Engine/Transmission (1998.5 - 2002) I am having small temperature variations

[Silver Bullet Ram]

Gauges always ran shy of 190. It hits 190 and goes a little pass it at times then comes back down. I have noticed the truck hasn't been running like she used to and the fuel mileage is down. Any ideas? VP-44 tanking out on me? Thanx in advance.



Gary

 

[Beast2B]

Recent maintenance done? Possible bad fuel if it came on quick, fuel filter if it creeped up on ya. Any codes set? Lift pump pressure?

 

[Silver Bullet Ram]

I have been thinking about chaning the filter again. I usually change it ever other oil change. I know I am bad, but no gauges. I don't want to tamper with anything until it is out of warranty. It looks like I am going to have to get them anyway.



Gary

 

[Guest]

Mine use to run @ straight up 190 all the time, after I put a few miles on the truck shes cooled 10 degrees constantly

 

[Silver Bullet Ram]

I changed the fuel filter and it still flucuates. I took it out and ran it hard, 100mph and the temp climbed past 190 to about 200. As soon as i let off the gas it came back to normal. Maybe a weak thermostat?



Gary

 

[bmoeller]

Originally posted by Silver Bullet Ram

Maybe a weak thermostat?



Gary

Quite possible.

 

[Silver Bullet Ram]

It has 86000 miles on it too. That would explain the fuel mileage issue too.



Gary

 

[cumminspwr01]

The 180* thermostat is a 3967195 or the 190* is 3937171 I run the 180 in the summer and the 190 in late fall and all through the winter. The 180 just doesnt put enough heat in the cab for our winters.

 

[dlange]

I had similar problems with the same temps. Turned out the thermostat spring was not opening correctly. I would change the thermostat for safty. I did, and it solved my problem.

 

[Silver Bullet Ram]

Thats what I will do. I was wanting to change the coolant anyway.



Gary