WyoSyclone
Active member
Just an FYI for anyone else dealing with an engine that seems to be running a bit warm.
My Sy has always ran about 203-208 degrees... a bit warmer than what I would like. When I first got it I changed the thermo, changed coolant, and took it to a GM dealer and had them put it on their radiator flush/filter machine for 1/2 an hour. I thought all was good.
This past week I drained the system to hook up my Autometer temp gauge. I decided to pull the thermo and check it in a pot of water on the stove to see what it was doing. The second I pulled it out I noticed it looked like this....
See how the thermo element is sitting at an angle? looking at it further I decided it was manufactured with a defect. Sure enough, took the pan of water up to 200 degrees and the thermo only opened about 1/3 of the way. No wonder I was running warm.
Put in a second, new thermo and the truck is now running too cool on the short test run I took. I'll probably have to go up to a 180 thermo.
Another strange side effect is that it took almost another full quart of coolant to fill the Sy back up. I'm thinking the restrictive thermo was keeping an air bubble somewhere in the system. All is good now and I feel much better about it.
Just wanted to put this out there so we're all reminded to inspect "new" parts before we install!
My Sy has always ran about 203-208 degrees... a bit warmer than what I would like. When I first got it I changed the thermo, changed coolant, and took it to a GM dealer and had them put it on their radiator flush/filter machine for 1/2 an hour. I thought all was good.
This past week I drained the system to hook up my Autometer temp gauge. I decided to pull the thermo and check it in a pot of water on the stove to see what it was doing. The second I pulled it out I noticed it looked like this....
See how the thermo element is sitting at an angle? looking at it further I decided it was manufactured with a defect. Sure enough, took the pan of water up to 200 degrees and the thermo only opened about 1/3 of the way. No wonder I was running warm.
Put in a second, new thermo and the truck is now running too cool on the short test run I took. I'll probably have to go up to a 180 thermo.
Another strange side effect is that it took almost another full quart of coolant to fill the Sy back up. I'm thinking the restrictive thermo was keeping an air bubble somewhere in the system. All is good now and I feel much better about it.
Just wanted to put this out there so we're all reminded to inspect "new" parts before we install!
