7.3 temp gauges - Ford Powerstroke Diesel Forum
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Old 09-14-2013, 10:04 AM
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7.3 temp gauges

I just bought a set of gauges for my 2000 f250 7.3 and I was wondering where should my temps. Be running at normally I have the exaust temp, trans temp, and fuel pressure gauges.
And I was wondering what degress do I not need to exceed.
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Old 09-14-2013, 11:56 AM
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unloaded with a 4" lift and 35's with baby swamps injectors at ~70 my egts are around 600 and my tranny temp is around 200. It takes my tranny quite a long time it seems to warm up, but ive never had a tranny temp gauge before this one so i guess its normal.

You can let your egts hit 1250 all day long from what ive gathered but much higher than that for any length of time you should drop a gear.
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Old 09-15-2013, 09:41 AM
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Trans takes 20-30 min to warm up, you are heating up almost 5 gal of ATF, or in my case over 5 gal. Anything over 200 degrees means you need more cooling. I use 215 to 220 as my pull over temp unless I am getting ready to crest the top of a hill. Cure for this is the True Cool Max ( Ford V10 Cooler) or the 6.0 cooler.

EGT's, most use 1250 as redline, but again if you are cresting the top of a grade I would stay in it. It takes over 2 min to heat soak a piston, so brief runs exceeding 1400 degrees is survivable, contrary to internet myth where the engine explodes at 1251 degrees. I have never had mine reach 1250, IIRC 1200 was the highest I hit towing heavy up a very long steep grade. Best cure for high EGT's is more air flow in and out, followed by water meth injection.

Boost should be one of your gauges, I would use boost before FP but if you can have both even better. Stock 15-17 psi is about all you will see. A tuned truck can see triple that, just remember anything over 25psi is shortening the life of the stock turbo.

FP will vary, but 60-70 psi is normal.
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