Ok, I fixed the heater hose quick connect on my tbi. I thought this would solve my overheating problem. I noticed at a stop my engine was getting warmer and then when I would drive it would cool down.. Never got really hot like when I had the bad quick connect but I've been watching engine since I just did recent work on cooling system...when I changed the connector and flushed the system and when I replaced coolant I left cap of radiator and purged air squeezing hoses and working it out till system was at operating temp... Could I have another issue like thermostat or water pump? Should I just replace both...I did radiator about a year ago...not sure what else it could be. Fan runs fine and turns off and on as needed.
Radiator cap cold after driving
- Thread starter mikesid
- Start date
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SunlitComet
OBS Jedi-Do Good
it sounds like the thermostat is not opening letting the coolant get into the radiator to cool down. yet the fan is running the whole time and that will help keep the radiator assembly cooled down as well.
Ok, after investigating further I saw a small amount of coolant around thermostat housing. So changed thermostat, with 195deg stat. Took truck for drive, engine runs cooler now with no fluctuations. Radiator cap is still cold when done driving, is that normal? Hose from stat to radiator is hot, radiator is hot, but cap is cool...I just don't recall cap being that cool, is it me or is cap supposed to get hot?
SunlitComet
OBS Jedi-Do Good
they do get hot. maybe the cap is well insulated and maybe the pressure in the system is not high enough that it bypassing to the reservoir which will make it hot then.
ccapehartusarmyINF.(ret)
Full Access Member
wich engine do you have the correct thermostat for most of these motors is a 187 dagree you
when your done driving again and you feel the cap is cold losen it a little see if you get a hiss
when your done driving again and you feel the cap is cold losen it a little see if you get a hiss
ccapehartusarmyINF.(ret)
Full Access Member
be carefule when messing with thermostat temps alotta people on the forum with the exception of sunlitcomett and a few others dont really understand why the engines operating temp is were it is ive even read on other forums guys putting in like 160 dagree tstats wich is very bad unless they do most of there driving on mercury or venus
SunlitComet
OBS Jedi-Do Good
he has 1995 350 tbi and the correct thermostat rating is 195° unless it needs modification for a boost application.
