Coolant Leak Advice Needed - Defender Source
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  #1  
Old September 14th, 2012, 11:44 PM
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Jesse Hardin
Past: '97 D90 LE #135
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Coolant Leak Advice Needed

Have a new issue that I found today. I have a 97 LE. I was checking the coolant level and noticed the coolant level in the coolant reservoir was way low, almost empty (I could see the drain in the bottom). I added 3 quarts of water and turned the truck over to idle for a while. When I did, the truck ran fine, but I noticed about 5 minutes in a pretty big water leak under the truck. I turned the truck off and let it set before rechecking the level in the reservoir. After rechecking, the level was still good, but it did look somewhat lower than when I had just filled it. After checking the lines from the reservoir and from the radiator, I couldn't find any leaking fluid.

Do any of you have any ideas about where this leak could be coming from? Any recommendations are greatly appreciated.
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  #2  
Old September 15th, 2012, 12:03 AM
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Ethan
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Where under the truck is it pooling? Is it coming down the front of the engine? If so, it's probably either your water pump, or a timing cover leak (less likely). If you suspect the water pump, pull the belt of and wiggle the fan. If it wiggles (front to back), your water pump needs to be replaced.
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Old September 15th, 2012, 12:08 AM
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Jesse Hardin
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Water was on the passengers side of the truck in front of and behind the front axle. I suspect it might be the water pump simply for the fact it hasn't been replaced to my knowledge. My biggest concern is I don't know how long this has been this way so I don't know if I've driven the truck without coolant. I've had a few situations where I thought the truck was running hotter than normal, but it was also in the middle of the Texas summer and was my first summer owning it.
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Previous Rovers:
1997 LR D90 LE - #135
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2000 LR Discovery SII (Oxford Blue)
2008 LR LR3 HSE (Alaska White)
2012 LR LR4 Lux (Fuji White)
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  #4  
Old September 15th, 2012, 04:06 AM
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Reese
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Did you have the a/c running? It might have been condensation coming fro the drip line. Should be right at the passenger footwell. Does you aux fan kick on in front of the radiator? Mine had a short and wasn't and made my engine temp run hot when in stop and go traffic.
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Old September 15th, 2012, 10:57 AM
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Jason England
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yeah ... the water likely came out from the coolant tank overflow ... there is a pipe that runs down the inner wing and ejects water if there is too much pressure in the system.

You need to do some checks ... excessive system pressure can be caused by a head gasket leak. You need a leak check done. It's also worth having a pressure test done to see if there are any leaks that only appear under pressure.

Overheating is also caused by head gasket leak ... my truck would cool ok most of the time but getting stuck in traffic or when it was really hot it would start to run hot.



Running AC puts extra load on the engine and makes the symptoms worse.

Water pump leaks are at the front of the engine, so i doubt this was the problem.
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  #6  
Old September 15th, 2012, 07:22 PM
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Jesse Hardin
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Thanks guys, Reese, I know I didn't have the AC running at the time, but I have noticed the overheating I perceived always occurred when the AC was on. I'm taking it in this week to have it looked at. Will see what the diagnosis is. Hopefully it's not anything too serious.
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Current Stable:
2016 BMW M3 (Mineral Grey)
2013 Ford Raptor (Tuxedo Black)

Previous Rovers:
1997 LR D90 LE - #135
1997 LR D90 ST - #1185 (BRG)
2000 LR Discovery SII (Oxford Blue)
2008 LR LR3 HSE (Alaska White)
2012 LR LR4 Lux (Fuji White)
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