Temp gauge reading to high.

[1998GTS]

As the title says,Open road driving it sits just under half.Around town sits just over half,Is this about right.seems pretty high to me.My old VN only moved off the first make.Water levels are ok.

[Brett_jjj]

Try replacing the thermostat and radiator cap and also change the coolant and flush out the system.Some people on here say their VS normally sits at half to 3/4 on the temp gauge.My VS V6 sits at the third mark on a hot day on the highway and on a cool night (highway) it sits on the second mark.Around town(sitting in traffic) it will go up to half way,then the thermo fan kicks in and takes it down to about the third mark on the gauge.(it just keeps repeating this when sitting there idling).When cruising around town slowly it sits around the third mark.Maybe try replacing the temp gauge sender.I think that 3/4 showing on the gauge at normal running temp is too high.Doesnt leave much room on the gauge once the engine does get hotter then normal.(like when going up a mountain range etc).

[1998GTS]

Thanks mate.I've done all that you've said,(bar the gauge sender) and still the same.

[Brett_jjj]

The only other thing you can do(besides changing the temp sender),is find someone with a scantool and get them to check the actual coolant temperature to make sure its ok and within spec and not actually running hot...

[1998GTS]

Thanks.I'll do that and see how i go.

[VRSS5L]

I've noticed my Temp has been creeping up in my SS. Sits at 3/4 level sometimes, especially hills. It has been drinking a bit of coolant/water too. I need to sort it fast as I'm moving home soon and may end up carrying a lot of weight over 1000km...

VR SS 5L, with 175000km. It has a recent coolant flush (100km ago). I guess thermostat is the next step. Is this a big job? Any other suggestions out there?

Cheers,
Mike

[MEANvsUTE]

yeah mine does the same dudee, doesnt matter the fan kicks in about just under 3/4 and does its job. it shouldnt get so hot if u dont stop driving so the air is pumping through

[Absorb]

I had the same problem with my VS and couldn't find a way to fix it until one side of the plastic housing on the radiator started to leak. I had it replaced and the repairer told me that the bottom half of my radiator was nearly completely clogged. He professionally cleaned it and flushed the engine and I dont have the problem any more

[steveowilliams]

Hi I have a 1995 VS V6 and have had it 9 years it also runs at about the same place on the gauge as yours. I have had several overheating issues over the years, before we bought the car the dealer had air fitted as it was from western QLD and a one owner, probably a farmer.
Things I have been told by commodore nuts no disrespect intended, coolant is vital to V6 commodores and you should only use genuine holden coolant. That was from several commodore people and a radiator guy. Secondly I did have a problem with the coolant sensor which is one of two on the VS V6 I replaced it and all was well but at that time it was going over the 3/4 mark. I found this sensor fault using a manual and the diagnostic plug with a paper clip and following the flashes on the engine light.
Also with the air OFF the fan cut in is at a different temp than when the air is on EG. the fan comes on later with the air off. Bare in mind that is on my car which has non standard air.

I have also had a header tank problem with my VS as Absorb had, the hose started to leak I tried to tighten it and cracked the spigot. The radiator was blocked and so had it cleaned.

Anyway hope this is of assistance.

[rob_rob]

my vr neva has neva gone above 1/2
but its all new :P

[VRSS5L]

After the thermostat didn't make any difference, I had the radiator pulled for a cleanup. They found it 65% blocked! Needless to say, the car doesn't heat up as much as it used to! All good now.