overheating ...sometimes

[siksivic]

when sitting at the lights or sitting in traffic car starts to overheat but only sometimes.. It generally happens during the day never night and when i have my H.I.D on in late arvo the temp tends to rise.. I have a feeling it is an electrical problem.
To date i have done a radiator flush, changed thermostat cant seem to work out problem .... could it be that my fan isnt getting enough power because of the H.I.D , any help would be appricated.

[[[d a n n y]]]

it could be that your radiator is rusted inside and not cooling properly.

[siksivic]

anyway to determine if the radiator is fcuked ? what about thermoswitch???

[RMN15N]

Firstly, your HID's wouldnt have anything to do with this im assuming,
wait till your car has cooled down.. then flush the radiator fluid out and put just plain water in do this a couple of times twice maybe..
then put coolant in
Check for any loose connections from ur radiator that may be leaking slowly
overnight or somthing,
if that doesnt solve your problem get your waterpump checked.
one more thing
is the fan turning on?
if it doesnt then it's your fan switch or thermo stat, if it all turns on n that
then its most likely the radiator
just get a new one its cheaper

[[[d a n n y]]]

thermo stat will operate..normally.
but since the radiator is rusted internally..
it wll not function properly..
to visually check..
u can see rust water inside your radiator.
even though u mayhave flushed it..
the rust water will grow and your coolant colour will got brown

[siksivic]

its wierd though, the water is not brown , when i turn my headlights off the temp drops thats why i thought i may be an electrical problem. like the hid are zapping the power from the fan and its spinning too slowley and its not leaking the coolant levels have hardly dropped, thank you for all the help

[RMN15N]

check ur battery? maybe its not producing enough power to power everything?

check all the hoses to be sure that ur not leaking anything

[Slow96GSR]

check ur battery? maybe its not producing enough power to power everything?

check all the hoses to be sure that ur not leaking anything

Battery creates power? Lol, you mean Alternator!! Check both of them though. Make sure the fan is connected so it turns on.

1: Check connections.
2: Check for rust or debris in the radiator, drain and pull off the lower hose and stick your finger in the radiator. Also a flow test to see if it has blockages. Just stick a hose in the upper inlet and turn it on full then see if it's draining fast or slow.
3: Check the thermostat. I bet you already did this and it's good!
4: Check the water pump. Time consuming and might not be a bad thing if it hasn’t been replace in a long time. Thought they can last many many years a part will go out when a part goes out. Also might be blocked with debris from the motor and radiator.
5: Have a pro check it out if none of this works. There’s a lot more I can tell you but I have been typing all day and my fingers figging hurt!!

[RMN15N]

Battery creates power? Lol, you mean Alternator!! Check both of them though. Make sure the fan is connected so it turns on.

1: Check connections.
2: Check for rust or debris in the radiator, drain and pull off the lower hose and stick your finger in the radiator. Also a flow test to see if it has blockages. Just stick a hose in the upper inlet and turn it on full then see if it's draining fast or slow.
3: Check the thermostat. I bet you already did this and it's good!
4: Check the water pump. Time consuming and might not be a bad thing if it hasn’t been replace in a long time. Thought they can last many many years a part will go out when a part goes out. Also might be blocked with debris from the motor and radiator.
5: Have a pro check it out if none of this works. There’s a lot more I can tell you but I have been typing all day and my fingers figging hurt!!

LOL i forgot to type alternator.. +1 for the correction
and another thing your post is basically what danny and i have already told him
besides get a pro to check this out if nothing works.. rawt!

[siksivic]

water pump was checked when did timing belt not that long ago , did a full radiator flush and flushed water through engine with radiaor hoses disconnected , no rust or brown water. Changed thermostat. Fan does come on but takes a long time .. is it time for new radiator.

[macoman69]

No.
Time for a new car nick.
DC2R for the win mate :) :thumbsup:

[saxman]

what hid components are you using? A proper set up should draw less power than your oem halogen lights, so it shouldn't be a problem, however, with most cheap aftermarket hid set ups, the ballasts are known to do all sort of funky things.


Do you have them wired directly to the stock wiring or via a relayed wiring harness?

[fatboyz39]

so your saying whne your turn off/on your HID the temp gauge flacuate? well if thats the case then i would check the wiring.

[destrukshn]

maybe your earths.
my temp was playing up, when my earths shit em selves.

[siksivic]

the ballast plugged into the oem plug ... i think its a cheap nasty set.. look sik but .. haha.... this problem isnt a thing that happens all the time that is why i believe it to be a electrical problem . we sat at the mechanics for like 30mins playing with all combinations of turning head lights on at idol and nothing happened .. i dont want to buy a radiator if mine is fine , my battery reads about 13V + on rsm .

*edit* the earth on the radiator fan we checked ... however i dont have a earth from my block to chassis , is this a problem ... i dont think they put it on when the conversion was done ..

[EG5[KRT]]

i would check for stray current in the radiator ..

then check the earths of ur hid kit

then if all else fails put a temp guage in ur coolant pipes and test and monitor the water temps...

[Slow96GSR]

...*edit* the earth on the radiator fan we checked ... however i dont have a earth from my block to chassis , is this a problem ... i dont think they put it on when the conversion was done ..

There should be 2 grounds coming off the block to the chassis... one from the transmission and one from the valve cover. Some cars have more but those two are a must.