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850 / S70 & V70 '96-'99 / C70 '97-'05 General Forum for the 850 and P80-platform 70-series models |
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Engine management lightViews : 345 Replies : 2Users Viewing This Thread : |
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Aug 4th, 2022, 11:43 | #1 |
New Member
Last Online: Apr 22nd, 2024 20:03
Join Date: Mar 2015
Location: havant
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Engine management light
Hi , following a rebuild after the cambelt snapped on my R reg TDI the engine management light has been on . I ve scanned with an OBD2 with no success . Just wondering if anyone has any ideas or experience with similar. many thanks.
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Aug 4th, 2022, 18:08 | #2 |
Premier Member
Last Online: Yesterday 14:56
Join Date: Dec 2002
Location: Co. Limerick, Ireland
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Have you carried out the dynamic timing?
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Liam... '96 854 TDI SE, '99 V70 2.5D S, '05 C70 2.0T Collection, '05 S80 2.0T SE, '15 V70 D4 SE Lux Nav. |
Aug 4th, 2022, 22:08 | #3 |
VOC Member
Last Online: Apr 24th, 2024 09:24
Join Date: Dec 2001
Location: Hull
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Almost certainly a dynamic timing error. The timing is usually adjusted with the aid of software but it can be set with with a dial gauge. Fine adjustments are made by moving the tensioner and idler pulleys on the injection pump belt which allows an adjustment of about +/- 2 to 3 degrees; a total range of 4 to 6 degrees.
A 1998 Tdi is not fully OBD compliant and most generic code readers won't work. So far as I recall, it will have the MSA15.7 ECU and the preferred software is VOL-FCR However if you have an android phone and a good ELM327 dongle the 850OBD2 app from Xiaotec will allow you to measure and hence adjust the dynamic timing. It's what I use myself. It has a few quirks but it will also read the TCM, SRS and ABS modules and perform tests. Hope this is of some help. Martin 1998 V70 Tdi auto |
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