please help
Hall Of Fame
Joined: Aug 2007
Posts: 10,923
Likes: 19
From: NM
How do you know you have no pressure? If you have been driving the truck for a while after a water pump change without pressure you should be having problems that indicate no pressure. Maybe Crazy can tell me if I am wrong, but the pump doesn't build up the pressure, the change in temperature does, the pump just circulates the coolant.
The cap may not be hot to the touch on a fully functioning system.
Rookie
Joined: Dec 2008
Posts: 88
Likes: 0
you cant have both on psi and no leak if temp is running at half gauge scienct you have heat psi will build if its not then YOU HAVE A LEAK you need a psi tester. the psi is going some wear tester shoild also test caps if thear is an auto zone near you they rent them
Thread Starter
|
Rookie
Joined: Jan 2009
Posts: 92
Likes: 0
From: quaker street new york
i think it is my heaer core i get heat when driving nice and hot but when i stop its warm can this be even tho i have clean water coming out both in and out let of the heater core ??
Thread Starter
|
Rookie
Joined: Jan 2009
Posts: 92
Likes: 0
From: quaker street new york
no leaking anywher my heat is good when driving but not when stoped the pressure is good was tested by a mec good shop around home the cap was tested too im still gussing heater core i might be wrong but only thing i can guess