What are the normal EOT and ECT TEMPS?

[-CoStep-]

Test driving a truck in the morning and I would like to know what are the normal temps? I know I shouldn't expect more than a 15* diff correct?

[Tuscany]

ECT depending on where you live with winter approaching and all will vary. Mine for instance has been fluctuating between 186*f and 192*f depending on ambient temps outside. EOT should stay under 10* higher than ECT. So for instance if your ECT is 188*f than your EOT should be under 198*f. Even if it is 10* or so I would either be trying to wiggle the price down some more as you will soon find yourself doing a oil cooler rebuild. Or depending on how high it is I would walk away. Point is there are WAY to many of these trucks on the roads to worry about buying a problem with yours.

[mhatlen]

^^^ That pretty well sums it up. If it's a stock tune and everything is in good condition 5*-6* degrees delta is what you should see @ 65 mph on flat road.

Also pop the hood and feel the engine to make sure it hasn't been warmed up before you get there to mask any injector issues.
Good luck on the shopping.

[amdriven2liv]

What are you going to use to check these temps?

[-CoStep-]

I have a buddy going with me that is a mechanic an he's bringing his scanner, not sure which brand it is. I'm really going to test drive this truck just to get to know some of the basic parameter numbers to look for, it's a high mileage truck an ill only buy it if I can Get if for a steal

[amdriven2liv]

Test FICM readings first thing. When cold. Also, test the FICM when pulling a grade or WOT.

This drive should take you at least an hour.

You are going to probably freak the seller out with all the stuff you are going to check! LOL