What is normal

(eric_ms) · (eric_ms) **Join Date: Apr 2007** 05-30-2007, 7:21 AM

What is the normal temp at idle speed for a PCM 351 5.8 liter?

(jonblarc7) · (jonblarc7) **Join Date: Jul 2006** 05-30-2007, 7:23 AM

Mine runs about 160

(denverd1)

loaded about 160.

(eric_ms) · (eric_ms) **Join Date: Apr 2007** 05-30-2007, 7:43 AM

WHAT ABOUT RUNNING?

(sinkoumn) · (sinkoumn) **Join Date: Jan 2007** 05-30-2007, 8:13 AM

What temp is yours running at Eric?

(eric_ms) · (eric_ms) **Join Date: Apr 2007** 05-30-2007, 10:53 AM

When I am running with a full load it is 160+ but when I come off plane it is any where between 170 and 175.

(wake1823) · (wake1823) **Join Date: Dec 2005** 05-30-2007, 11:05 AM

when was the last time you changed your impeller? A worn impeller will cause the motor to run hotter at idle.

(eric_ms) · (eric_ms) **Join Date: Apr 2007** 05-30-2007, 11:29 AM

I just changed it and my thermastate

(rallyart) · (rallyart) **Join Date: Nov 2006** 05-30-2007, 12:28 PM

You can get the temperature spiking up a to 175 when you have been running hard and slow back to an idle. The power you were generating is still heat soaking into the engine and at idle it won't flow as much so it does not cool as quickly.
After just a few minutes though, the temperature should go back to the thermostat setting of 160.