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How do you fix a coolant leak?


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2010-05-04 17:40:15
2010-05-04 17:40:15

I have 2 leaks in my '98. One on top of the radiator which is fairly small and another was on this wierd 90 degree angle pipe that came out from the engine and into an opening behind the tension pully. I patched both leaks with JB Weld. After about a month the leaks came back and the JB Weld was peeling off. That stuff is incredibly strong and I did this twice thinking I didn't mix the resin and hardener correctly, and it happened again. It must have been the constant heating and cooling of the vehicle but the JB would eventually peel right off. I knew if JB didn't work I doubt anything will. I had no other option but to replace the parts, and I would take it to an expert unless you are one yourself. Also, the radiator is removed from underneath the car.

Answer 2Ideally you need to know from where the coolant is leaking and then fix the problem part. For the person above it is a plastic coolant elbow and can be purchased at a autopart store (autozone or pepboys or orileys) depending on the year for your car there my be 1 or 2 elbows for approx $10 each. Replace both at the same time. To replace them you may need to loosen/remove the tensioner assembly under the alternator where they fit into and then carefully reasemble.

Hope this helps.


Answer 3:there are two coolant elbows that connect from the block to the alternator bracket. little cumbersom to replace... but not too bad. these elbows are available through GM, I'd stay with OEM parts with the cooling system they cost next to nothing and they are used on the 3800 because the alternator bracket doubles as a coolant passage. Make sure you lube the O-rings well on the new elbows so they don't tear when installing. Also you will loose lots of coolant when the bracket is removed so have a collector handy and a bottle of DEXCOOL. I would also asses the rear valve cover gasket while you're in there, for this opperation will have to be repeated if it starts to leak!

Tip: Ask the GM dealer for a parts print out on the alternator bracket... that will give you a diagram with all of the mounting bolts to remove, also you should only have to remove the serp. belt, the overflow resivoir, and the alternator to be able to remove the bracket.

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Related Questions

How to fix this depends on where specifically it is leaking from.

Fix the coolant leak.Chances are the water pump has a problem. They were known for having a leak and with no coolant you have no cooling.But you may have a coolant leak elsewhere also. Your cooling system will need to be checked out.

Look for a leaking hose, water pump, or raditor find the leak and fix it.

You have a coolant leak.You have a coolant leak.

Just because there is a leak doesn't mean it will overheat instantly, but if you do not keep adding coolant or fix the leak you will have engine problem

A leak in a coolant system can usually be fixed by replacing a hose. If the leak is at the end of the hose, a new clamp might be necessary. If the radiator is leaking, the radiator might need to be replaced.

Coolant leak, possible heater core. Suggest to have it pressure tested to find leak.

In general, yes a coolant leak in a 2002 Bonneville can be fixed. The issue whether it is worth the money to fix the leak. If the coolant is leaking from an upper or lower coolant hose, the repair is simple and inexpensive. If the coolant leak is from the radiator, it will be a bit more difficult and/or expensive to repair. Moving up the scale, if the coolant leak is coming from a manifold gasket, it will be still more expensive. Likewise for a coolant leak from the heater core. And at the upper end of the scale, if you are leaking coolant from a cracked engine block, you're looking at replacing the engine.

The coolant will normally leak into the oil or into the cylinder

Because some opening formed which is allowing coolant to leak out.

There are innumerable points for the leak, cost for repair will depend on where it is. You can drive the car only if the leak is minor and the temperature gauge shows normal temperature.

if car is leaking fluid , it has a leak a leak and steaming indicates it is engine coolant and the engine is over heating find the leak and fix it before your trash your engine

You are probably low on coolant. You need coolant to heat the cabin and cool the engine. Add more coolant and take your vehicle to a shop to find/fix the leak.

no there is not because if water can leak outside of gasket water can leak inside too causing coolant to mix with oil eating the babbit from bearings

Yes, the water pump can leak if you do a coolant flush.

Any coolant leak can cause an overheat.Any coolant leak can cause an overheat.

If you do not visibly see a coolant leak, have the cooling system pressure tested. If the leak is not obvious it could be internal.

Add coolant and then find the leak. u can add coolant with a dye in it that will show where leak is under a black lite fix the leak, correct fluid level disconnect battery for ten minutes to clear signal reconnect battery go for a drive

yes, BUT FOLLOW DIRECTIONS. usually you have to drain the old coolant, reconnect hoses, fill with water, pour in the stop leak, let the engine run for a while, empty, refill, let the engine run etc... please be sure to follow the directions.

first determine where the leak is at if its a hose then replace the hose but if its somewhere you cant locate try bar's leak or alumaseal found at and parts store

More than likely you've got a leak somewhere in the head gasket or the block. Probably more expensive to fix than the car is worth, especially if the leak is in the block. Check the coolant level frequently and carry a gallon of coolant. Drain the oil and refill frequently cuz coolant in the oil pan is a bad thing.

why does the coolant only leak when engine is off on my 1999 grand am?

A coolant leak on a 93 cavalier could be anyplace where coolant flows. Check all hoses, connections, the radiator, and heater core for any possible leak spots.

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