I've got a '92 F150 4x4 with a 5.0 EFI and a manual transmission. I had a hose start leaking coolant today. It's a inlet line to the throttle body from the heater core inlet hose. Long story short, I took the hose off to replace it and the elbow that sticks out of the throttle body collapsed. It was corroded all the way through. Then I checked the outlet hose on the throttle body...same problem. So, I bypassed the whole thing. My question is, how important is that coolant to the throttle body? It doesn't seem like it would make much of a difference. If it is important, what are my options? The only one I can see is to get another throttle body. Thanks. -Al

 

Selbona:
pretty sure that line just helps warm up the air comin in to the throttle body for cold weather warmup. I used to have a ford ranger, and it had the same thing. older vehicles like yours might even benefit from leaving it disconnected. if gas mileage or other problems arise, then you might want to look into gettin that replaced. I myself would just run it bypassed until i could afford to get it fixed. My $.02
another thing you could try is to tap and thread it, so it could accept some brass fittings( threaded to barbed ) from your local ace hardware. be carefull with that, as you could easily crack the throttle body too.

 

mine got bypassed when i put my P&P TB on, and it actually warms up quicker with out it....

 

thanks guys. now i feel a little better about bypassing it. i figured it didn't do much. thanks again. -Al