Replace a water pump on a 1991 civic

I had an older vehicle that overheated. I flushed out the radiator twice, but it was so clogged up, I had to replace it, so check the radiator. If you inspect the radiator from the filler neck, you can see if there is crud build-up on the tubes. The problem could be the water pump. Typically when water pumps fail, they start to leak from the weep hole(s) on top and /or bottom. Is there any leak from the pump? If there is, that is indication that the pump need to be replaced. Hope this helps !

No it is not a common problem. You will need a leak test done using a rain maker fixture to see where the water is coming in.

I hope this helps, it all I could find.

1991

CRXL4 - 1.5L 1493cc type D15B2 - MFI GAS SOHC
2 vehicles
1988 - 1989

CRX 1500 HFL4 - 1.5L 1493cc - MFI GAS SOHC
3 vehicles
1988 - 1990

CRX DXL4 - 1.5L 1493cc type D15B2 - MFI GAS SOHC
2 vehicles
1990 - 1991

CRX HFL4 - 1.5L 1493cc type D15B6 - MFI GAS SOHC
4 vehicles
1988 - 1991

CRX SIL4 - 1.6L 1590cc type D16A6 - MFI GAS SOHC
4 vehicles
1988 - 1991

CivicL4 - 1.5L 1493cc - MFI GAS SOHC
1 vehicles
1988

Civic 1500 DXL4 - 1.5L 1493cc - MFI GAS SOHC
4 vehicles
1988 - 1991

Civic 4WDL4 - 1.6L 1590cc type D16A6 - MFI GAS SOHC
3 vehicles
1989 - 1991

Civic CXL4 - 1.5L 1493cc - GAS
4 vehicles
1992 - 1995

Civic CXL4 - 1.5L 1493cc type D15B8 - MFI GAS SOHC
4 vehicles
1988 - 1991

Civic DXL4 - 1.5L 1493cc type D15B2 - MFI GAS SOHC
4 vehicles
1992 - 1995

Civic DXL4 - 1.5L 1493cc type D15B7 - MFI GAS SOHC
3 vehicles
1993 - 1995

Civic Del Sol SL4 - 1.5L 1493cc type D15B7 - MFI GAS SOHC
2 vehicles
1990 - 1991

Civic EXL4 - 1.6L 1590cc type D16A6 - MFI GAS SOHC
4 vehicles
1988 - 1991

Civic LXL4 - 1.5L 1493cc type D15B2 - MFI GAS SOHC
4 vehicles
1992 - 1995

Civic LXL4 - 1.5L 1493cc type D15B7 - MFI GAS SOHC
1 vehicles
1988

Civic SEL4 - 1.5L 1493cc - GAS
3 vehicles
1989 - 1991

Civic SIL4 - 1.6L 1590cc type D16A6 - MFI GAS SOHC
2 vehicles
1992 - 1993

Civic VXL4 - 1.5L 1493cc type D15Z1 - MFI GAS SOHC

Water pumps have what is called a "weep hole" under the main pulley shaft. When this hole is leaking it is time for a new pump. See if you can check this area a bit better with a mirror and flash light. If you go after a water pump gasket, might as well replace the pump also any way. Don't forget the anti-freeze.

honda have their water pumpin the timing belt case, it also run with the water pump. so taking out the water pump you have to know what you are doing. you need a person with some experience . or buy the book for your vehicle and do it .

Water pumps leak when they start going bad... it's kind of a warning sign before they let loose. So there's a good chance that you're right.

If water is coming out the bleed hole then yes the pump is bad. On link below tells you haw to replace if your car is a 91 civic.

http://www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?chapterTitle=Engine+Mechanical&partName=Engine+%26+Engine+Overhaul&pageId=0900c15280061770&subChapterTitle=Water+Pump&partId=0900c152800616e3

Remove and raise upper hose at thermostat end and remove lower rad hose.
Fill rad with a hose and watch for flow from bottom rad hose and/ or bottom rad hose connecton.......water should fall though rad easily.
Honda rads are cheap.....any restriction....replace rad.

Remove thermostat....fill thermostat housing with hose and watch for water flow at bottom rad hose.
Flush good.

Remove heater hoses.......flush back and forth until a good flow is present "With heater control set to hot" if no or poor flow....replace heater core.

Stop leak can plug everything.

Also.......not likely causing over heating....but ....at your mileage,if you do not know if the timing belt has been changed.....CHANGE IT NOW!
Water pump is optional at this mileage.

Sounds like a blown coolant hose, or a faulty coolant water pump.

COULD BE COOLANT SENSOR,HEAD GASKET,CHECK THE TIMING,THE PROPER MIXTURE OF COOLANT,WATER PUMP.DID YOU HAVE IT CHECKED OUT?ANY LEAKS?HEAT WORK WITH FAN?