Question about 2003 Jeep Wrangler

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Overheated replaced radiator now leak oil and

2002 6cly wrangler overheated replaced radiator now leaks oil and lacks power

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There isn't much you could have done incorrectly by changing the radiator to cause the problems you have now. Therefore, I'm guessing that you badly overheated the engine. When that happens, engine seals become brittle and loose their ability to seal which results in oil leaks. High temperatures can cause the compression rings on the pistons to relax, in which case you are now loosing compression which not only causes performance loss but will also pressurize the inside of the engine and cause leaks.. Extreme heating can also allow your timing chain to stretch a bit, also causing performance problems.
If you have already checked the condition of the ignition system to make sure there is no arcing and spark loss, I'd do a compression and or cylinder leak-down test to check the internal condition of the engine.
If everything turns out to be OK inside, then treat this like any other performance problem and test all sensors, run a code test and make sure the air filter is clean and the converter is flowing well. As for oil leaks, Replace seals or gaskets that are leaking.

Posted on Jul 08, 2010

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I have a 89 pontiac firebird Trans Am "GTA" 5.7L tuned port injected. My engine gets hot somehow and my car has a quick start but lower power afterward. What could the problem be?


Fix the radiator cooling problems. You will damage the engine if you keep running the car in an overheated condition.

1. Replace the thermostat in the cooling system
2. Replace the water pump
3. Flush the cooling system thoroughly and re-fill with the correct coolant. Bleed any air out of the system otherwise you will have problems with air blockages and thus poor coolant flow.

You probably do not know how to do any of this so take it to a reputable workshop or cooling specialist to have it done.

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Kia Carens overheating


see this causes and remedies, you can have overheating by internal leak or external leak:
1) transmission oil cooler is leaking , 2) loose cylinder head gasket 3) engine block cracke 4) cracked cylinder head or engine block bore 50 oirl cooler is (inside radiator) is cracker.

2) external: a) leak at the hose connection b) water pump c) core plugsd) thermostat housing e) cilynder head.f) gasket cylinder head.

God bless you

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Car overheating


First confirm that the engine IS actually overheating - steam, no heat to the interior etc. Sometimes a temperature sensor will fail and give a misleading 'overheat' reading on gauge. For that matter sometimes the gauge can fail and give the same misleading reading. Check that the cooling fan comes on when the engine temperature starts to rise above 'normal'. If not check (in order) fan fuse, fan relay, fan sensor, fan. Real overheating is caused by a lack of coolant AND/OR lack of coolant flow. Modern cooling systems are 'closed'. In other words there should be little or no loss of coolant. If the level is significantly low you have a leak....either external or internal. With the coolant topped up to the correct level and the radiator cap on, run the engine and look for visible leaks...hoses, valves, radiator etc. Internal leaks, eg. head gasket will usually be accompanied by white exhaust smoke (steam), hard starting, rough running and bubbles in the expansion tank. Sometimes, though NOT always, you will find the engine oil has a milky look and/or engine oil will be mixed in with the coolant.

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My s 430 has smoke coming from under hood after driving but not all the time temp gauage reads normal. I had oil and trans leaks sealed but it is still happening, what else could it be? Thanks


SMOKE UNDER HOOD COULD BE COOLANT LEAK FROM RADIATOR ITSELF OR CHECK FOR LEAKING TOP RADIATOR HOSE AND CHECK FOR LEAKING BOTTOM RADIATOR HOSE.LOOK UNDER THE HOOD IF COOLANT BOILING OUT COOLANT OVERFLOW JUG ENGINE OVERHEATING FROM BAD THERMOSTAT OR BAD WATER PUMP.CHECK FOR COOLANT LEAK AT WATER PUMP WEEP HOLE.IF SO WATER PUMP NEED REPLACING.ADD MORE COOLANT UNTIL LEVEL CORRECT.TRY LOCATE LEAK. IF CAR OVERHEATED AND BOILED IT OUT. SMOKE UNDER THE HOOD CAN ALSO BE CAUSED BY LEAKING VALVE COVERS WHICH CAN BE FIRE HAZARD IF OIL LEAKS ON HOT EXHAUST MANIFOLD.

Mar 21, 2011 | 2002 Mercedes-Benz S-Class

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My 91 jeep wrangler has a good steady flow from the water pump and the other day the pipe that goes to the bottom radiator to the pump shot off and leaked out coolant everywere is it the pump it always...


If the pump isn't leaking or noisy, it's good. If the hose came off and the engine overheated you may have blown a head gasket (radiator hydrocarbon test is best to determine that) if you see steam from the tailpipe, coolant in the engine oil or oil in the coolant that also is a big clue.
Jeep engines tend to rust internally. the rust packs into the bottom of radiator core, especially after an overheat. Therefore, don't trust that because the radiator looks good that it is good you cannot see what's actually inside it. (you could try back-flushing but should do that with the radiator removed to do it right). If you see any improvement after flushing, replacement would be a good idea.(unless it completely works). You can use plain water in the cooling system while testing. Just don't leave the water overnight so it can freeze.

Feb 22, 2011 | Jeep Wrangler Cars & Trucks

1 Answer

Overheating, not when sitting. bottom hose


I hate to say this but it could be going straight into the engine, if it's not leaking or doing back into the overflow/rad..

Note I've included the instructions/info about knowing if your head gasket is blown (which could be causing the antifreeze to leak into the engine) This should help you out a bit diagnosing the problem.

1. Exhaust: When you have a gasket leak, you will notice white smoke coming out of your tailpipe. Sometimes drops of water will drop from the end of the tailpipe. The exhaust will also have a sweet smell to it.


2. Spark Plugs: Your spark plugs will display one of the last signs of a blown head gasket. If you have green dyed coolant in your system, the spark plugs will have a green tint around them. If the problem is very severe, the coolant may start squirting out of the plug holes which is not good.


3. Oil: You will notice a milky type ring surrounding your oil cap. This is caused by coolant entering the engine oil through the leaking gasket. This mixture leaves the milky type ring around the oil cap when it evaporates. You can check for this by taking the car for a short drive, then checking the oil for contamination.


4. Engine: Lack of engine power is a sign of a blown head gasket. The engine will lack power due to compression loss. The engine will also run poorly and will idle roughly. You should also be careful because the engine will overheat quickly when you have a blown head gasket.


5. Bubbles: A gasket leak will cause bubbles of air to come into your radiator. To check for this, you should first remove the radiator cap then warm up the engine. When you rev the engine, you will see bubbles come out from the top of the radiator.


Hope this helps, best regards, Happy Holidays!

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Head gasket


Typical symptoms of a blown headgasket may include: -bubbles of air coming up into your radiator (remove cap before starting) -leaking radiator -milkshake colored oil -overheating -rough running -coolant or oil running from head -spark plug(s) that have a green tint (if green coolant). -white colored or sweet smelling exhaust, white smoke of your tail pipe, or loosing coolant through your overflow

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Overheating 97 V6 pontiac grand am


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95 jeep wrangler overheating and hissing sound


Had the same problem on my 95 Wrangler within the last month. I was told that the radiators on Wranglers tend to wear out, and don't push fluid through after 10 years or so. I decided to 'fix' everything at the same time. I replaced the radiator, the radiator hoses, and the water pump. That stopped the leaking, and fixed the problem. Water pumps run less than $50, and is actually something you can do yourself. I'm not mechanically inclined, but I needed to save the labor charges from the mechanic, so I took at shot. I had no problems. It does help to have an extra pair of hands to replace the serpentine belt.

Jul 25, 2008 | 1995 Jeep Wrangler

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