Over Heating-Help

[W1nk]

Hey guys,

so recently my car has started overheating and only had my major service done 6months ago which I put a new water pump in and had the radiator flushed and so on..

Last week got my new clutch put in n since then been over heating doubt it would have an input on over heating lol

But thermostat seems to be opening normally but oil temp jumps to about 110 normal driving n my water temp sky rockets almost 140 Also noticed on idle oil pressure sits at bout 2kg/cm2 maybe a fraction under thought it sat a little higher on idle?

anyone know what it could possibly be..

[mad082]

may be that your radiator is blocked (doing a flush won't help this, would need to be professionally cleaned or a new radiator).

it may also be that while your thermostat is opening at the right temp, it simply isn't opening far enough. i'd start with a new thermostat and then go from there.

[cobbadan]

Does it overheat on the highway or more around town in traffic ?

A fairly easy way to test your radiator for blockages is to take it out, boil the jug, turn the radiator on its side and fill it up with hot water. Then place your hand all over the fins and feel for any cold spots.

My car was overheating on the highway which meant i had a flow problem which was either water pump or blocked radiator. Turns out my radiator was about 50% blocked.

I tried my best to clean it out and i did get alot of crap out of it but not enough, it was still fairly blocked.

I got myself a second hand factory radiator off a member here for $50,, no blockages,, beautiful.

[W1nk]

More start stop driving it happens..have a feeling its the thermostat :s its the only thing that I havent replaced on th car haha but yeah noticed oil temp rises first and when it gets to bout 100 water temp starts rising and I can flick the heater on and water temp drops back to normal but oil temp just gets hotter.. ill take th radiator out today n try that though

[W1nk]

Okai got a new thermostat in and car is still over heating oil temp rises first to about 110 and then water temp just goes crazy any ideas what it could be

[Godzilla34]

Could be your water pump? Is your pump factory?

[cobbadan]

Did you check the radiator for blockages yet ?

[W1nk]

Yeah replaced water pump 8-9 months ago and veales supplied me with a water oem pump and yeah just flushed radiator twice and nothing came out but coolant that came out was cold when was dumped and water was taken to boiling point

[cobbadan]

You didn't take it out and feel for cold spots though ?

I flushed mine while it was in the car too. Did it a few times. Nothing came out but coolant. Seemed fine.

Was still 50% blocked though.

[cobbadan]

Only other thing is your fan clutch. Google it to find how to test it and what to look for.

[W1nk]

I replaced the viscus hub already im gonna take it out n get it properly tested or buy a new one

[mad082]

yeah flushing a radiator does little to tell you if it's blocked. the build up that blocks it isn't easily shifted. you could liken it to degreasing an engine using just plain water (and not a pressure cleaner). proper radiator flushes don't do much either. using the same analogy, they are like using a weak degreaser. they will take off any light oil, but won't do anything to the baked on grease (now it's starting to sound like a dishwasher detergent ad)

[cobbadan]

How'd ya go with this ?

[boostn0199]

Did you make sure you bled it properly most of the time thats the problem after flushing the system it takes ages for all the air to get out.

[reeceo21]

also is there pressure int the hoses if not maybe, theres a leak or water pump went poof

[koduRB25det]

1++

did you check your radiator cap condition. most of the it caused overheat. let us know how you go..

[Dasmbo]

Also check you bottom radiator hose if it is to old and gone soft not hard it

could be sucking itself together blocking the radiator had it happen to my

rb30 in my VK Commodore