So, driving home today from work I started to smell some burning coolant/oil. I paid no mind right away, because the car in front of me was an old Vette and was smoking a bit, so I thought it was him. After a few miles of passing him, I keep smelling it and LUCKILY for my scangauge, I noted the coolant temps going above 205 (206, 208, 214...up to 225). I pulled over, popped the hood and noticed coolant spray over the center/front of the motor.
I was a bit pissed, because I was still about 15 miles from my house, so I turned the heat on blast and babied it home. Only one time did it get up to 230, by which the factory needle THEN moved ever so slightly. Factory tolerances for gauges SUCK!
I was able to get it home and did a quick youtube search for 4.0 L Thermostat DIY and say it was pretty easy. Got the housing out, so am going to replace them all tomorrow (housing, thermostat, both sender/sensor units for coolant, coolant (obviously) AND...the pcv valve, since this is the perfect time to do it. No need to worry about coolant loss :).
So, tomorrow I'll get to work on it after work, so shouldn't take long if all just falls into place.....
. Going to give the oil a good Seafoam flush and change with some Mobil 1 Extended Syn 5W-30. I've been using synthetic since I bought it last November, so I'm sure the thermal breakdown properties helped as the motor heated up a bit.
If you think of anything else I should check/change at this time, let me know. I was going to do the radiator, fan clutch and water pump too, but gotta hold off until next pay check. Go figure that it happens the day after I buy a new Trek mountain bike!
Parts list picked up from Advance Auto:
2L5Z-8592-BB - Thermostat housing from Ford, $57.69
1L2Z-8255-AA - Thermostat housing base gasket from Ford, $6.14
3L8Z-12A648-A - Coolant sensor/sender from Ford (need 2, both are identical part numbers), $36.35 each
13649 - Thermostat (190), $17.99
PCV483 - PCV Valve, $6.99
10233 - Radiator Cap, $7.49
35617 - Thermostat Gasket, $1.99