those were all I could think about in this entire thread. I actually installed the Apex'i turbo timers in two vehicles... 2-3 decades ago.

I also had EGT probes/gauges in them! I'm dying over here!

Turbochargers have been fairly mainstream for half a century and the technology has come a long way (same for synthetic oils).

Dead on about premium fuel too.

 

[croppz]

This thread is ridiculous.

Y'all gunna be installing A’Pexi turbo timers next as if it’s 1998.

diesel and 2.0 are not the same at all. Plus that diesel manual is stating cooldowns for a loaded vehicle. Not a regular 2.0 with some cargo casually driving down the highway.

stop the insanity.

every damn truck you see on America’s highways are turbocharged but suddenly Jeep owners need J-Scan to monitor EGT’s (rolls eyes).

id be willing to bet more than half the people concerned about this topic run 87 and swear it’s okay to do so.

you wanna cooler EGT’s and a cooler turbo? Cut the shit and run 91/93. End of thread.

People are ridiculous

The fans will continue to run for a minute or two after shutting off IF the temps are that high

I’ve sat in traffic for an hour in 95 degree heat in my 2.0t then shut my jeep off right after and the fans didn’t run. It’s good to go. Just shut the damn thing off lmao. They are liquid cooled.

 

[BDinTX]

Can anyone with a Scanguage or other comparable device, provide us all with this excellent info ?

I have a Banks iDash gauge connected but there isn’t a BID for anything turbo temp related. I haven’t tried JScan as someone suggested but might do that. I figured if that data was on the CANBUS the iDash would be able to display it. But since I can actually display more information when I specify an ecodiesel it’s very possible JSCAN can show it.

 

[zouch]

correct, there isn't a BID specifically for the Turbo Temp for a 3.0 either.
Banks suggested the EGR1/1 for monitoring EGTs, and they do have Turbine Inlet & Outlet Temp options for those who care.
https://docs.bankspower.com/bids/files/PID_2020_Jeep_Wrangler_3_DOT_0L_V_311_E.html

I have a Banks iDash gauge connected but there isn’t a BID for anything turbo temp related. I haven’t tried JScan as someone suggested but might do that. I figured if that data was on the CANBUS the iDash would be able to display it. But since I can actually display more information when I specify an ecodiesel it’s very possible JSCAN can show it.

 

[THAW]

This thread is ridiculous.

Y'all gunna be installing A’Pexi turbo timers next as if it’s 1998.

diesel and 2.0 are not the same at all. Plus that diesel manual is stating cooldowns for a loaded vehicle. Not a regular 2.0 with some cargo casually driving down the highway.

stop the insanity.

every damn truck you see on America’s highways are turbocharged but suddenly Jeep owners need J-Scan to monitor EGT’s (rolls eyes).

id be willing to bet more than half the people concerned about this topic run 87 and swear it’s okay to do so.

you wanna cooler EGT’s and a cooler turbo? Cut the shit and run 91/93. End of thread.

JScan is good for determining that too:

MODULES -> Powertrain Control -> LIVE DATA -> KNK_TOTAL_RETARD (ENGINEDEG)

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