Just got my gauges (Quad Commander) and was wondering how long and how cool ya'll let your egt's get before shutting it down without a turbo timer. Before my guages, I always used to let it just idle for about 60 seconds or so and shut it down after normal stop and go city driving, and after the highway, let it idle about 5 minutes.

So, how cool do yall let it get? Thanks.

M Sandt

 

300 degrees

 

I go the same as Lary, 300 degrees or lower. I'll sometimes go to 250.

 

350 degrees for me.

 

Alright, good, I have been waiting until around 270-280, but it takes a few minutes to get there. I thought I remembered seeing something about 300 degrees, but couldnt remember. Thanks.

M Sandt

 

320 here and it normally cools down very quickly. Usually less than 2 minutes.

 

I just watch the gauges (I have post and pre) I will let the post get to about 350 and the pre about 275 or so and shut it down.

 

I would shoot for 300-400 degrees, otherwise you are just wasting fuel. In my owners manual it would state to let the truck idle less than (1 minute) when driving the truck unloaded in town or on the highway, where as if the truck was loaded and pulling hard then the book said to idle (3-5 minutes).

Shawn

 

I agree. If I have been running hard, I will wait a little longer - but sitting there looking to get under 300 is wasting fuel. I can't tell you how many trucks I see pull into a parking spot and do an immediate shut down. Makes me cringe.

 

I shut down at 300 degrees. Only takes a minute or so. Ther best part of having gauges is that you don't have to guestimate your cool down time, it's there for you to look straight at, and get your cool down right. While the 1 minute cool down advice of the manual for an unloaded truck may be very close, the 3-5 minute latitude when operating loaded is truly not a good reference. I have never had to wait 5 mins for cool down, in fact 3 minutes is about the max I have seen. I also have watched many come off the freeway into a parking lot and shut down immediately, no cool down, but then the repairs bills are theirs not mine.

CD

 

Those are general guidelines.

I have noticed that in the summer mornings (80-85F), I have to idle 15-30 seconds to hit 300F. In the afternoons (100-110F), if I can get some idle time driving through a parking lot, i can hit 300F in ~15s, no idle time it can take ~1minute or more. In the winter, it'll cool down ~15s consistently (day temps <80F). Oh, these time/temps are with no load; just the truck.

As you can see time is not always a determining factor for cool down...that's why I always go by temp.

HTH

Tony

 

I have a 1 miles road outside my driveway, its down hill to my house. If I am doing 40 at the top of the hill and coast to the driveway I am at 275*, idle down the drive and park it usueally at 300. I have been trying to do that any place I can if I know I am going into a parking lot I let it coast.

If its really hot I put it in 2nd about 100 feet from the driveway so the rpm's jump up and pump that cool air through. Helps allot, plus u save fuel

 

my timer is set to 340

 

If I'm feeling patient, after normal driving I'll wait for it to come down to <400*, but most days I'll let it idle for a few seconds then shut her down. When towing I'll give it whatever time it takes to hit 350* then shut her down.

 

The guys that pull up and do an immediate shut down aren't doing anything wrong if they're just driving around normally. I think if it was a must they would instruct you to idle before every shut down, and have a factory installed pyrometer.