Putting it all back together
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Joined: Jul 2000
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Engine: 5.7L V8
Transmission: 700R4
Putting it all back together
Ok, I'm finally getting things put back together after my blown head gasket. I've got a couple of questions though:
1) Where does the O2 sensor connect to? I labeled the connector, but now I can't find it. Doh.
2) What hoses connect to the throttle body? There are two for the TB heater, one from the pass. side valve cover, and the other ???
3) Where do the hoses go from the EGR solenoid? One goes to the throttle body, but the other one was disconnected and plugged by the previous owner. I'd like to get it back to the right place.
BTW, it's an 89 L98.
1) Where does the O2 sensor connect to? I labeled the connector, but now I can't find it. Doh.
2) What hoses connect to the throttle body? There are two for the TB heater, one from the pass. side valve cover, and the other ???
3) Where do the hoses go from the EGR solenoid? One goes to the throttle body, but the other one was disconnected and plugged by the previous owner. I'd like to get it back to the right place.
BTW, it's an 89 L98.
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Joined: Dec 2000
Posts: 3,813
Likes: 2
From: California
The o2 sensor connects to a pink wire that I believe shares a common harness with either the relays on the drivers side firewall, or the harness running along it. Just dig somewhere around your master cylinder, it should be there.
coolant:
One hose connects the throttle body to the intake manifold, it is shaped like a "u." Another hose goes from the passenger side of the throttle body to the heater valve. the heater valve has three coolant lines and one vacuum line connecting to it. You can bypass both of these with one hose with a 90 degree bend. I heard it was made to keep the tb from freezing, so you might not want to do that if you live in canada.
air: there is one hose on the passenger side top of the tb that connects to a metal line that connects to the top of the passenger side valve cover. This is bolted down to the stock intake manifold between the runners. The hose on the passenger side of the throttle body beneath this loops under and connects to the top of the charcoal canister.
The hard emissions lines come from the charcoal canister to the TB and then into a three way valve. I believe one of these goes into the egr valve, but I can't see it right now.
coolant:
One hose connects the throttle body to the intake manifold, it is shaped like a "u." Another hose goes from the passenger side of the throttle body to the heater valve. the heater valve has three coolant lines and one vacuum line connecting to it. You can bypass both of these with one hose with a 90 degree bend. I heard it was made to keep the tb from freezing, so you might not want to do that if you live in canada.
air: there is one hose on the passenger side top of the tb that connects to a metal line that connects to the top of the passenger side valve cover. This is bolted down to the stock intake manifold between the runners. The hose on the passenger side of the throttle body beneath this loops under and connects to the top of the charcoal canister.
The hard emissions lines come from the charcoal canister to the TB and then into a three way valve. I believe one of these goes into the egr valve, but I can't see it right now.
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