01-25-2014, 11:12 AM
Join Date: Jan 2014
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Hey guys..new here and to diesels..so need some help. I picked up a 97 F250 7.3 229k miles, runs great. One thing I noticed while making the 1hr drive back home the coolant guage didn't really budge off C. Also I was getting terrible gas mileage almost a qtr of a tank to drive 49 miles
So I figured a new thermo was in store..
I bought one (195 degree) and slapped her in...the truck still ran very cool. I took the truck around the block and got the guage to get the in normal range but it was sitting on the N so still near the C. I come to find out I pulled out a 203 degree thermo which I have read is better to run. But I a not sure if this was bad or not..,
I tested the 203 degree in boiling water on the stove and it seemed to function properly. M
My question is this...was the old thermo bad? And with the new thermo Is it working correctly bc the guage is at least in "normal"
Is there a way to test the guage??
The temps are fairly cool in in ga. Probably mid 30's. any help would be greatly appreciated
Next topic was fuel mileage anything I should do to help increase the fuel mileage? Truck is stock and seems to be well cared for..just horrible gas mikeage almost a half a tank in 60 miles
Fuel filter?? What should I check
Last question is I have the water in fuel light..seems the sensor is bad..where can I locate this to fix? Thanks