cooling system overpressurization
#1
cooling system overpressurization
Im having this problem. In the morning the up and lower radiator hoses are rock hard on cold start in till engine reaches 190℉ then they soften to normal and its cause my radiator to leak when cold.
And this is a 1991 pickup 3vze new all aluminum radiator new hoses new water pump fresh coolant. And Tstat that has 10,000 miles on it
And this is a 1991 pickup 3vze new all aluminum radiator new hoses new water pump fresh coolant. And Tstat that has 10,000 miles on it
Last edited by Turbopickup24; 07-29-2014 at 11:10 AM.
#6
Trending Topics
#8
#9
Registered User
iTrader: (1)
Join Date: Mar 2013
Location: Mobile, Alabama
Posts: 2,121
Likes: 0
Received 0 Likes
on
0 Posts
Verify that's it's building pressure when you take the cap off the pressure should release. This is the first I've heard of a cooling system build pressure with the engine off. Pressure builds with heat.
#10
Registered User
Join Date: Mar 2008
Location: Temecula Valley, CA
Posts: 12,723
Likes: 0
Received 4 Likes
on
4 Posts
It should, when warm, vent pressure and coolant to recovery tank, then suck the coolant back in as it cools off.
If it's building pressure up when cold starting, I'd suspect a head gasket issue that 'fixes' itself once warmed up and things 'expand'.
If it's building pressure up when cold starting, I'd suspect a head gasket issue that 'fixes' itself once warmed up and things 'expand'.
#11
I let it cool while at work and before i pulled the cap i felt the hose and it was super soft and ran it till it warmed up with cap off and it did fine. Added the cap and it slowly built pressure to normal. I think it cool and pulls coolant in and doesnt let it exspand into exspansion tank when its hot causing a over full cooling system. Ill get some block tester tomaro. And test the coolant for exhaust gases and pickup a radiator cap
Last edited by Turbopickup24; 07-29-2014 at 11:40 PM.
#12
idle control valve clogged
possible solutions: wrong psi rad cap (should be 13psi), thermostat is wrong temp (should be 180), head bolts need to be retorqued
disregard title due to post in wrong thread.
disregard title due to post in wrong thread.
Last edited by dwj7386; 03-03-2016 at 11:42 AM. Reason: possible solutions
Thread
Thread Starter
Forum
Replies
Last Post
Rickstwowheels
Newbie Tech Section
6
09-09-2015 06:12 PM