‘92 LT1 Coolant bleeding question
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Intermediate
Joined: May 2015
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From: Philadelphia PA
‘92 LT1 Coolant bleeding question
I blew a hole in the top rear radiator hose today. Since I am going to be replacing the hose, I will have to add coolant to the system. I did not loose a lot of coolant, and I
had a recent flush. My question is, when filling the system, which bleed screw do I open? I see there is one on top of the thermostat housing and there seems to be one under the throttle body. I am also confused because there is a port on the bottom of the throttle body by this bleed screw that is capped off, I included a picture to illustrate. Any help is appreciated.
Last edited by larry_c4; Aug 13, 2018 at 09:57 PM.
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The cap is a sign that someone has done the throttle body bypass. That means there is no coolant in that unit. You therefore only have to use the bleed valve at the T-sat housing.
Thread Starter
Intermediate
Joined: May 2015
Posts: 45
Likes: 1
From: Philadelphia PA
Ok so I will not have to use the bleeder screw on the throttle body. Interesting that someone must have disconnected the throttle body line. I never noticed freezing in the TB in the winter. Makes sense that it was disconnected though to allow for colder air in the TB.
