1998 Honda Civic EX Overheating

1998 HONDA CIVIC

MONEYCOUNT

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27 POSTS
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My friends Civic is overheating real quick. He has replaced with new parts the water pump,radiator,thermostat,coolant temperature sensor,and one other sending unit or sensor which I dont know exactly what its for but it is related to cooling system somehow.First,shouldnt the new radiator if its started with the cap off not push coolant back out through the cap? Second, after it starts the coolant just sits there and its not cirulating.So is it safe to say that its either the thermostat not opening or is it just a bad radiator or something totally different? Coolant doesnt seem to be reaching the engine block.I wouldnt think the thermostat would cause it to push coolant back the other way. Could anyone please help? Thanks

I just thought of something, are some radiators sold with a plug/cap in the lower hose end? Just a thought cause my friend isnt the sharpest pencil in the drawer at times. lol

Oct 9, 2012 at 3:25 AM

SATURNTECH9

CAR REPAIR CONTRIBUTOR
30,869 POSTS

So is the radiator fan coming on?also do both the upper and lower radiator hoses getting really hot?

Oct 9, 2012 at 3:36 AM

MONEYCOUNT

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27 POSTS

Actually the fan stays on when the key is turned on plus the upper hose gets a little warm but the lower hose is really cold if you asked me.Not warm at all.

Oct 9, 2012 at 4:27 AM

MONEYCOUNT

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27 POSTS

Does the vehicle use a fan that comes on intermittenly?

Oct 9, 2012 at 4:31 AM

CJ MEDEVAC

CAR REPAIR CONTRIBUTOR
11,004 POSTS

MAYBE THERE IS AIR IN THE SYSTEM

HERE'S THE PROCEDURE ACCORDING TO MITCHELL I IN THE PIC BELOW

I WAS ONCE AT A SHOP WHERE SOME FELLER HAD INSTANT OVERHEATING---NO ONE COULD FIGURE IT OUT---THEY TRIED MANY THINGS.....NO ONE COULD FIGURE IT OUT...EXCEPT FOR THE "SHARP PENCIL" IN THE SHOP (NOT ME)....SOMEHOW, THE OWNER FELLER MIS-ROUTED HIS SERPENTINE BELT (AND SOMEHOW IT FIT).....WITH THIS CONFIGURATION, THE WATER PUMP TURNED BACKWARDS...THE IMPELLER WOULD NOT MOVE WATER!

THIS WAS YEARS AGO, I HAVE NO IDEA WHAT THE CAR WAS

KEEP US POSTED

THE MEDIC

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Oct 9, 2012 at 5:07 AM

MONEYCOUNT

MEMBER
27 POSTS

Hmmmmm, Now thats a thought because he does have a belt squeal.Now would this cause coolant to erupt out of radiator when the cap is off while starting then quit when started?

Oct 9, 2012 at 5:17 AM

CJ MEDEVAC

CAR REPAIR CONTRIBUTOR
11,004 POSTS

MAYBE A BLOWN HEAD GASKET?

COMPRESSION SORTA SLOWLY BEING INJECTED INTO THE WATER JACKET WHILE CRANKING?

COMPRESSION MOSTLY GOING OUT THE EXHAUST WHEN IT'S RUNNING?

I'M THROWIN' STUFF

CHECK COMPRESSION

KEEP ON TALKIN'....OTHERS TEND TO JUMP IN AND ASSIST

THE MEDIC

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Oct 9, 2012 at 5:27 AM

CJ MEDEVAC

CAR REPAIR CONTRIBUTOR
11,004 POSTS

DID THE WATER PUMP TURN FREELY....WHEN IT WAS INSTALLED?

I DON'T KNOW WHAT YOU HAVE....PLASTIC OR METAL

THE PIC AT THE BOTTOM WAS OF ONE THAT FAILED OVER TIME (STILL CRAPPY)

DOES IT SPIN FREELY NOW, IF YOU REMOVE THE BELT?

IF FOR SOME REASON YOURS IS PLASTIC AND HAS FAILED (MAYBE IN A BIND DURING INSTALLATION)

TO AVOID REMOVING THE PUMP

YOU MIGHT TRY TAKING THE LOWER HOSE OFF OF THE PUMP---SHOVE A PIECE OF CLOTHES HANGER IN THE HOLE (TO "STOP" A "GOOD" IMPELLER) THEN TURN THE PULLEY BY HAND TO SEE IF IT INDEED...SEE IF THE IMPELLER WANTS TO TURN, AND NOT FREEWHEEL WITH NO RESISTANCE

THE MEDIC

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Oct 9, 2012 at 5:44 AM

SATURNTECH9

CAR REPAIR CONTRIBUTOR
30,869 POSTS

If both hoses are not getting really hot when the engine gets hot you have coolant not circulating.I wouldnt do a compression i would do a chemical block tester test which they rent at auto zone.

Oct 10, 2012 at 4:33 PM

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