Jeep Thermostat - Diagnose and Replace - Jeep WK2 -(P0128 error code)

Check engine light and P0128 error code, the thermostat is not opening/closing properly
Thermostat: amzn.to/3HzhuOr
Mopar 50/50 Fluid: amzn.to/43KrDkR
Fancy Funnel: amzn.to/3HA0WpI
My Funnel: amzn.to/3jCuNWn
Fastener Removal tool: amzn.to/3vD7qzV
Code Reader 1: amzn.to/3Xl8C5b
Code Reader 2: amzn.to/40wikUL
Code Reader 3: amzn.to/3jrzzpT
Code Reader 4: amzn.to/3HVZsrc
Hood support Struts: amzn.to/3NQtDT0
Torx Bit Set: amzn.to/3ho3lqQ
Mechanic's Screwdriver Set: amzn.to/3JXk2ph
Multimeter: amzn.to/3wUf48e
Socket set: amzn.to/40vYvwX
Socket drive extension: amzn.to/40tg6FR
Steps:
- [ ] Check engine light film, p128 engine code, when weather cold
- [ ] Revised part
- [ ] Code scanner film and clear, it battery off 10 mins
- [ ] Trash bay on engine to funnel to clean container
- [ ] Deep under car and cardboard
- [ ] GoPro
- [ ] Check hose temps and pressure
- [ ] Cover off
- [ ] Grease stubs
- [ ] Breather tube off
- [ ] Wire harness off
- [ ] Air temp sensor
- [ ] 8mm loosen clamp
- [ ] Breather hose off
- [ ] Remove air box and intake
- [ ] Square pan and towel
- [ ] Remove hose clamp and lift hose up or dump fluid
- [ ] Loosen cap slowly
- [ ] 10mm nuts on thermostat, 9 ft lbs
- [ ] Seal glide or die lyric grease on seal
- [ ] Install thermostat to hose now
- [ ] Anti sense on threads
- [ ] Clean out inside hose
- [ ] Remove bleeder with large flat head
- [ ] Add grease to it
- [ ] Add bleeder loosely after coolant comes out
- [ ] Fill mix coolant to radiator cap, with funnel and let us sit and keep bleeding it
- [ ] When bubbles stop, tighten bleeder cap
- [ ] Clean area and compressed air off hoses
- [ ] Air intake back on
- [ ] Get engine hot and check coolant levels, heater to max heat, keep eye on funnel
- [ ] Check lower and upper hose are same temperature
- [ ] Squeeze upper hose and look for air bubbles in filler area
P0128 P 0128 P128 P 128
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