Quote:
Originally Posted by Old Mechanic
Now if you climb a steep grade like before what does it read? That's a stress test and it will probably go higher than other times. When that reading (after climbing a steep grade) causes the temp to skyrocket but there is no air bubble and the cooling system operates normally otherwise, you need a radiator.
regards
mech
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Another possibility is that his cooling fan isn't coming on as it should.