Thermostat Remove and Replace

[viper501]

Tried searching both the DIY and 996 forums with no luck. I think my thermostat has become stuck. Car is slow to get up to temp and not stable after arriving at temp. Can anyone provide me with a DIY for changing the T-stat out?

Thanks. Its for a 99 996 Carerra.

:thumbup:

[Loren]

I sent you a PM...

[viper501]

Got it done. Relatively simple operation but a MAJOR PIA to get the hoses off. I'd suggest that if anyone else plans this operation they get replacement hoses. Small cost and it may as well be done while you're at it. Temps are much more stable so I think that there was a developing problem there.

Thanks again to Loren for instructional assitance.

[SPR]

what were youre symptoms exaclty before for other's diagnosis?

[viper501]

Car was slow to heat up to operating temp, slow to react to increased temps and slow to cool back down. Temps are now much more stable and consistent.

I couldn't see any obvious signs of damage/defect on the old tstat but its clear that the change has improved things.

Still recommend replacing the hoses while you're down there. I'd have saved a lot of time and aggravation if I'd been able to just cut off the hoses. Its tight down there and tough to get a grip on the larger/upper hose. Ultimately, I had to remove the thermostat housing to get the upper hose off.

I'd also recommend getting a hose clamp to keep from losing as much coolant as I did during the process.

[zoomsan]

Car was slow to heat up to operating temp, slow to react to increased temps and slow to cool back down. Temps are now much more stable and consistent.

I couldn't see any obvious signs of damage/defect on the old tstat but its clear that the change has improved things.

Still recommend replacing the hoses while you're down there. I'd have saved a lot of time and aggravation if I'd been able to just cut off the hoses. Its tight down there and tough to get a grip on the larger/upper hose. Ultimately, I had to remove the thermostat housing to get the upper hose off.

I'd also recommend getting a hose clamp to keep from losing as much coolant as I did during the process.

Hi,

Since your original post, I was hoping someone would have put up their procedures for the Thermostat replacement. Unless I'm missing it, I don't see it. I've searched the forums and can pretty much piece together things, but would you happen to have the actual procedures from Loren? Just want to make sure I'm identifying the correct location, hoses, etc. Thanks!