Thermostat?

Reply Subscribe

Thread Tools

Search this Thread

February 5th, 2023, 4:12 PM

AriesEd68

CF Beginner

Thread Starter

Join Date: Nov 2022

Posts: 4

Likes: 1

Received 0 Likes on 0 Posts

Thermostat?

I have a 1988 Chevy 2500K 4x4 3/4 ton pickup with 5.7 L 350 V8. I notice the temperature gauge does not rise above around 150 even after driving for 30 minutes or more and the Service Engine Soon light comes on by then too. Would that mean a new thermostat is needed and if so, which number between a 195 or 160. I’ve never changed one myself but hoping I can without paying someone.

Reply Like

February 5th, 2023, 5:07 PM

Rednucleus

CF Veteran

Join Date: Jul 2014

Location: Marysville, WA

Posts: 1,773

Likes: 524

Received 204 Likes on 178 Posts

When my 93 did this it was the sensor, not the stat

Reply Like

February 6th, 2023, 8:41 AM

chasrahm

CF Beginner

Join Date: Feb 2022

Posts: 15

Likes: 2

Received 0 Likes on 0 Posts

with my 97 silverado, it was the engine block temperature sending unit for the gauge. I pulled the thermostat and tested it in water and it opened at 195 as it should.