arse_sidewards
Contrary to everything
- Joined
- May 19, 2020
- Member Number
- 71
- Messages
- 7,851
Vehicle in question is the Aerostar. The cooling system is literally identical to a 3.0 Ranger, standard V engine with coolant ports in the manifold at the front of the heads and a thermostat mounted in the manifold and temp sensor/heater core outlet below and forward of the thermostat.
Over the past couple months it was having a temp spike on warm up from cold. This would only happen after sitting several hours. Basically before work and after work.
Last week the temp spike was getting out of the "normal" range on the gauge so I figured the thermostat was opening too slowly so I swapped it out.
New thermostat does the exact same thing.
Ok, whatever, maybe there's an air bubble (I am pretty sure my intake gasket is seeping coolant into the intake on cool-down) somehow that isn't getting sucked out the heater core circuit I'll drill a tiny hole in the thermostat and see if that fixes it.
One 1/4" hole later and it won't warm up. This makes no sense since the same thermostat made it run the correct temperature after the temp spike ran its course.
Ok, maybe the new thermostat is broken because of the temp spike.
I go get a used thermostat from the parts inventory, confirm it working as it should in boiling water, drill a 3/16 hole in it, same behavior.
WTF? Should I throw another new thermostat at it? It's not like they're expensive.
Over the past couple months it was having a temp spike on warm up from cold. This would only happen after sitting several hours. Basically before work and after work.
Last week the temp spike was getting out of the "normal" range on the gauge so I figured the thermostat was opening too slowly so I swapped it out.
New thermostat does the exact same thing.
Ok, whatever, maybe there's an air bubble (I am pretty sure my intake gasket is seeping coolant into the intake on cool-down) somehow that isn't getting sucked out the heater core circuit I'll drill a tiny hole in the thermostat and see if that fixes it.
One 1/4" hole later and it won't warm up. This makes no sense since the same thermostat made it run the correct temperature after the temp spike ran its course.
Ok, maybe the new thermostat is broken because of the temp spike.
I go get a used thermostat from the parts inventory, confirm it working as it should in boiling water, drill a 3/16 hole in it, same behavior.
WTF? Should I throw another new thermostat at it? It's not like they're expensive.