The AUSubaru.com.au Forums

yesterday my car (ea82t) started to overheat from just normal driving (like half an hour drive) on the way for some sand 4x4. by the time i got there temp needle was just before the red. normal operating temp is like a 1/4 or a third up the gauge. throughout lots of cooling down periods temp fluctuated between just over half and up to the red. i even got it to there on way home from work today-10mins.

obviously checked coolant, both fans (including new thermo), oil etc. water pump seems fine too. rad fins arent blocked. any other ideas?
there is one other thing- i remember i had just put in a little morey's upper cyl lube/injector cleaner after hearing about how good it is, and it says can also be used as lead replacent. would this cause my overheating?
else i may just take it to a rad shop as need it fixed by this w/e. argh!

cheers for suggestions

matt.

Any steam coming out of the exhaust???

Dave

simple check might be thermostat problems .. try taking it out and running to see if it still overheats... or it could be a water pump problem

Second Mattim's suggestion. Definitely remove the thermostat and run it without it to test, it's probably not opening propperly.
Chuck the thermostat in a cooking pot of water on the stove and watch it to see if it opens too.

my thoughts exactly

Agreed... only takes a small air bouble sitting above the thermostate to stop even a working thermostate opening... remove it to be sure.

Dave

yer check your thermostat... also check your radiator wires are connected and it might be a good idea to flush your radiator out with a hose...

wrx_nut

mmk took thermostat out-was pretty easy. tested it in boiling water and opens up fine. will put some water back in n run with out it now to test car.

tested car with no thermostat. after 10 mins of flogging it round the block temp still went up, gettin close to the red. ill see if i can get it into balcatta rads tomoz coz i dont know whats going on.

when i took my EA82 in for service they didn't bolt on the pully for the 2nd fan properly, i only did it finger tight and it got me home

id be checking your temp sensors as iv had one stuff up in the vortex and giving bad readings.... i actully put another radiator in it and it was fine...

put thermostat back in this morning and gave it a 15 min thrash round the block again. but could only get the temp to just above half. hmmm it has sorta fixed itself.....more testing necessary i think.

get antother radiator i reckon and try that or take yours out and give the fins a good clean as they could have mud it it also check the water it the overflow bottle is getting filled and over flowing it could be a blown head gasket, they leak into the water jacket on boost and pressurise the cooling system..

bryan

maybe you should just get a carby motor? hahaha

alex

as i recall your carby has had cooling issues as well ales...

dave

mmmm nar not really...not red lining..just 2/3rds ea82's are awesome dude! she sits on about 1/8th temp all day long

alex

sounds similar to my problem, only now i think its had it!! its worse!!

my temp used to fluctuate after about 40 mins of normal driving,
but i've had 3 thermostats, a new radiator and a c02 test (came back all good) nothing helps, i still cant find the prob.

Just remember EA's are great for bizarre ways of blowing head gaskets or just weird things like corroded out cooling galleries.

I drove my last MPFI for nearly 1 year with a blown head gasket (usto get hot hot!). Basically used fuck all water or showed any signs of a blown head. Then when the unspeakable happened and I had to strip the car I noticed the head gasket.

DO NOT under estimate the effects of a faulty radiator cap... maybe look into that too.

Dave

I've just finished pulling apart my 3rd EA82 this year or was that four, and all had beautifully intact head gaskets. Some heads were cracked though!