Upper Radiator Hose? - JeepForum.com

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post #1 of 5 Old 08-01-2011, 11:14 PM Thread Starter
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1995 YJ Wrangler 
Join Date: Jan 2011
Location: Highland Mills
Posts: 54
Upper Radiator Hose?

Just bought a 98 limited 5.2 with 175,000 miles. yes i know what your thinking, why would i buy a 5.2 with 175,000 miles. well, i only paid $650 and the body is almost mint, no leaks, no rust. tranny slips a little, but that's not a big deal right now. so here's my main concern. the upper radiator hose is completly flat at the top, whether the engine is running or not. the jeep does not overheat and runs like a champ. so for my question, is this normal? what would be the cause, how much pressure should flow through there? i'm going to pick up a new hose tomorrow. even though i don't think the hose is the problem. also i squeezed the hose while it was running and i dont feel any pressure in it. i dont think it's blocked because while it was running i had the rad cap off while i pinched the hose and the coolant overflowed from fill hole.


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post #2 of 5 Old 08-02-2011, 05:51 AM
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I am not sure how much pressure should be in the cooling system, but it is definitely not normal for the hose to be flat. When warmed up, the hose should feel firm, with a little bit flex. I would get that hose replaced, and probably the radiator cap too. Then check it again after you warm up the Jeep to make sure the system is pressurizing.

1995 ZJ 5.2L V8 318. 230,000 miles and still rollin.

List of parts not replaced yet:
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post #3 of 5 Old 08-02-2011, 02:22 PM
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1996 ZJ 
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Also, when youve got the new rad cap and hose on, wait until the Jeep is at full operating temp, then the thermostat will have opened, everything should be flowing as it should. Then give the hose a squeeze.

Just done my top hose. Be sure to make sure it seals tightly, mine wasnt and i had some odd temp readings til i realised it was leaking slightly.
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post #4 of 5 Old 08-02-2011, 02:51 PM
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As for the tranny just drop the pan and change the fluid and filter. Should help the slipping.
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post #5 of 5 Old 08-02-2011, 09:47 PM Thread Starter
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1995 YJ Wrangler 
Join Date: Jan 2011
Location: Highland Mills
Posts: 54
Problem fixed!!
It was the radiator cap, got the hose but haven't replaces it yet. feels way too soft so i think i'm gonna take it back and get a better one.
and as for the tranny i already changed the fluid and filter. probably should have adjusted the bands, but guess i'll them next time. it doesn't slip that bad just sometimes it take a few seconds too shift out of second. some days it doesn't slip at all.
anyway thank's alot guys!!
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