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LS400 coolant resevoir tank crack question

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Old 04-08-13, 07:49 PM   #1
daveskates
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Default LS400 coolant resevoir tank crack question

is this a common thing with LS400's? the one I'm looking at picking up this week the guy said it does have a small crack in it and he said driving long distances it gradually heats up. Also it has a fan shroud but it's only half of the shroud so will this also cause it to rise above normal operating temps?
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Old 04-08-13, 09:18 PM   #2
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Think i read once it was common on early models. Where is it leaking from? Mine did from the oring around the coolant level sensor. I replaced that and it was good but later the whole sensor failed. So that got replaced and it came with another o ring.
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Old 04-08-13, 09:26 PM   #3
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Think i read once it was common on early models. Where is it leaking from? Mine did from the oring around the coolant level sensor. I replaced that and it was good but later the whole sensor failed. So that got replaced and it came with another o ring.
that i don't know exactly but he did say there was a crack for sure and to becareful driving it long distances, I was probably going to go to pick-n-pull and pick up one if i can find another LS400 in the yard. Are they year specific or were they all made about the same?
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Old 04-09-13, 05:36 AM   #4
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Not sure what year you have but they differ some by generation.
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Old 04-09-13, 11:28 AM   #5
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Not sure what year you have but they differ some by generation.
i think it's an early 90's model i was going to pick it up possibly today
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Old 04-09-13, 07:10 PM   #6
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picked it up a few hours ago!
it's a 90' LS400 very nice I like it, ride isn't too bad although it feels like it needs shocks they're not too bad. Maybe an alignment and wheel balancing wouldn't hurt.
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Old 04-09-13, 07:22 PM   #7
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When I bought my 93, it was leaking around the top at the sensor. I went to the local u-pull it, and got one from a 91-92 model and it worked just fine. I think they tend to crack or leak around that spot often.
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Old 04-09-13, 07:28 PM   #8
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When I bought my 93, it was leaking around the top at the sensor. I went to the local u-pull it, and got one from a 91-92 model and it worked just fine. I think they tend to crack or leak around that spot often.

yep it's leaking right there! It couldn't have been that horrible b/c I was able to drive it home I did keep my eye on the gauge. I noticed on the highway it would raise once I had to really get on the gas but for the most part driving around the city it lowered. I don't want to risk it overheating so I won't drive it anymore until I find another resevoir that has no cracks in it.
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Old 04-09-13, 08:12 PM   #9
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Make sure it's a crack after it cools unscrew the level sensor and check the plastic. Might just be the o ring. Hope you have red coolant if not get it changed.
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Old 04-09-13, 08:18 PM   #10
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Make sure it's a crack after it cools unscrew the level sensor and check the plastic. Might just be the o ring. Hope you have red coolant if not get it changed.
it's definitely a crack i can see it running down the side of the level sender where the cap screws in. I'm hoping I can find one at the junkyard or do people sell them on here often? I wouldn't mind ordering one as well, whichever works

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Old 04-09-13, 09:25 PM   #11
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Check ebay too. I found two right now.

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Old 04-09-13, 09:52 PM   #12
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Check ebay too. I found two right now.
sweet! i didn't think to check ebay i'll do just that
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Old 05-05-13, 03:10 PM   #13
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can anyone link me to some? i just want to make sure I am getting the right one so I can start driving this thing around already
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Old 05-05-13, 08:41 PM   #14
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I was thinking you had done this by now. I did a search on ebay but only found two for that years. Was a part out and they didnt show the tank. Bunch of 95 and up ones for sale now.
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Old 05-06-13, 12:35 PM   #15
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I was thinking you had done this by now. I did a search on ebay but only found two for that years. Was a part out and they didnt show the tank. Bunch of 95 and up ones for sale now.
unfortunately I never have time i work 14hr days and have been working for 13+ days in a row haha I'd really like to find one soon so I can start driving it around more
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Old 05-06-13, 12:35 PM
 
 
 
 
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crack, full, ls400, overheating, resivoir

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