Finally happened to me on hot/humid day on drive to work: Limp mode which went away after car cooled off for drive home. Pretty sure it's the 2001-2204 CEM overheat issue and want to do the chip heatsink and shield removal. I think the size for the big chip is 22mm as mentioned in posts, but what is the size for the flash chip others have mentioned but didn't see a size for it. Want to do both while I'm in there. Might even put in the box fan for good measure since it's already exhibited problems.
Thanks for the great inputs!
J.D.
What size heatsinks do I need for CEM?
- volvolugnut
- Posts: 1657
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- Year and Model: 2001 V70
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Did you get codes when went into Limp mode? I have been having limp mode on hot days on 2001 V70, have not heard that 2001 models had known CEM over heat issues. My codes indicate a problem with Canbus signal to ETM.
2001 V70 T5, 1986 244DL, 1983 245DL, 1975 245DL, 1959 PV544, multiple parts cars.
- volvolugnut
- Posts: 1657
- Joined: Sun Jan 19, 2014 9:51 am
- Year and Model: 2001 V70
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For heat sink size and details see:
https://www.volvoxc.com/forums/showthre ... 04-CEM-CPU
Lots of info here on what and where to buy.
For my situation, after many times of hot start failures and limp mode, I will be getting Xemodex to remanufacture my CEM. Today it failed to idle without surging after cooling over night at CEM temperature of only 74F. I removed the CEM this morning and contacted Xemodex.
volvolugnut
https://www.volvoxc.com/forums/showthre ... 04-CEM-CPU
Lots of info here on what and where to buy.
For my situation, after many times of hot start failures and limp mode, I will be getting Xemodex to remanufacture my CEM. Today it failed to idle without surging after cooling over night at CEM temperature of only 74F. I removed the CEM this morning and contacted Xemodex.
volvolugnut
2001 V70 T5, 1986 244DL, 1983 245DL, 1975 245DL, 1959 PV544, multiple parts cars.
- abscate
- MVS Moderator
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- Year and Model: 99T5 ,99S70,2005V70
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Thanks for digging up that’s post, lugnut
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary
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