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  #1  
Old 04-25-2009, 09:54 AM
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Noob Coolant Reservoir Question

Hello all - I am hoping you can help. I bought a 2003 4.4 X5 with 80K miles on it about a month ago.

I like the rig a lot but to my dismay after driving it a couple days my Low Coolant alert came on in the dash. I added coolant and it went away - only to come back a couple weeks later.

I don't see ANY leaks/wetness anywhere but I do see a great deal of white residue around the reservoir and I suspect that maybe it's going bad... I was hoping the guys that had seen this before can take a look at the pic and tell me if they'd seen it before and what to do - if I need a new reservoir, I'd appreciate any advice on where to pick one up that's not OEM (or maybe even used) so I don't get charged my firstborn.

Thanks in advance folks.

-Tim
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Old 04-25-2009, 10:03 AM
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:welcome: to Xoutpost!

I would get the expansion tank and a new radiator cap from here. And be careful with the plastic portion of the vent hose that goes around the top, they are easy to snap when they get older...
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Old 04-25-2009, 10:39 AM
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Hi Weasel! Thank you very much for your reply - and by that reply, I will assume that you suspect that the expansion tank and radiator cap are most likely the culprit in question?

Thank you,
Tim
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Old 04-25-2009, 10:47 AM
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Ordered! Thanks Weasel!

-T
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Old 04-25-2009, 04:57 PM
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And yes, those would appear to be the culprits.
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Examine what is said, not who speaks.

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Old 05-05-2009, 04:11 PM
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Thanks for the pointers folks - I replaced my tank and cap just now and road tested it - it seems to be holding steady (the low coolant light stayed extinguished).

I'll keep you all apprised - but I just wanted to write and say thanks!

-Tim
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Old 05-05-2009, 06:13 PM
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I just had to do the exact same repair at 78k - things tend to fail in these right around the same time mileage wise.
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Old 05-05-2009, 06:38 PM
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Recently I had the same problem at 100k miles. Repleced the reservoir, cap and the small pressure valve on the reservoir.
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Old 06-23-2009, 12:40 PM
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Wow, that picture looks like its from my X5; No need for me to post a new question as I have the exact issue at 79K. I will order a new reservoir.

It looks like a fairly straight forward job, but is there any tricks I should know about before taking this apart? (i.e. I don't want to break a clip or disconnect a hose at the wrong junction)
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