Not sure what's going on here when truck gets to operating temp the coolant bubbles out the expansion tank sometimes til it overflows. Ive changed radiator cap as to see if that fixed but nothing. Truck doesn't overheat I'm not sure what to check. Any help would be great.
Coolant bubbles out of expansion tank
- Thread starter wbfischer
- Start date
kp.taco
Well-Known Member
What does the oil on your dipstick look like? Hopefully not tanish milky looking.. is your truck a 2005?
Truck is an 05 yes. Oil looks fine. Truck runs fine as well no weird noises misfires or anythinf of the sort. I know of the head gasker issues for this model year. I'm debating on just selling the truck amd getting something else while it runs, but I own it so have a hard time justifying a new payment
Bojangles
Well-Known Member
Makes me wonder if the water pump is doing its job... Coolant not cycling would get toasty and overflow maybe?
Im not well versed in the cooling arena, sorry.
Does the temp vary alot when u are on highway vs city streets?
The stock needle is ****, id suggest checking temp via scangauge2, ultragauge, or a phone app like torque
Im not well versed in the cooling arena, sorry.
Does the temp vary alot when u are on highway vs city streets?
The stock needle is ****, id suggest checking temp via scangauge2, ultragauge, or a phone app like torque
This is what biggest fear honestly
I'm using torque now the temp stays right at 190 to 192 at all speeds
Crawdad
Well-Known Member
A compression to coolant system break in the head gasket makes bubbles...
Gaskets aren't terribly priced, elbow grease is cheap... keep her ticking with no payments!!!
texasred
Well-Known Member
It may be a pinhole leak that a compression test wouldn’t catch.
Concur with Crawfish. Gaskets are a cheap toss at it. Just reserve an afternoon and get a bloody good torque wrench.
I have a 2008 Toyota Tacoma with 196k doing the same thing. Exactly what people have said in posts a compression to coolant head gasket leek causes bubbles. My temperature gauge seems to be stuck in the middle so I didn’t notice that it over heated when the coolant bypass pipe broke off in the back out of plain view!
Which pipe are you talking about? I use the torque app and havent seem temp go over 192 I was going to take truck in to get fixed. It runs fine other than I know what the coolant is doing
Also how did you know the truck overheated if the temp needles didn't soar??
allenleevdb
New Member
i had this same issue with my ‘05 Prerunner what i ended up doing was “burping” the coolant return hose. you can feel the bubbles as you add pressure to the hose. just make sure that you open up the coolant tank to be able to push the air through it. that fixed the problem for me at least
WHITEY 4X4
Member
i had this same issue with my ‘05 Prerunner what i ended up doing was “burping” the coolant return hose. you can feel the bubbles as you add pressure to the hose. just make sure that you open up the coolant tank to be able to push the air through it. that fixed the problem for me at least
i had this same issue with my ‘05 Prerunner what i ended up doing was “burping” the coolant return hose. you can feel the bubbles as you add pressure to the hose. just make sure that you open up the coolant tank to be able to push the air through it. that fixed the problem for me at least