Running cool, is this a problem
Thread Starter
TECH Fanatic
iTrader: (7)
Joined: May 2003
Posts: 1,602
Likes: 0
From: Valley Center KS
Running cool, is this a problem Yesterday I took my truck on a 200+ mile drive (first real trip in the 68 w/5.3L)
Anyways, while on the freeway it ran right at 165 degrees the whole time. I was not logging anything and it was running great. I was watching my gas guage, and I was probably getting about 20mpg, but I got to thinking.
Is the engine running too cool? Would it run a little leaner (aka better gas mileage) if it was tuned for this cool? Right now, the engine is internally stock, and the ECM is stock (except for deleting the emissions crap and VATS)
Anyways, while on the freeway it ran right at 165 degrees the whole time. I was not logging anything and it was running great. I was watching my gas guage, and I was probably getting about 20mpg, but I got to thinking.
Is the engine running too cool? Would it run a little leaner (aka better gas mileage) if it was tuned for this cool? Right now, the engine is internally stock, and the ECM is stock (except for deleting the emissions crap and VATS)
