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| Overheating but not really? Air in system or other problem? Need help diagnosing (Page 10/14) |
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Mike in Sydney
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DEC 04, 04:44 PM
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If your t'stat housing needs replacing, check the PFF Mall. I think I saw a therrmostat housing on offer by PFF member Villain. ------------------
Mike in Sydney
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cebix
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DEC 05, 03:27 AM
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Thanks. I'm pretty sure that's a V6 housing, it faces the other way around. I'm going to try to fix my housing for now and see where that gets me.
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cebix
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DEC 05, 11:14 AM
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Looking for leaks and found this too. This is the hose that connects to the passenger side coolant tube in the rear (under the water pump).
Looking for a side of the road fix - I don't have the means to flush the coolant again right now since it's a pretty low point in the system. Is there a way to fix this without taking the hose off? Maybe just try to tighten the clamp, maybe move it further a little or is there no point in doing that? The same thing is on the water pump outlet... Many thanks.
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Patrick
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DEC 05, 11:27 AM
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| quote | Originally posted by cebix:
Looking for a side of the road fix ... Is there a way to fix this without taking the hose off? Maybe just try to tighten the clamp...
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Tightening the existing clamp is step one. If that doesn't stop the leak, double-clamping isn't an uncommon next step.[This message has been edited by Patrick (edited 12-05-2019).]
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cebix
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DEC 05, 11:40 AM
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Didn't think of that! Double clamping here we go. Hope that doesn't ruin the hoses.
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cebix
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DEC 11, 12:00 PM
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All right, here are the news.
Since my reservoir tank level stopped moving much if at all I guessed anything goes at this point and decided to check the reservoir hose for flow and the rad cap "hole" that goes to that hose.
The hose was clogged. Some weird shaped rubber stuff, maybe the hose is disintegrating from inside... I guess that's where the leaks came from, shouldn't have fixed them before checking out the reservoir tank issue. Hope I didn't blew anything like a head gasket but I didn't see any leaks.
Anyhow, first drive after the fix. I filled the cold tank to the halfway point between "ADD" and "FULL". Drove about 3 miles, checked the level with the engine running at temperature and it was about a half inch higher so I guess that's good(?).
However - the second I shut the engine off there was a loud "whale" sound from the radiator for about 3 seconds and in those 3 seconds the reservoir tank filled itself to the "FULL" mark. Does that sound like a clue to you guys? I guess that's not normal? Does that indicate something? Many thanks for your help, I wouldn't have gone to this level without this forum and hope to finally nail my cooling issues down.
EDIT: This was what clogged the hose, I have no idea what this stuff is on second thought... It's about 7mm in diameter.
EDIT2: Checked level 2 hours after driving - the level dropped nicely and noticeably from full to about an inch lower so I guess the hose flows good again and the rad cap is good.
 [This message has been edited by cebix (edited 12-11-2019).]
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Patrick
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DEC 11, 02:04 PM
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| quote | Originally posted by cebix:
However - the second I shut the engine off there was a loud "whale" sound from the radiator for about 3 seconds and in those 3 seconds the reservoir tank filled itself to the "FULL" mark. Does that sound like a clue to you guys? I guess that's not normal?
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Geez, how big is your reservoir tank? 
Even though I live only about a mile from the ocean, I have never heard a whale sound while in proximity to my Fiero(s). 
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cebix
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DEC 11, 02:20 PM
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You could call it an industrial metallic/hydraulic valve opening sound I guess but it was way out of the ordinary.
Anyway is the reservoir tank filling up from half full to full on engine shutdown in a matter of a few seconds normal? Does it suggest what the issue could be?[This message has been edited by cebix (edited 12-11-2019).]
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Patrick
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DEC 11, 02:37 PM
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| quote | Originally posted by cebix:
Anyway is the reservoir tank filling up from half full to full on engine shutdown in a matter of a few seconds normal?
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No.
| quote | Originally posted by cebix:
This was what clogged the hose, I have no idea what this stuff is on second thought... It's about 7mm in diameter.
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Maybe you've got eggs from an alien life form hatching in your coolant system.
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cebix
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DEC 11, 02:39 PM
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I really have no idea what the hell that is but it's rubber. So that sudden overfill doesn't indicate of anything concrete? Will see how it acts up on the next heat cycle
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