Hi,
Our beloved 84 B150 has the dreaded annoying coolant smell coming through the dash. Seems to occur after a few minutes after getting warm. I believe this occurs regardless of temp setting on ac control panel. As well, a few days ago, when driving on the fwy during a very hot day, the temp gauge rose into the overheating territory. So I turned the heater on full blast to try and get that temp top come down. Oddly the temperature of the air didn't feel as hot as I thought (maybe because it was already 100 degrees in the van!) but it sort of reduced the coolant temp a slight bit.
I am wondering if this is a heater core issue. Or perhaps the plenum is not closing all the way and is sucking engine bay air in "and" I have some sort of misting coolant issue. Or perhaps a bad thermostat causing pressure build up. I can not find any noticeable leaks. I used some dye to see if I could spot an obvious coolant escape area. The reservoir has fluid in it and perhaps is going down a little but not at a huge rate. Maybe the radiator cap is not sealing well?
I did notice some coolant in the front of the radiator near the bottom outlet.
This AM I bypassed the Heater core. Will see if that eliminates the smell for now.
Our beloved 84 B150 has the dreaded annoying coolant smell coming through the dash. Seems to occur after a few minutes after getting warm. I believe this occurs regardless of temp setting on ac control panel. As well, a few days ago, when driving on the fwy during a very hot day, the temp gauge rose into the overheating territory. So I turned the heater on full blast to try and get that temp top come down. Oddly the temperature of the air didn't feel as hot as I thought (maybe because it was already 100 degrees in the van!) but it sort of reduced the coolant temp a slight bit.
I am wondering if this is a heater core issue. Or perhaps the plenum is not closing all the way and is sucking engine bay air in "and" I have some sort of misting coolant issue. Or perhaps a bad thermostat causing pressure build up. I can not find any noticeable leaks. I used some dye to see if I could spot an obvious coolant escape area. The reservoir has fluid in it and perhaps is going down a little but not at a huge rate. Maybe the radiator cap is not sealing well?
I did notice some coolant in the front of the radiator near the bottom outlet.
This AM I bypassed the Heater core. Will see if that eliminates the smell for now.
