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Old 07-25-2023, 03:13 PM
workingonit's Avatar
Join Date: May 2021
Location: DFW Texas
Posts: 647
workingonit is on a distinguished road
planning ahead for my next thermostat?

Here's a thread that mentions thermostats that open at lower temps https://xoutpost.com/bmw-sav-forums/...ml#post1221848

I mentioned my past experiences with stock T-stats used for economy (on eco 4 cylinder cars), and als where the stock T-stat has worked alright, on my so-far stock 2500HD pickup (big fan, radiator, and oil cooler have worked fine for 18 years); in all other applications over many years, I've replaced (or removed entirely, on a race car) the stock thermostat, in favor of a T-stat that openes at a lower temperature, usually at 160F (all on domestic-USA cars or trucks).

Since my X5 seems to run fine at all temperatures using the stock 190F thermostat (my coolant stays at 194F +/- a couple of degrees, probably due to the 3000 cfm aftermarket electric fan I installed), I haven't seen fit to get a high-flow (Stewart) waterpump, or a racing/competition lower temperature-opening thermostat yet. If it ain't broke....

Here's a single-post link to where I posted other links to two low-temp thermostats https://xoutpost.com/1221848-post10.html
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Old 07-25-2023, 04:21 PM
Join Date: Jan 2019
Location: Texas, USA
Posts: 90
Bottomfeeder is on a distinguished road
Originally Posted by andrewwynn View Post
My experience was that when fan failed the star test I could not engage the AC that start cycle.

That being said, I also was able some times to force the ac compressor on with the foxwell and it worked until I turned the car off that lasted a week or so until I would have to manually kick the AC on with foxwell every minute or so. it was brutal hot out and the new fan took a while in shipping.

Sent from my iPhone using Tapatalk Pro

This was also my experience when the aux fan on my 02 went - no AC.

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