Cliffjumper126

As the title says, I believe my thermostat may be stuck open. My 8 takes forever to warm up. For instance, it was ~26F this morning when I fired her up. I drove at a steady 60-65mph for like 20 min straight and the temp never got above 1/4. Then I stomped on it to overtake a slow-poke and the temp went up to the normal 1/2 mark. Then it dropped again to 1/4 after I cruised for another 5-10 min and stayed there until I arrived. This only happens when it's really cold out and only bothers me because I don't want to drive it hard or redline it when it's not warmed up. When it's warmer out it sometimes fluctuates a little but never this much.

Thx

j9fd3s

N3H1-15-171 is the part number. its rather expensive, $41.90 list. kind of a PITA to change too, the alternator bracket needs to come off

Cliffjumper126

So I'm correct in thinking it's the thermostat then? Well I would probably put in a RE-medy tstat from mazmart. They supposedly make it run cooler.

Harlan

iTrader: (3)

Sounds like the thermostat. Fix it quick because the warmup fuel trims can poison the cat, at least that's been my experience with other cars. Changing it is a pain, look at this DIY. Remember band-aids and beer.
https://www.rx8club.com/do-yourself-...cement-231160/

j9fd3s

it does sound like a thermostat, not much else it could be

Cliffjumper126

Alright thanks everybody, I figured it was. Will be putting in a new one soon