5.0L (1979-1995) MustangTechnical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.
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So i am in Oklahoma and it has been near 100 with heat index in the 105-110.
I noticed on the highway with ac on, the car will get to the "L" on the gauge after a 30 mile drive. i replaced t-stat with a 160* and flushed radiator and it did not change at all. Yesterday ambiant temp was 85* and drove 10 miles and had it back up to the "a" of normal.
i know the manual says
If the guage is in the "NORMAL" range, then engine temperatures are within the operating temps. Only once the gauge moves to the red indicator line, to the right of "NORMAL", has the engine exceeded normal operating temps.
But it seems to be running to hot for my liking... any thoughts?
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first thing id do is go back to a stock thermostat
This ^^^, then give the system a good flush. If still hot, then start looking for soft hoses that can collapse, how old are your pump and radiator?
Also, as blue said, stock gauges can be off by a lot. Get an infrared thermometer and shoot the T-stat housing when it's hot. Then compare that to your gauge.
306 with all bolt ons, letter cam, ported E7's, T5 swap, full exhaust, 3:55's, 2" drop, and the worst paint you'll ever see or feel.
Dyno'd 300/316, 2745lbs-track scale
Best ET………12.4@108, 1.66 60ft on 8" ET Drags.
24 mpg (combined)
Last edited by 88 orangepeel notch; 07-31-2014 at 08:53 AM.
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