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What's Up With the '84 Lesabre Heater Hose?


Roger Frazee
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My 1984 Lesabre 5.0 has a big loop in the heater hose that runs from the water pump to the heater.  At first I thought it was because the previous owner lacked a knife to cut it to size, but I have since noticed that all the Lesabres are like that.  

 

What is the purpose of the loop?  It looks like a mistake.

Lesabre Heater Hose.jpg

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Look under the aircleaner and see if the hose is lying in a clip on the carburetor choke housing. I had an 81 Pontiac Safari with 307 that routed the hose like that.

 

It's designed to heat up the choke coil so the engine comes off choke quicker.

 

Olds is known to put a loop in the hose from the hot water valve at back of the engine to the heater core inlet. Known as a "vibration loop" and designed to reduce stress on the valve and core nipples.

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6 hours ago, rocketraider said:

Look under the aircleaner and see if the hose is lying in a clip on the carburetor choke housing. I had an 81 Pontiac Safari with 307 that routed the hose like that.

 

I'll check for the presence of a clip, but the loop on my car is just lying there and is not secured to anything.  

 

 

 

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