rick_rabies

Ok.. bear with ne
95 dx automatic
my sistr bought the car for $450. The guy said it overheats on the highway and fan is always running n waterpump has been replaced.

so replaced spark plugs (one was damaged)
Oil was clean when changed.
coolant is green no sign of oil.
no leaks anywhere.
no CELs
aftr i replaced the hedgasket it still ovrheated but seemed to hav more power.
bottom radiator hose never got hot.
I even removed the thermostsat n the bottom hose finaly got hot...but stilll ovrheats when driving.
Fan is always on (hardwired)
At idle or parked temp drops back down? ???????????


ANYONE EVER HEAR OF A NON OEM WATERPUMP NOT SPINNING INSIDE AT HIGHER RPMS???


Frign stumped

tonyhatchetman

I've heard that but I was having the exact same problem and ended up being the radiator , replaced and no problems since

One way I would check to see if the water pump is working is open the radiator cap start the car and see if you can see any type of flow .

hondad6

Try checking the fan direction if it is reversed it will overheat at speed. It creates a high pressure situation between the fins of the radiator and does not allow air to flow through. It clogs it in other words. I have seen a hard wired fan do this before.

rick_rabies

Forgot to mention radiator has been replaced.
the fan is sucking air pulling air in as of right now

tonyhatchetman

Might just be a bad sensor ....is it actually boiling over hot ?

rick_rabies

Yes the coolant starts to boil
temp shows cold when cold n warms up as normal then rises as the gas pedal is pushed in and driving

NotAJDMFanBoy

I was there while the head gasket was replaced.

The top hose was very hot, hotter than the hose on my GSR swapped Civic.

The head gasket had been changed before, it was a Fel Pro gasket, not the MLS but the graphite impregnated kind with a formed metal thing for the center.

Stock head bolts were reused, torqued to 25, 35 and then 60lbs in a circular pattern from the inside going out.

All old gasket material was scraped off and cleaned with solvent.

The water pump was making noise, could it be bad and still spin but not pump water?

It sounded like the motor had been overheated pretty bad, up into the red.

maybe should try testing the coolant for combustion gases.
$25 rental plus $8 for test fluid at Autozone.
http://www.autozone.com/autozone/acc...ester/_/N-25dh

Also, is there a normal temperature for the head to be at, at operating temperature? I could measure mine after a drive I guess, even though it's a different motor and has a dual core rad. I have a have a non-contact thermometer you can borrow if you want that other water pump still.

motegicivic

The guy you bought it from said he replaced the water pump? how long ago? If it is not OEM there might be a problem with it.

Did it run hot and overheat before the headgasket gave out? maybe the head is warped?

rick_rabies

Thanx tim :D

Hedgasket showed no signs of failure
the waterpump is non oem whines n seems to make alot of noise. No leak from it.

Iv been searching n found a few that say the non oem pumps can fail to spin well enough to keep the stuff cool.

Stankn D15's

rick_rabies

Any more input before i switch the pump?

motegicivic

I would say the pump, esp if it making noises. If it works come back and post it.

NotAJDMFanBoy

bump bump. Did it fix it?

rick_rabies

Fixed..
I took off the "new" waterpump they supposedly put on.
and the propeller thing jus fellout -_- frign junk.

Notajdmfanboy hooked me up with an oem one n workx perfect now

motegicivic

I had a feeling, has to be OEM, to get more than 6 months of service.

By the way coolant in bad shape will eat cheap waterpumps fast.

NotAJDMFanBoy

Awesome.
I know coolant becomes acidic over time and that eats the water pump seals. Would a litmus test accurately tell if the coolant is ok, or not?
It's starting to get chilly, so it will be good to check the concentration. It may be best to check all the heater hoses and get fresh coolant and distilled water. I've got some extra heater hose, gotta check how long though.