AZ-Chris
Well-Known Member
Diesels run hotter than gassers. For years, Truckers have idled their engines when making simple refueling stops to mitigate heat soak.
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This is why diesels run hotter than gassers.. . .
I do know diesels will get more efficient the warmer they run - all compression engines do . . .
This would seem to make remote start illegal to use.Sounds like a great way to get your Jeep stolen, not to mention that leaving your car running unattended is illegal in most states.
Florida Statute 316.1975: A person driving or in charge of any motor vehicle may not permit it to stand unattended without first stopping the engine, locking the ignition, and removing the key. A vehicle may not be permitted to stand unattended upon any perceptible grade without stopping the engine and effectively setting the brake thereon and turning the front wheels to the curb or side of the street. A violation of this section is a noncriminal traffic infraction, punishable as a nonmoving violation as provided in chapter 318.
I absolutely would order a diesel again. I've only had mine for a few months but I've had it out on the trails in the mountains several times. Heading up I70 west out of Denver it just chugs right up the hill with no real effort. My 3.6 JK would be screaming at high RPM up the hill. And once I get to the trails it crawls over obstacles like a tractor.This has been a very informative thread. I truly appreciate hearing everyoneās thoughts on this. I have been planning to place an order for a ā22 diesel when it opens. I would love to see a vote of those participating in this as to whether you would buy the diesel again, and if not what engine would you get?
Heck of a good first post! I'd been wondering if a turbo blanket might help but if you're correct it would probably make things worse. Great tip and welcome to the forum!First post but I have been a long time reader of this site. Lots of good info and peeps all around. I wanted to share something I have found on this issue. I tend to own more diesal vehicles then gasser so I have had my share of experiences. The Heat soak issue is not uncommon in the new DEF diesel. They run them hotter then the older generation to pass the emissions numbers they need. This way there using less def to burn the particulates out of the system. They achieve this by running smaller variable vane turbos and intercoolers among other meens.
To get to the point, I have had the limp mode affect me twice on slow crawl trails on hot days and once waiting in traffic setting there idle for some time. I have found that if you are rolling you can put the trans in neutral and pump the pedal and then put it back in drive. This only works if you are rolling but it does reset the limp mode that is being enforced on the throttle control sensor.
The heat build up in the small turbo and the undersized intercooler is triggering the Turbo variable vane sensor and forcing a limp mode scenario. the EGTs seem to build quickly when the the turbo is not spinning more then 10psi . A larger intercooler would help this issue out but I haven't seen to many offerings on this yet. any way I hope this helps someone who is jamming up an onramp and runs into this situation and are not forced to find the emergency lane.
Minor correction to help foster understanding -First post but I have been a long time reader of this site. Lots of good info and peeps all around. I wanted to share something I have found on this issue. I tend to own more diesal vehicles then gasser so I have had my share of experiences. The Heat soak issue is not uncommon in the new DEF diesel. They run them hotter then the older generation to pass the emissions numbers they need. This way there using less def to burn the particulates out of the system. They achieve this by running smaller variable vane turbos and intercoolers among other meens.
To get to the point, I have had the limp mode affect me twice on slow crawl trails on hot days and once waiting in traffic setting there idle for some time. I have found that if you are rolling you can put the trans in neutral and pump the pedal and then put it back in drive. This only works if you are rolling but it does reset the limp mode that is being enforced on the throttle control sensor.
The heat build up in the small turbo and the undersized intercooler is triggering the Turbo variable vane sensor and forcing a limp mode scenario. the EGTs seem to build quickly when the the turbo is not spinning more then 10psi . A larger intercooler would help this issue out but I haven't seen to many offerings on this yet. any way I hope this helps someone who is jamming up an onramp and runs into this situation and are not forced to find the emergency lane.
As (e - your) linked Engineering Explained video points out, the blanket could help since it prevents thermal exchange between the exhaust and the inlet. However, the oil temperature consideration can't be discounted, since oil is the only thing cooling the turbo and one of the primary reasons that a person needs to provide a thermal cooling period for any turbo.Heck of a good first post! I'd been wondering if a turbo blanket might help but if you're correct it would probably make things worse. Great tip and welcome to the forum!