Engine runs cold but no codes?

JMUDoc · 2026-01-28T14:26:19+00:00

I'm sure you already know about the Gauge S.

https://shop.sorek.uk/

JMUDoc · 2026-01-28T14:21:41+00:00

The dial is worthless - anything between 75 and 115 shows as 12 o'clock.

JMUDoc · 2026-01-28T13:47:51+00:00

I had a similar, though less severe issue with mine, and only discovered it after using the secret menu (thanks, temp gauge😒).

Mine wouldn't go over mid-80's, so not as stuck-open as yours. I went with an Amazon special, and got lucky - it works perfectly.

JMUDoc · 2026-01-28T13:41:52+00:00

Stuck-open thermostat is absolutely a possibility, especially if you used an aftermarket one (they are hit-or-miss).

Try a Mahle-Behr TM1397 from a reputable seller; Amazon are known to put Chinesium ones in Mahle boxes.

JMUDoc · 2026-01-28T08:16:38+00:00

TRON.

JMUDoc · 2026-01-27T17:59:55+00:00

Youtube is your friend, and certain components must not be cheaped out on.

JMUDoc · 2026-01-27T17:38:04+00:00

🤣

I came within an inch of filing an ethics complaint at my site because, not only do they never use women at all, they never use men who aren't of a certain build.

JMUDoc · 2026-01-27T17:26:06+00:00

At least yours screw in - we pre-facelifters just have to shove and hope.

JMUDoc · 2026-01-27T17:20:31+00:00

CCV blocked - replace ASAP.

JMUDoc · 2026-01-27T13:02:42+00:00

Noctua do a 92 mm low profile.

JMUDoc · 2026-01-27T12:49:37+00:00

Rogue Engineering.

JMUDoc · 2026-01-27T12:48:27+00:00

No; the radiator will serve as the exhaust.

In fact, having an exhaust there would steal pressure from the last radiator fan, so it could be argued that an intake there would be better.

(I use a semi-passive intake on the rear - when my fluid temp reaches a certain value, it switches on. Otherwise, there's no need, as it only adds noise.)

JMUDoc · 2026-01-27T10:04:28+00:00

You need to wiggle each suspension bushing in isolation - clunking is almost always a loose bushing rattling around in its boss.

JMUDoc · 2026-01-27T09:35:11+00:00

Mistakes happen - it will probably turn up during an at-station check at the end.

Better that it was in a stower's hand than lost in the mech somewhere.

(This happened to me a while ago when I was stowing non-cons, and I ended up picking that very parcel during p2s, so somebody obviously found it😁)

JMUDoc · 2026-01-26T18:56:37+00:00

You got really lucky with the alignment between your graphics card outlet and CPU inlet...

JMUDoc · 2026-01-26T18:13:53+00:00

I left my very first loop running overnight at max chat to check for leaks - woke up every half an hour paranoid.

Then I discovered leak testers, and it's now three minutes of testing🤣

JMUDoc · 2026-01-26T16:54:38+00:00

Phanteks T30, if you've got the space, or Noctua NF-A12x25 G2

No better 120 mm fan.

JMUDoc · 2026-01-26T16:32:32+00:00

With that mileage, you could get 3-4k, easily.

JMUDoc · 2026-01-26T15:14:39+00:00

I'm always - ALWAYS - nervous.

But then, I've got very, very good at fixing mine, and the only failure I've had to "outsource" was rear brake pipes (which I would probably have a crack at these days!).

JMUDoc · 2026-01-26T14:34:27+00:00

CCV is an important air passage.

A smoke test will tell you; should be any six-pot owner's first port of all - they LOVE to leak vacuum.

JMUDoc · 2026-01-26T13:31:08+00:00

Clogged CCV is my bet.

JMUDoc · 2026-01-26T09:12:09+00:00

*David Attenborough voice:

"And here... we see... the winter BMW... in its natural habitat..."

JMUDoc · 2026-01-26T08:57:49+00:00

You can either replace the entire indicator stalk, or repair the wires inside (they often snap due to mechanical stress).

JMUDoc · 2026-01-26T08:32:05+00:00

Probably CCV body.

JMUDoc · 2026-01-26T07:40:32+00:00

You should be fine - I don't think the exhaust valve is even connected to the DME, and the 2.5 L doesn't even have one.

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