New Bypass hose installation tips?

[Keepin'her_going]

Happy new years everyone. I've been really working on the 91 LE, and it's getting close to being fully maintained. When tinkering on the car, I noticed a coolant hose with a darkened end going on to the intake manifold. I haven't tore into it yet, but from what I've found I think the other end of the hose goes to the water pump.

Now just to play it safe, has anyone here replaced this hose on their own car; and what tips and tricks could you give me.

Thanks, Tom.

[RJolly87]

I don't know how much difference there is, but on my L27, it does go from the top of the water pump to the LIM, and has a inlet nipple on the LIM. On the L27, this inlet at the LIM is plastic, and will break at some point, however they make metal replacements.

I think coolant goes through this only before the thermostat opens, but if you are in the neighborhood, it couldn't hurt. In my case, it is wide open to get to after I take the alternator off. I would say go for it next time you are doing work in the area, but don't bother with a special trip just for that. If it does happen to blow or break, it is an easy enough fix, but the risk of that even happening is relatively low. My case, the plastic nipple broke in half, and I suspected there was a coolant leak, but i couldn't pin it down because I was always checking at operating temp. I didn't find it until I short tripped the car and found a puddle when I parked.

Given you have an LN3, your notes may be a little different, but hopefully my notes are of some benefit.

[Keepin'her_going]

Thanks for the advice! I'm going to be putting on a new serpentine belt, so I guess I'll tackle it then.