Need help...again.
Okay...so yesterday my 1990 Jeep crept up over the 210 threshold and was midway between center and overheating. I went and got a new fan clutch and thought I solved my problems as it wasn't leaking this morning on my commute to work (temperature was around 65 degrees outside). When I came back from work, the temperature was never over 210 degrees the entire commute (it's 85 degrees outside and I was in stop and go traffic).
I parked the car at home and looked underneath to see coolant raining from my engine bay. I opened the hood and saw coolant streaming from my Mac's expansion tank port by the cap. What I've done prior to this problem: New head gasket. Had cylinder head machined. New water pump. New radiator. New expansion tank. New thermostat (fail safe 195). New thermostat housing. Backflushed heater core to ensure no obstructions. Ensured springs in radiator hoses. Filled cooling system by pulling off hose from water pump going to heater core and waited until it came out the water pump port. How much pressure is in the system? Mac's expansion cap doesn't seem too snug, I would think there would be a little more tension while tightening....is this normal? This is only happening on hot days in traffic for two days in a row but temp was under 210 (Sensor was working yesterday as it went up to about 230 degrees). Why does this happen on only hot days? Any ideas? |
Don't see a new radiator cap on your list.....
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The Mac's expansion tank comes with a new cap.
I'm thinking about putting on the old one to see if it's a poor fit between expansion tank and the cap they provide. |
Originally Posted by u0087966
(Post 2856712)
The Mac's expansion tank comes with a new cap.
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btw cruiser54....I went to your link on the renix info....good stuff:thumbup1:
I already added new grounds. |
Originally Posted by u0087966
(Post 2856718)
btw cruiser54....I went to your link on the renix info....good info:thumbup1:
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16 psi radiator cap but I think it's leaking between the cap and tank, very loose connection between the two.
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Originally Posted by u0087966
(Post 2856766)
16 psi radiator cap but I think it's leaking between the cap and tank, very loose connection between the two.
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I put the big ugly green Volva cap on mine that Cruiser recommends and it helped my temp and it doesn't leak.
Cruiser how in the world did you ever think of using a Volvo on a Jeep? |
Originally Posted by cruiser54
(Post 2856774)
Imagine that........
Yeah...silly me for assuming that a brand new expansion tank with a brand new cap would fit together correctly. :001_tongue: |
Originally Posted by Jeepcrazy5722
(Post 2856787)
I put the big ugly green Volva cap on mine that Cruiser recommends and it helped my temp and it doesn't leak.
Cruiser how in the world did you ever think of using a Volvo on a Jeep? |
Originally Posted by u0087966
(Post 2856806)
Yeah...silly me for assuming that a brand new expansion tank with a brand new cap would fit together correctly. :001_tongue:
That was a silly assumption..... |
The Volvo cap is a life saver, I fought that damn cap for years, always leaking. I would buy a new one, and it would leak, I would buy one from the junk yard, it would leak, the only one that hasn't leaked is the Volvo cap.
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Originally Posted by Jeepcrazy5722
(Post 2856819)
The Volvo cap is a life saver, I fought that damn cap for years, always leaking. I would buy a new one, and it would leak, I would buy one from the junk yard, it would leak, the only one that hasn't leaked is the Volvo cap.
Not made by WunHungLo and his comrades...... |
Mine is doing the same thing what it's the Volvo cap I need to try
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Originally Posted by 94XJSD
(Post 2856897)
Mine is doing the same thing what it's the Volvo cap I need to try
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Originally Posted by cruiser54
(Post 2856902)
703-1396 cap at Napa. |
What is the significance of going from a 16lb cap to a 22lb cap?
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It's not the pound rating as much as it is the fit of the cap.
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Originally Posted by 94XJSD
(Post 2856897)
Mine is doing the same thing what it's the Volvo cap I need to try
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Looks good might have to try it thanks
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