2001 4 Runner just clicked off 300K and has started to run warm, I found a broken radiator cap initially and replaced it, This did not solve the problem.
When I say warm I've driven this truck about 80K miles and it has never ran more than 205, and lives around 201 always. (Reading off the OBD2 port off of the torque app)
Also hot is it will idle in the driveway for 30 mins. and ride at 190* when I take it out for a drive it slowly climbs to about 215* within the 10 mile around town loop.
So far I have a new Aisin fan clutch, replaced a missing lower radiator shroud section, replaced thermostat with a factory Toyota (installed correctly), and a lower radiator hose because I was there.
Ran a compression test, Plugs all look good, compression was 180 across the board.
Did a radiator pressure test and it held 15 psi long enough for me to get bored waiting. ( probably 20 mins.)
I have not done a leak down test yet, I don't have a tester, and can't find one local to rent.
The thing leading me towards a head gasket is it has started to drink coolant, It seems to empty the overflow bottle in about 5-8 days of around town driving.
(I did check the bottle for leaks, It has none) My commute is less than 5 miles so I'm still able to hobble around town in it and keep it under temps.
One other thing, About 20K ago it got a timing belt set, water pump, thermostat, radiator. At that time it did not over heat, the water pump just started leaking, and has run fine from then to now.
I have a new water pump sitting on the bench on the bench.
Cliffs.
300k 5VZ-FE runs hot, may need head gaskets.
Have not done a leak down yet, should I?
When I say warm I've driven this truck about 80K miles and it has never ran more than 205, and lives around 201 always. (Reading off the OBD2 port off of the torque app)
Also hot is it will idle in the driveway for 30 mins. and ride at 190* when I take it out for a drive it slowly climbs to about 215* within the 10 mile around town loop.
So far I have a new Aisin fan clutch, replaced a missing lower radiator shroud section, replaced thermostat with a factory Toyota (installed correctly), and a lower radiator hose because I was there.
Ran a compression test, Plugs all look good, compression was 180 across the board.
Did a radiator pressure test and it held 15 psi long enough for me to get bored waiting. ( probably 20 mins.)
I have not done a leak down test yet, I don't have a tester, and can't find one local to rent.
The thing leading me towards a head gasket is it has started to drink coolant, It seems to empty the overflow bottle in about 5-8 days of around town driving.
(I did check the bottle for leaks, It has none) My commute is less than 5 miles so I'm still able to hobble around town in it and keep it under temps.
One other thing, About 20K ago it got a timing belt set, water pump, thermostat, radiator. At that time it did not over heat, the water pump just started leaking, and has run fine from then to now.
I have a new water pump sitting on the bench on the bench.
Cliffs.
300k 5VZ-FE runs hot, may need head gaskets.
Have not done a leak down yet, should I?