Please help.. Coolant leak.. maybe??

[David Griffith 2]

The Trac overheated on me really bad last night.. I shut it down and let it cool off. Checked, and no Coolant (it had coolant two days ago). I refilled and let it set. I started it up, drove around the block, and the temp rose again. I noticed some fluid under the truck but couldn't trace it. Trac was even steaming a little (seemed to be coming from right under the TB cover). I check again this morning and no coolant. I'm not even gonna start it up again until I can figure out where to start looking for the issue. Can someone give me some advice? Could it be the water pump? Thanks in advance for any help! :unsure:

 

[Ben Geller]

I had a hole in my upper rad hose, and didn't notice the leak because of the black mesh covering on the hose. I took that off and saw a tiny pin hole that was spraying. Might be a good start for you.

 

[Mike S 3]

any white smoke? if its leaking out to the point its dry and nothing much is on the ground or visible, i'd guess head gasket...

 

[David Griffith 2]

There was a little smoke coming from it when it over heated, seemed to be coming from under the TB cover.. The fluid on the ground is a fair amount.. Pretty worried. Hope it's something simple like a cracked hose. It ran at a good temp till the fluid leaked out. Fluid went quick, maybe 15 minutes. I've got right at 135,000 on it..

 

[rob chaw]

check the Top radiator hose or the thermostat. (i say thermostat because you said it is somewhere under the throttlebody and thats where it is.)

Good Luck Griff...

 

[David Griffith 2]

Thanks for all the help guys. Everybody I talk to seems to believe it's a hose.. Gonna try to do a visual inspection, then a pressure test. At least I've got a starting point.

 

[Roger Batts]

Most likely the t-stat housing has sprung a leak. It's a common failure with the 4.0 SOHC. Some models have the entire housing with t-stat serviced as an assembly. Others have to be assembled.

 

[EddieS'04]

You also have a coolant hose hooked to a plastic loop around the pcv vavle. Rear of driver side valve cover.