Tmccurry Posted January 18, 2018 Share Posted January 18, 2018 I'm trying to figure out what is circled in the picture. Am I missing a hose, or does it need to be plugged? It is located right below the throttle body on a 2005 LGT. Link to comment Share on other sites More sharing options...
relative4 Posted January 18, 2018 Share Posted January 18, 2018 It's actually ON the throttle body, and there is a second fitting which has presumably also been disconnected. A pair of hoses route coolant through the throttle body to warm it up, particularly in cold weather. Looks like somebody has bypassed that. People do it, no idea why. Having trouble with cold starts? I see a couple of these every winter. Link to comment Share on other sites More sharing options...
Tmccurry Posted January 18, 2018 Author Share Posted January 18, 2018 Correct. Meant to say right below the throttle body hose. I don’t believe I’m having cold start issues. I currently live in Alabama, so cold is a restive term (I don’t recall any issues when I lived in Colorado Springs) . I wonder what the point of by passing is? Link to comment Share on other sites More sharing options...
JmP6889928 Posted January 18, 2018 Share Posted January 18, 2018 Bypassing it keeps the air going through the throttle body cooler Link to comment Share on other sites More sharing options...
jager Posted January 18, 2018 Share Posted January 18, 2018 Yeah looks like the TB coolant lines have been bypassed. Should be a jump hose below there that connects to two block nipples that would have connected there. Link to comment Share on other sites More sharing options...
John J Posted January 18, 2018 Share Posted January 18, 2018 It's actually ON the throttle body, and there is a second fitting which has presumably also been disconnected. A pair of hoses route coolant through the throttle body to warm it up, particularly in cold weather. Looks like somebody has bypassed that. People do it, no idea why. Having trouble with cold starts? I see a couple of these every winter. How does this help with cold starts? Unless you have a block heater the coolant will be just as cold as the rest of the engine. Link to comment Share on other sites More sharing options...
JmP6889928 Posted January 19, 2018 Share Posted January 19, 2018 Unfrozen coolant still warmer than freezing atmospheric air Link to comment Share on other sites More sharing options...
ehsnils Posted January 19, 2018 Share Posted January 19, 2018 The primary goal is to avoid ice to build up in the throttle body, it won't make much difference with cold starts but the high velocity areas around the butterfly can cause condensation of humidity in the air and ice build up causing the throttle to malfunction. So if you have winters with high humidity and around the freezing point you really may want to have this connected. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.