Engine/Transmission (1994 - 1998) 140 Degs. constant engine temp.

[Highfinance97]

I was racing a VW on the interstate yesterday and my engine temp got a little above 190 probobly 205-210 so i decided to drive normal and it went back down to 190.

when i got off the interstate and started driving around town it stayed at 140-150 , i got to my destanation, shut it down, and left.

about an hour later got back on the highway and it stayed between 140-160



Now last night i drove about 10-15 miles on the Interstate and then on some back roads with some hills, and the only temp. i saw was 140



the gauge does moves very little, but it moves







What Gives



Michael

 

[tp0d]

Stuck t-stat or bad engine temp sensor... I would bet bad t-stat tho, how old is it?



-j

 

[Highfinance97]

The sender is new, ill check the t stat today



Michael

 

[McCRam]

I'm curious to hear what you find out. I'm having the same problem, except I'm on my second tstat.

 

[Highfinance97]

I'm curious to hear what you find out. I'm having the same problem, except I'm on my second tstat.

Im heading to work now ill start on it asa i get home so ill keep you updated

Michael

 

[Highfinance97]

This was an easy fix :-laf the rubber gasket was ripped and part of it was stuck inbetween the t-stat so it held it open :-laf



McCRam as for you i dont know what to tell you since your on your 2 stat.





Michael

 

[McCRam]

Thanks for the update. Glad it was an easy fix for you. I have been perplexed. This one worked fine for a while, and now it acts like the tstat is stuck open again. Ill probably pull it out and test it. I'm going to stop and get a new temp sensor and tstat tomorrow so I have all the parts I need this weekend.

 

[Highfinance97]

Where are you getting your stat. from??? is it a cummins part #???

did you replace all the rubber seals in the housing??

stat#5014568aa

rubber seal#4797255

rubber seal#4761291



Michael

 

[McCRam]

I don't have the part #'s on hand, but they were cummins parts. I'm going to get my infra red temp gun out tomorrow to see if the sensor is reading properly. I hear the fan kicking on and off like normal, even when it is reading 150 degrees.

 

[McCRam]

With the infra red gun all temps are around 180 190 degrees. So since the gauge is reading around 160, I am going to assume that the sender is bad, and replace it. I'm still not positive about this.

 

[Highfinance97]

let us know



michael