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  #1  
Old 03-22-2011, 09:39 PM
zdsnyder zdsnyder is offline
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Question coolant hoses collapsing . . .

I recently replaced my upper and lower coolant lines because I noticed the old ones were collapsing. After driving to work today, I noticed that the new ones were now collapsing, as well as my temp gauge was showing below the cool line the entire trip. I'm pretty unfamiliar with engine mechanics and couldn't find any help in my Haynes guide.
Any ideas what I should do next to trouble shoot? Are these problems related or is this possibly a thermostat issue??? It's a '95 4.0L efi V-6
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  #2  
Old 03-23-2011, 05:27 AM
DaveyMac DaveyMac is offline
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Default Re: coolant hoses collapsing . . .

Radiator cap is bad or the dip hose is clogged pretty darn good or busted between the overflow tank and cap.
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Old 03-23-2011, 08:36 AM
FireRanger FireRanger is offline
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Default Re: coolant hoses collapsing . . .

The cooling system is sealed and pressurized. As coolant heats up, it expands and pressure increases. Operating temperature will take it up to about 10 PSI. If the pressure exceeds 12 PSI for whatever normal or abnormal reason, the radiator cap is also a relief valve. It will open and allow coolant to flow out into that reservoir tank.

As the system cools and pressure is reduced, the radiator cap works backwards and allows coolant to be sucked back in from the reservoir tank. IF the cap is fucked up, it will not allow that to happen. The resulting drop in pressure inside the cooling system will cause non-rigid components to get sucked in like that. Think a drinking straw with a piece of ice stuck in the bottom, the straw collapses.

So, most likely your radiator cap is busted. It's a cheap part, just buy a new one and I bet the problem goes away. Also, make sure on a cold engine that your radiator is filled and the tank is 1/2 filled.
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Old 03-25-2011, 07:27 PM
zdsnyder zdsnyder is offline
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Default Re: coolant hoses collapsing . . .

Excellent thank you for the advice guys!
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  #5  
Old 03-25-2011, 07:40 PM
ben10 ben10 is offline
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Default Re: coolant hoses collapsing . . .

ya learn something new everyday!
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Old 03-27-2011, 04:39 PM
FireRanger FireRanger is offline
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Default Re: coolant hoses collapsing . . .

Yes I'm a wealth of entertaining facts. Or well spoken bullshit. Depending on what people want to hear
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Old 03-27-2011, 04:51 PM
ben10 ben10 is offline
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Default Re: coolant hoses collapsing . . .

bullshit! thats my favorite
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Old 03-27-2011, 05:52 PM
edgeman4.0 edgeman4.0 is offline
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Default Re: coolant hoses collapsing . . .

Quote:
Originally Posted by FireRanger View Post
Yes I'm a wealth of entertaining facts. Or well spoken bullshit. Depending on what people want to hear
lol i giggled at this.
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