fuel cooler?

Our summer over here and have been hitting over 100*F the last week and fuel temps have stayed around 105*F this is the hottest summer I can recall for years with humidity up around 90-95%,very turbo unfriendly give me winter any day.(we don't get snow)

 

In your case I'd say you'd benifit from a cooler. Cat says your fuel temp can get to about 180 before its a problem (180 is roughly the temp at which the engine derates) but I have seen engines that have injector problems that go away after fitting a cooler but they never got to the derate temp once.

I'd also like to add a truck with dual pick up/dual return fuel systems can run fine without a cooler but single pickup/return systems usually need one (in Aus's hot climate at least).

 

I'd get one with a fan, since you aren't on the road as much.

Seen some that use a coolant as the heat exchanger. Don't know that I'd like that one. That'll mess things up in a hurry, if the core lets go inside.

 

I installed one on my 03 6nz between the fuel filter and fuel pump. I think it helps and it cheats the ecm b/c it measures the fuel temp before it goes through the cooler.

 

no additional fan, just bought an off the shelf tranny cooler and mounted it below the AC condenser. just uses airflow and engine fan when its on. got to typing so fast i didnt get the pete part in between the 03 and 6nz, hope it helps, i know i dont have any trouble keeping up with 'bigger' trucks

 

wouldn't it be more beneficial to cool the fuel before the sensor

 

you might be right on cooling the fuel before the sensor, but I am happy with the way that mine pulls, it pulls better than a stock c-16. I see that I have a whole lot of reading to do, just spent about 2 hours reading and still have a lot to learn about these electronic engines. I spent all my time working on 2 stroke detroits, so I am kinda lost on electronic motors. My logic was the sensor thinks the fuel is hot, so it needs to pump more to give the power of cool fuel.

 

do you have any before/after fuel temps ?