2.8 V6 A Bit Warm

[fatblokes]

hi all, firstly i would like to say a big hello to everyone, i have posted before but failed to say hello so HELLO! Now, i now have a 2.8 v6 manual 96 p reg galaxy, i got this as my 2.8 auto let me down, the car runs really well and all seams good but the temperture seams a bit warm compared to my last galaxy's i have had. in the past i have had 3 galaxy's 1 a 2.3 and 2 being 2.8 all of them have always had the temperture needle sit in the middle of the word norm on the dash but this one seams to sit on the m of the word norm or just past. the fan does kick in but it dont seam to kick in as often as the others i have had, could it be the sensor that is on the rad or does any body think there could be something else wrong? i still have a complete car with a 2.8 engine with 82,000 miles on it so i have a lump if i need one but i was hoping it may be something less drastic. also you can smell it is a bit warm. the oil temperture sits around 113 is this norm? i have never noticed this on my others.

thanks in advance

[cyborg]

The vr6 does run hot ! 113 is not unusal however there are a few things you can check ..

 

Fans

switch on aircon do fans come on if not

check 40 amp fuses engine bay nearside box beside shock piller if ok

Remove undertray if exists.. then look for green resister behind water bottle plug at green resister connect up battery and measure both connections are giving 12v its not uncommen green resister to fail.

fan should come on around 86 degrees there are 5+ phases to fans dependent on auto or manual.

 

Temp sensors

The main temp sensor is black half way down rad you can uplug and test by putting a wire across connection 1+2 and 2+3 fans should come on on both phases its a bit tight to get to easly done by removing top rad hose.

The three other sensors are ;

yellow - additional water pump, run on pump

blue - sends temp to dash + ecu

brown - A/C fan

 

Themostat

Check the lower rad pipe is stone cold until the temp gauge reaches the half way point, if it gets lukewarm straight away then the thermostat is stuck open or missing, if it stays cold then it is stuck shut.

 

Waterpump

Look for a trickle of coolent below it ,a sure sign its on way out, if all above works then flush system then if still not low live with it or change waterpump .

 

Vagcom

you can have a look and see if run on pump has had it also check temp see if dash speaks with forked tongue :rolleyes:

[fatv6]

The vr6 does run hot ! 113 is not unusal however there are a few things you can check ..

 

Fans

switch on aircon do fans come on if not

check 40 amp fuses engine bay nearside box beside shock piller if ok

Remove undertray if exists.. then look for green resister behind water bottle plug at green resister connect up battery and measure both connections are giving 12v its not uncommen green resister to fail.

fan should come on around 86 degrees there are 5+ phases to fans dependent on auto or manual.

 

Temp sensors

The main temp sensor is black half way down rad you can uplug and test by putting a wire across connection 1+2 and 2+3 fans should come on on both phases its a bit tight to get to easly done by removing top rad hose.

The three other sensors are ;

yellow - additional water pump, run on pump

blue - sends temp to dash + ecu

brown - A/C fan

 

Themostat

Check the lower rad pipe is stone cold until the temp gauge reaches the half way point, if it gets lukewarm straight away then the thermostat is stuck open or missing, if it stays cold then it is stuck shut.

 

Waterpump

Look for a trickle of coolent below it ,a sure sign its on way out, if all above works then flush system then if still not low live with it or change waterpump .

 

Vagcom

you can have a look and see if run on pump has had it also check temp see if dash speaks with forked tongue :rolleyes:

firstly thanks for replying, there is a lot there to look at, i have taken thursday of work and i am not using the car as yet so ill take a good look at all of the things tyou have listed.

once again thanks.

Mark

[fatblokes]

hi again cyborb, i tried the air con and the fans did not come on, i left it for about 2 mins, i checked the fuses all looks ok. the green resister you mentioned, i was not sure where that was located, any chance of a picture? the others i have not checked yet.

thanks

[cyborg]

hi again cyborb, i tried the air con and the fans did not come on, i left it for about 2 mins, i checked the fuses all looks ok. the green resister you mentioned, i was not sure where that was located, any chance of a picture? the others i have not checked yet.

thanks

 

 

 

on the 2nd picture by the red power lead undo that bolt and resisters easly pulled out normally they crack expose wires

which rust and disconnect over time.hence giving you no power to fans.

[fatblokes]

thanks once again, i take a look tomorrow now.

cheers

[fatblokes]

hi again cyborb, i had another look today, and as a precaution changed both the resitor and the fan control relay from my other car and noticed one of the fans was not coming on (the top one) so i swopped both of the vans also, i have fans running now if i put the air con on but the temp still gets warm, the bottom hose is not getting hot so i think it is now the thermostat. on that not the fans still do not seam to kick in early, could this be as the temp sensor on the rad is on the bottom hose side? i will pop out and get a thermostat but do you think it may be worth changing the temo sensor also while the coolant is drained?

thanks for you help

[cyborg]

hi again cyborb, i had another look today, and as a precaution changed both the resitor and the fan control relay from my other car and noticed one of the fans was not coming on (the top one) so i swopped both of the vans also, i have fans running now if i put the air con on but the temp still gets warm, the bottom hose is not getting hot so i think it is now the thermostat. on that not the fans still do not seam to kick in early, could this be as the temp sensor on the rad is on the bottom hose side? i will pop out and get a thermostat but do you think it may be worth changing the temo sensor also while the coolant is drained?

thanks for you help

 

temp sensor do get less sensistive over time due to limescale bit like a kettle unplug it sandpaper it pop it back or replace up to you .

 

on replacing the thermostat be carefull some aftermarket ones are thinner metal causing the housing to leek .its three bolts to remove housing from engine see FAQ Number 42 for more info

[fatblokes]

all sorted, i changed the thermostat, what a pig that was with my sausage size fingers but i kept on and i mangaged to do it, the temp sits on the o and r of the temp gauge and goes up to the m and the fan comes on and it sits back in the middle. great.

thanks very much cyborb for all you help.