indianajeepman

i have new upper lower hoses and a new t-stat and it still over heats its the closed system and i think the cap is bad so i ordered a after market bottle and cap but idk if there is anything else

mobilecherokee4

how hot does it get? does it stop at a certain temp? if it does what is it?

jd4x426

did u put the same thermostat back in maybe you got the wrong thermostat or just one the crappy parts store ones that dont work

indianajeepman

i replaced the t-stat and cap a few months ago it would do ok bc my bottle i did not know was cracked so it still over heated and nowi had a newer bottle on it was fine till the cap went bad and now im back to the 21 year old cap it did before i forgot to put that cap all the way on stop at about 200 bc i had a 160 degree t-stat in it. could it be my 21 year old radiator needs replaced? i will get the new bottle and cap if it still heats up i will put my 88s radiator in it see if that helps.

offroadohio

The closed systems are known for running warm. 200 degree's is normal for them.
I converted mine to an open systema nd it still runs around 200 it just easier to fill with coolant now. Everything is BRAND new in mine from waterpump to radiator and all hoses including the heatercore and heater hoses

mobilecherokee4

yeah mine runs between 200 and 210, jeeps run the best when they are at those temps

motorheadmoe

my sisters comanchie had the same problem it was the headgasket between the no.4&no.5 cylendar it would let a little steam out by the exhaust manifold

indianajeepman

ya it builds a lot of pressure enough to shoot off the cap and even make the bottle expand

offroadohio

if it is popping the cap/exspanding the bottle then you must definately have a head/head gasket issue

indianajeepman

water pump was it now its fine