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MacBook Pro overheating after replacing battery

Hello everyone,

I bought a replacement battery from iFixit about a year and a half ago, and ever since have been experiencing random shut downs. It goes like this: I’ll be using my laptop, then the screen will freeze, the fans will kick in overtime, and then the entire computer will just shut down. Upon starting up, TG Pro (a fan controlling, temperature reading app) will sometimes tell me that there’s a problem with the battery, and at other times it will say there’s a problem with the RAM.

I think the problem fundamentally is that the computer is overheating, but I can’t say I run anything that demanding. Sometimes I run only a couple of apps, and it still happens. I even formatted and reinstalled the entire operating system + apps in case it was some kind of kernel panic loop. What’s weird is that I didn’t experience any of these issues prior to the initial battery replacement.

I have already replaced the battery TWICE, and have received another replacement in the mail recently. I plan to do it a third time. My computer continues to tell me my battery needs to be serviced.

Attached is my CoconutBattery readout. Please help – I have no idea what to do. I was considering replacing the thermal paste on the CPU as I heard it can wear out overtime. Not sure how true this is, but has anyone else experienced these issues?

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Update (08/01/2022)

Also – could the issue be as simple as replacing the thermal paste? The heat sink LOOKS okay, but I know that's not a guarantee that the liquid inside it hasn't evaporated.

Update (08/04/2022)

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@danj Here is a more recent screenshot! Still trying to figure out whether the numbers are better or not.

Update (08/13/2022)

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These are my updated numbers after changing out the heat sink and re-applying the thermal paste. I don't know – looks kind of the same as before.

Update (08/23/2022)

Attached is a TG Pro and coconutBattery screenshots of my system.

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Update (08/25/2022)

Today I replaced my battery. Attached are the TG Pro (which numbers I initially reset) and coconutBattery screenshots.

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Can you post a snapshot of TG Pro as your systems fans are running hard (letting the system to control the fan not TG Pro).

da

@danj Can do! Posted is my current temperatures, allowing the system to controls the fan, not TG Pro.

da

@maksymprykhodko - You'll need to zero the high water marks as you still have the old ones. Even still the values look good presently. I prefer using the high water marks as you rarely capture the high point within a single snapshot.

da

@danj Sorry for the delay on this. Should I reset the high marks, then use the computer for a bit, and THEN post a screenshot? Or should I upload what it looks like immediately after the reset?

da

@maksymprykhodko - Yes reset - Use - Take not on what was running at the time point of failure (you might even look at Activity Monitor) and post a fresh snapshot.

da

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Well, you do need a new battery again! You do run the system hard as we can see the high water marks are higher than 90℃

Your workflow maybe more than what your system can handle, its also possible the high heat is cooking your battery besides your systems logic.

I would make sure the fan blades and the heatsink fins are clean, I do see a sizable delta between your CPU’s and the two heat sink proximity sensors as well as the airflow sensor (high water marks) so its clear your system is not effectively cooling! Is the issue really a heat pipe failure or just needing cleaning?

I would look along the heat pipe from the CPU/GPUs and the heat sink fin areas do you see any discoloration on the logic board near it as well as see white powder deposits along the pipes that would imply the heat sink has failed. As well as see how much junk is lodged in the blades and fin areas.

Update (08/01/2022)

Here's the difference!

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Thanks for your answer!

The thing is that I don't think I push my laptop that hard. I do have a decent amount of tabs in Firefox, but nothing that is that insanely demanding. I find the computer has a hard time working even at a moderate intensity.

Wow – I never thought of that. How does the heat cook the battery?

So I have de-dusted my laptop not too long ago actually, but I'll take a closer look next time I replace the battery and let you know if I see any discoloration or white powder deposits. I need to find a little vacuum dust-blower online first. If the heat sink has atrophied, what can I do about that?

da

@maksymprykhodko - Hold off on any vacuum as they can damage your system with static electricity! All I use is a small soft paint brush (1/2" or so) using it to scrub the surfaces being very careful not to snag it on anything, once the dirt is loose I just use a can of can'ed air (compressed air) with short blasts to push the junk away.

If you've already cleaned your system then the signs of a leaking heat tube are likely gone by now. Best to just get a new heat sink and compare the weights at the milligram level I think you'll find yours is lighter as the fluid has now leaked out.

Be careful with the paste! quite often I encounter overloaded systems people just can't believe it takes so little for the job. To give you some perspective take a single sheet of TP cut it into the size of the chip and then wet it rolling it into a tight ball even that is too much!

Firefox or Chrome use a lot of resources when you have a lot of tabs open. Review your drives space as a system with little free space can also overheat! Here the OS is working extra hard trying to move things around as the little free space gets over worn so it needs to shuttle stuff which is not being access to more worn space so that space can be used. We call this wear leveling, its a good thing but it get get out of hand when you don't have much free space. You should leave 1/4 of you drive vacant (500 GB and bigger) and 1/3 for the smaller drives.

da

@danj Thanks so much for your response. I know I'm many months late in my reply. I'm going to pick up the Integrated Graphics heat sink and replace it, then test to see if the computer still overheats. If my MacBook handles heat better, I'll replace the battery for the third time.

MacBook Pro 15" Retina (Late 2013-Mid 2014, Integrated Graphics) Heat Sink

Whoops! Pasted in the wrong link. THIS is the correct heat sink for this model.

MacBook Pro 15" Retina (Late 2013-Mid 2015, Dual Graphics) Heat Sink

da

@maksymprykhodko Ah! Which one is the correct one?? It depends on which system you have! If you are running Mojave or newer the About this Mac will tell you if you have a dual graphics system or just the intergraded version system. Look at the image I posted in my answer to see what I mean. Then you know which you need.

da

@danj UPDATE: today I got the replacement kit for the heat sink. I looked through a few YouTube tutorials as well as the iFixit guide. I didn't have a thermal pad, so I began with isopropyl alcohol and qtips then worked up to the first solution combined with microfiber, then the second solution combined with a microfiber cloth. I tried to leave the surfaces as streak-free and spotless as possible. I mayyy have added a touch too much thermal paste, but I don't think I grossly overdid it. I tried to be as in-between conservative/generous as I could.

I'm typing this right now on the laptop. I can't tell whether the temperature has improved yet. Before, the average temperature was about 60 degrees Celcius, and now it has been hovering in the low 50's. I can't be sure this is due to the the new heat sink + thermal paste though. I read on Artic Silver's website that it can take up to 200 hours for the thermal paste to full set in.

Another thing. I weighed the previous heat sink as well as the new one, and they both weighed an even 33 grams. I weighed each one numerous times just to be sure. Note: I had not cleaned off the thermal paste off the old heat sink, so could the weight be slightly off?

I'm beginning to wonder whether the heat sink was an issue at all. Could there be other hardware factors that cause the MacBook to just sometimes go black, overheat, then suddenly turn off? Could RAM be a problem, or something else entirely? I have a feeling if it's not the heat sink, that I'll have to start slowly replacing all parts of my laptop just to isolate the issue. Once again, a tremendous thanks for all of your help.

da

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Maksym Prykhodko sarà eternamente grato.
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