So the problem is that on the cruising speed (>60km/h) my coolant temp gauge points like two or three minutes to 12 o'clock, even when the outside temperature being like +20 C it takes though just few stops and accelerations and the gauge will point just 12 o'clock but never when cruising for longer trips... I wouldn't be bothered at all, unless i hadn't the feeling, that fuel-economy would be better and car would run smoother (perhaps quicker too?) with coolant temp being +90C (gauge pointing at 12o'clock). Ah yes, the fan coupling has been replaced about 50000kms and the thermostat about 1500kms ago, both with original parts naturally. Could there something that would solve this problem or is this just normal for an M5 (3.8 -92)?
Thanks in advance and sorry for my confusing english
Driving normally and once warmed up, coolant needle tip is about 2mm to the left of the halfway white line.
Driving hard, coolant needle covers line and points straight up.
Driving very hard and in hot weather, coolant needle edges just fractionally over halfway mark.
Congratulations, your car is working perfectly!!
Regards
Ivan.
P.S. Start engine when cold, open coolant expansion tank lid and look inside and towards windscreen for a tiny black pipe that should be pouring a small amount of coolant in and around the tank. If you cannot see this tiny waterfall, the pipe may be blocked. I will post a pic tomorrow. A very useful preventative maintenance check, but I think your car will be fine.
__________________
"Never enter Karussell when on the brakes! I have gone round there on the roof, I know what I'm talking about." ~ Sabine Schmitz
the thermostat in these cars is a 79C unit, and you're gauge function sounds normal to me.
__________________
Mike
91 M5 Alpine White II, Silver Gray 3/90 production
17x8/17x9 M system with PS2, 20mm touring roll bar; Ground Control Coilovers; EAT Chip, CD43; bmw/nardi blackline steering wheel, 3.8 Cam Gears
08 535i / 6 speed
Space Gray; Gray; Sport/Premium/Nav
00 M5 Ti Silver; Imola/black sportiv --Sold
Engine:
Supersprint Headers, Dinan CAI kit and MAFS, Throttle Bodies, Cams, Ported heads, Exhaust, Custom dinan software, Evosport Pullies, Dinan clutch and lightened flywheel; Ignition solutions plasma coils
Suspension:
Dinan Stage 3 with front and rear Strut Tower Braces, Beastpower Sway bar brackets, Dinan Wheels with 275/285 PilotSport, X5 Thrust arm bushings, Stoptech 355mm 4 piston front, 355mm 2 piston rear brake kit, Dinan 3.45 diff
Interior/Misc:
Eurodash, updated steering wheel, Bluetooth retrofit, Sirius Retrofit, hardwired V1, Widescreen Mk4 nav, M audio retrofit, Ice Link, BSW Stage 1 speaker upgrade, bmw towbar
nice to hear that...thanks for answers and I suppose my car is also behaving normally, when it comes to oil temperature? It climbs to 90C normally, and during harder driving little warmer.
Hi EricM5, i need my curriousity satisfied are you running an M5 in Nigeria must be difficult doing this!! Please let me know these is true... i have an e30 evolution i have kept in storage and just got an e34 m5 so considering if i should send car to Nigeria or to spain, By now i guess you would assume i am Nigerian and you would be right..
it takes though just few stops and accelerations and the gauge will point just 12 o'clock but never when cruising for longer trips...
I wouldn't be bothered at all, unless i hadn't the feeling, that fuel-economy would be better and car would run smoother (perhaps quicker too?
) with coolant temp being +90C (gauge pointing at 12o'clock). Ah yes, the fan coupling has been replaced about 50000kms and the thermostat about 1500kms ago, both with original parts naturally. Could there something that would solve this problem or is this just normal for an M5 (3.8 -92)?
Linear Mode
