What is this hose?

2003 PONTIAC MONTANA
240,000 MILES • 3.4L • V6 • 2WD • AUTOMATIC
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DOWENS1066
  • MEMBER
  • 3 POSTS
This hose has a pin hole leak.
Jul 7, 2023 at 10:18 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,240 POSTS
Hi,

I need to know which hose. Is it leaking anything? What does it connect to?

If possible, could you take a couple of pictures and upload them for me to see?

Let me know.

Joe
Jul 7, 2023 at 1:58 PM
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DOWENS1066
  • MEMBER
  • 3 POSTS
Let's see if this picture will come through this time.
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Jul 8, 2023 at 2:28 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,240 POSTS
Hi,

The coolant hose, both a rubber hose and steel tube, is the thermal bypass hose/pipe. See pic below. Is it leaking or what is happening?

Let me know.

Joe

See pic below.
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Jul 8, 2023 at 2:10 PM
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DOWENS1066
  • MEMBER
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Thanks! It was leaking through a pinhole sized crack. When I took it off, it was super spongy, and turned out to have large cracks in the inside radius of each corner. It was probably the original one. I got one from NAPA and cut it down just a little bit to make it fit perfectly.
Thanks again for your help!
Jul 10, 2023 at 1:11 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,240 POSTS
Hi,

Thank you for the update, and you are very welcome. I'm glad to know you got it taken care of.

Feel free to come back anytime in the future.

Joe
Jul 10, 2023 at 2:37 PM
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