cooling issues

Dec 21, 2007 3 Replies
J

So...about 2 weeks ago I replaced the water pump on my 1985 CJ-7. Since then it has idled a little warmer than usual, or when driving in slow traffic. But still my gauge didn't read that it was "danger" hot, and it would go back down after a bit of faster driving. Well today I get home and see a puddle quickly forming under the engine....coolant....pop the hood and I can hear the coolant boiling in the rad. hoses and what sounds like hissing coming from my new waterpump, which is extremely hot to the touch. Do I need another new waterpump? Am I overlooking something? Why is there still coolant in the overflow? Anyone with any insight please help!!



Thanks Jeremy


Vote
Twitter Facebook LinkedIn
J

Waterpumps come in either of two operational directions, one for V-belts and the opposite for serpentine. Look at the impeller on your old pump and the new one to make sure they are the same direction. A reversed waterpump would work sort of at idle, but would cavitate and loose flow at operating speeds.

Jeff

Vote
Twitter Facebook LinkedIn
M

Why did you change it in the first place?

Do you have a fixed fan or a clutch fan?

As others have noted, there are two pumps that fit on. You can look at them and see the difference. The V belt one is snail shell shaped with the entrance at the bottom of the pump and the spiral 'shell' shape clockwise. The reverse pump has the opening toward the top of the pump with the spiral shape counter clockwise.

Mike

86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail > So...about 2 weeks ago I replaced the water pump on my
Vote
Twitter Facebook LinkedIn

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required