I have a 1998 toyota tacoma 3.4L V6. I have noticed coolant under the truck. The radiator is full and the reservoir is half full every time I check it. Looked everywhere for coolant leak cant find one with and without it running. When my truck is cold my belts make a very quiet squeal until warmed up its been about negative 10. Temp gauge works fine. Where is the coolant coming from? I replaced the timing belt and water pump and 100,000 miles and now I am at 157,000. Thanks

-Evan

 

Most obvious is the hoses and the water pump after pulling the timing cover. Wipe everything down under the rig and look for the run line of coolant.

Also, look through the wheel wells and between the firewall and engine focusing on the head/block interface. You're looking for wet spots and/or crusty red or green deposits depending on what anti-freeze you are using.

How does your oil look on the dipstick and through the valve cover oil fill hole?

 

Oil looks fine. What would happen if I drove and water pump quit working? I have to make a 100 mile road trip this weekend no time to replace it yet.

 

Your engine would overheat..no water no cool.

 

evanh3,

And, then potentially this:
http://www.ultimateyota.com/index.ph...6&topic=2241.0

 

I know it is pretty basic but are you sure that it is coolant and not your evap drain hose?

 

Ya its coolant. Sometimes there is coolant under truck other times none. I was looking around online. Someone said they had issues with gasket between water pump and engine. I took off timing belt cover and didn't see anything out of the ordinary.

 

Good on the WP. Grab a mechanics mirror and flashlight for a good inspection of the head block interface, hoses, radiator, etc. Some have had the coolant recovery tank crack too.

Once you find the area where the leak is originating, we will likely have more suggestions as to probable cause.

 

This doesn't make sense. You observe the same amount of coolant in radiator and reservoir yet there is coolant on the ground? Or are you adding coolant when you see coolant on the ground?