2001 V70 rough idle, surging engine, no power.

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive P2 platform cars sold as model years 2001-2007 (North American market year designations).

2001 - 2007 V70
2001 - 2004 V70 XC (Cross Country)
2004 - 2007 XC70 (Cross Country)
2001 - 2009 S60
2003 - 2007 S60 R
2004 - 2007 V70 R

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RickHaleParker  
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Re: 2001 V70 rough idle, surging engine, no power.

Post by RickHaleParker »

It would help if you break things up into paragraphs and format list as list.

I suggested putting off cutting the harness and swamping the ETM for a reason but oh well.

The whole engine is in unknown condition. It going to take patience to sort things out. This is not out of the ordinary after an engine swap.

Clear all the DTC codes, see what comes back. Sometimes one code will disable diagnostics on other systems. Come to think of it, we cannot be sure the codes are from the old engine condition or the new engine condition. Perhaps the ODB is confused by the engine swap.
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abscate
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Post by abscate »

Ok, hood up , turn key to pos II

You should hear a click followed by an 8 second Whine which then stops.

If you don't, your ETM software is wrong and it won't run. except for limp mode
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Post by gmabbott »

Thanks for the response DrDan. From what I have been told on forums the codes are related to the ETM. We have cleared those codes but it doesn't seem to make any difference. I am trying to get my hands on a Vida Dice so we can get a better look at the ECM and figure out what is going on.

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Post by gmabbott »

RickHaleParker wrote: Fri Jan 26, 2018 12:17 am
Clear all the DTC codes, see what comes back. Sometimes one code will disable diagnostics on other systems. Come to think of it, we cannot be sure the codes are from the old engine condition or the new engine condition. Perhaps the ODB is confused by the engine swap.
Thanks RickHaleParker. That is an interesting thought about the computer and the swap. Can those codes be cleared with an OBDII scanner or do I need a VIDA DICE? I am currently trying to get my hands on one.

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Post by gmabbott »

abscate wrote: Fri Jan 26, 2018 2:41 am Ok, hood up , turn key to pos II

You should hear a click followed by an 8 second Whine which then stops.

If you don't, your ETM software is wrong and it won't run. except for limp mode
Thanks for the info abscate. I will try that and let you know what I find.

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Post by gmabbott »

Update: I reinstalled the original ETM and purchased a VIDA DICE 2014D. Initially it pulled 24 codes. We reset them and ran the program again. I've attached a picture of the screen with the codes that came back. The 1st three are the ones that I believe are causing the issues with the engine surging.
1. CEM-1A5D Communication with ETM control module Signal missing
2. CEM-DF13 CAN-H, high speed network
3. CEM-DF16 CAN-L, high speed network
All three said that they could cause performance problems, loss of power, surging, etc. They also indicated that they are 'permanent' faults. When I first ran the program the ETM was greyed out on the display. It then changed to green after I cleared the codes the first time. I'm wondering if there is another step to reset 'permanent fault' codes? I still think these codes are putting the car into limp mode. Any thoughts?
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Post by abscate »

Fix that 11.9 V battery voltage before you do anything else
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