Coolant leak from throttle body plug
01-18-2014, 11:40 AM
#11
Drive like you stole it
01-18-2014, 08:41 PM
#13
I wonder if it has something to do with 4x4, and/or off road package.
As someone in another thread mentioned it was to keep the intake from freezing up.
While driving in ice/snow/freezing rain conditions the throttle body can bring in moisture and freeze the flaps and the air intake cannot be controlled.
makes sense, as my 5.0 4x4 offroad has this, and my 4.9 2wd does not.
As someone in another thread mentioned it was to keep the intake from freezing up.
While driving in ice/snow/freezing rain conditions the throttle body can bring in moisture and freeze the flaps and the air intake cannot be controlled.
makes sense, as my 5.0 4x4 offroad has this, and my 4.9 2wd does not.
01-20-2014, 02:06 AM
#14
Senior Member
FWIW - Routing coolant through the TB is designed to keep it from Icing up! The TB is the narrowest point in the air intake system (venturi) and at highway speeds the air flow will cause a further drop in temperature [Bernoulli's principle]. If the Humidity is high and the temp is just right you can develop icing in the TB - That is why Small Aircraft have Carb Heat and Why your old Carbureted Air Cleaners had a pipe that drew air across the exhaust manifold when they were cold - to pre-heat the incoming air.
I have bypassed the coolant going through the TB on my 96 Impala SS, Our 2000 Honda Odyssey, and My 1991 5.8 F150. All these while living in Texas and Arkansas. I have had ZERO Problems driving in all Weather - However if I lived in Cleveland, OH or Coeur d'Alene, Idaho. I might consider leaving them connected. In Houston - I would have unhooked them yesterday! Reason behind dis-connecting is to maintain a slightly cooler intake charge which in theory is worth a tiny amount of TQ and HP, possibly at a tiny expense to Mileage. (my 2000 Honda even had a small coolant radiator inside the Air Box - got rid of that quick!)
I have bypassed the coolant going through the TB on my 96 Impala SS, Our 2000 Honda Odyssey, and My 1991 5.8 F150. All these while living in Texas and Arkansas. I have had ZERO Problems driving in all Weather - However if I lived in Cleveland, OH or Coeur d'Alene, Idaho. I might consider leaving them connected. In Houston - I would have unhooked them yesterday! Reason behind dis-connecting is to maintain a slightly cooler intake charge which in theory is worth a tiny amount of TQ and HP, possibly at a tiny expense to Mileage. (my 2000 Honda even had a small coolant radiator inside the Air Box - got rid of that quick!)
01-20-2014, 02:12 AM
#15
Drive like you stole it
FWIW - Routing coolant through the TB is designed to keep it from Icing up! The TB is the narrowest point in the air intake system (venturi) and at highway speeds the air flow will cause a further drop in temperature [Bernoulli's principle]. If the Humidity is high and the temp is just right you can develop icing in the TB - That is why Small Aircraft have Carb Heat and Why your old Carbureted Air Cleaners had a pipe that drew air across the exhaust manifold when they were cold - to pre-heat the incoming air.
I have bypassed the coolant going through the TB on my 96 Impala SS, Our 2000 Honda Odyssey, and My 1991 5.8 F150. All these while living in Texas and Arkansas. I have had ZERO Problems driving in all Weather - However if I lived in Cleveland, OH or Coeur d'Alene, Idaho. I might consider leaving them connected. In Houston - I would have unhooked them yesterday! Reason behind dis-connecting is to maintain a slightly cooler intake charge which in theory is worth a tiny amount of TQ and HP, possibly at a tiny expense to Mileage. (my 2000 Honda even had a small coolant radiator inside the Air Box - got rid of that quick!)
I have bypassed the coolant going through the TB on my 96 Impala SS, Our 2000 Honda Odyssey, and My 1991 5.8 F150. All these while living in Texas and Arkansas. I have had ZERO Problems driving in all Weather - However if I lived in Cleveland, OH or Coeur d'Alene, Idaho. I might consider leaving them connected. In Houston - I would have unhooked them yesterday! Reason behind dis-connecting is to maintain a slightly cooler intake charge which in theory is worth a tiny amount of TQ and HP, possibly at a tiny expense to Mileage. (my 2000 Honda even had a small coolant radiator inside the Air Box - got rid of that quick!)
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green93 (05-02-2019)
01-21-2014, 01:09 AM
#16
I live in NE Okla. so in the winter I may have some issues.
I'm going to figure out a fix in the spring when I have some time.
I cannot get the plugs out unless I drill them, then I'll figure out something to put back in it, maybe I can find some plugs to fit.
I'm going to figure out a fix in the spring when I have some time.
I cannot get the plugs out unless I drill them, then I'll figure out something to put back in it, maybe I can find some plugs to fit.
06-17-2021, 08:50 AM
#17
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1996 f-150 5l :I have coolant leak from a plug on the throttle body. There are two plugs on the throttle body (point toward passenger side at about 45 degrees). The lower one has a pin point leak when the coolant pressurizes. Ford only sells the whole throttle body... $500! Is there a way to replace this plug...I tried prying it out but it is really in there. I put epoxy putty in there as a temp fix, but not sure it will hold with the heat?
Any ideas? Should I try and replace plug, go new throttle body, or just leave it as is...epoxy included?
Thanks in advance for your input!
G
Any ideas? Should I try and replace plug, go new throttle body, or just leave it as is...epoxy included?
Thanks in advance for your input!
G
06-17-2021, 10:47 AM
#18
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Leaky Throttle Body Freeze Plugs
Do you mean that a freeze plug is leaking? If so that isn't a big deal. I had two that had pin sized holes in them last year. I took it to the shop and they installed two new plugs for very little money. You might want to change your radiator coolant and flush it a few times. Over time the coolant can go bad and corrode the plugs from the inside out. The coolant in my truck at the time hadn't been changed in over fifteen years.
