Overheating but not really? Air in system or other problem? Need help diagnosing (Page 6/14)
cebix NOV 11, 02:29 PM
Yes, one normal Stant, one Stant SuperStat 45819 and now I bought a Gates 33529S since it was supposed to arrive here the quickest. All bought from rockauto.

So if it's stuck all the time is it possible the engine would run normally on the highway for hours?

[This message has been edited by cebix (edited 11-11-2019).]

Gall757 NOV 11, 03:03 PM

quote
Originally posted by cebix:

So if it's stuck all the time is it possible the engine would run normally on the highway for hours?




It's possible, depending on ambient air temp. Fiero coolant capacity is waaay beyond what is needed for a 2.5 liter engine.
cebix NOV 11, 03:11 PM
All right... buying a new thermostat then. Will return to this thread in a week or two when it arrives hopefully and see if it helps. I think I'm gonna try ACDELCO 12T50E for a change.

This time I'm going to test it in boiling water before putting it in the car.

EDIT: Just to be sure - what I described when I was running without a thermostat sounds normal?

[This message has been edited by cebix (edited 11-11-2019).]

Patrick NOV 11, 03:31 PM

quote
Originally posted by cebix:

I think I'm gonna try ACDELCO 12T50E for a change.



The superior one recommended here for years is the Stant SuperStat 45819 (195º).
olejoedad NOV 11, 03:35 PM
I think it should have gained temperature faster than you experienced without the stat.
You may still have a flow volume issue, but lets worry about that after you get a properly working thermostat.

Do yourself a favor and lose the Rock Auto contact information.
Other's experience may vary, but I have never had good results with what they sell.

Does anyone following this thread have a known good t-stand they can send this fellow?
cebix NOV 11, 03:59 PM
Yeah it's a hit and miss with Rockauto for me, other then those pesky thermostats the only big issue I've ever had with them was a wrong flexplate and they issued a refund without wanting it back, so that was okay I guess. No shipping cost and tax return though. But they're pretty much the only store I've found that ships internationally and I've been buying from them since 2011. Autozone, O'Reilly, Autopartswarehouse, don't offer international shipping. If you guys use any other stores, please state their names, I'll see if they offer shipping outside USA. EDIT: Fierostore and Summitracing ship too internationally but their quotes are twice or sometimes more than what rockauto proposes.

Just a thermostat is $7.99-$17.99 shipping cost according to Rockauto to Poland. If anyone has a good known thermostat I'd be willing to purchase that.

Patrick, I already have one that is also stuck closed so not sure of trusting them again.

EDIT: Just checked my coolant as the car cooled down. It's full at the thermostat cap - just at where I filled it today when removing the thermostat.

EDIT2: Ordered a SuperStat 45819 again, let's see what it does. Yeah, again from Rockauto. Should be here by Friday...

[This message has been edited by cebix (edited 11-11-2019).]

Patrick NOV 11, 04:44 PM

quote
Originally posted by cebix:

Patrick, I already have one that is also stuck closed so not sure of trusting them again.



The exact same part number as the one I mentioned?

I'm asking because Stant sells two different 195° thermostats for this application. You don't want the cheaper one, you want the SuperStat.


quote
Originally posted by Patrick:

The superior one recommended here for years is the Stant SuperStat 45819 (195º).
cebix NOV 11, 05:04 PM
Yes, the exact part number. The cheaper one is 13819. I bought 45819 from the premium category.

https://www.rockauto.com/en...9039&jsn=307&jsn=307

I rechecked my old order and it is the same number. So I just thought what the hell, I'll buy it again and see how it goes even though I obviously wasn't satisfied with that previous one.

[This message has been edited by cebix (edited 11-11-2019).]

Patrick NOV 11, 05:17 PM

quote
Originally posted by cebix:

I rechecked my old order and it is the same number. So I just thought what the hell, I'll buy it again and see how it goes even though I obviously wasn't satisfied with that previous one.



Well, I suppose there can always be a dud. That's unfortunate.

It's too bad that Rodney Dickman is apparently no longer still selling these particular thermostats. After being made aware of what you've gone through, he probably would've dropped a new one into a pot of boiling water to double-check it before shipping it to you.

[This message has been edited by Patrick (edited 11-12-2019).]

cebix NOV 11, 05:33 PM
Yeah, I've bought some parts from Rodney over the years, mainly suspension stuff. All my ball joints and tie rods and tie rod ends from him are good still.