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Volvo service... new throttle body or ETM?

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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gmh
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Re: Volvo service... new throttle body or ETM?

Post by gmh »

OK. So you have the bouncing idle indicative of a faulty ETM, a part that Volvo has warranted for 10 years or 200,000 miles because so many have failed, but maybe it is not the ETM at fault? It is possible that there are other problems, but I am convinced by the evidence presented in numerous threads in the Don's ETM Room Forum and elsewhere that the inevitable conclusion is all Volvo ETM's of this type (Magnetti-Marelli installed in various cars 1999-2002) will eventually fail due to a design flaw, often in less than 50,000 miles.

By the way, the timing belt has nothing to do with this and disconnecting the battery will not clear codes. You can have codes read by many auto parts stores rather than paying the dealer to do it. If you post the codes here, someone will tell you what they mean or you can also find a table like this https://www.matthewsvolvosite.com/volvo- ... ble-codes/ to decipher them.
Gary

1969 145S (1987-91)
1973 145E (1989-90)
1981 245 (1990-2001)
1981 244 (1991-2002)
1989 760 Turbo Wagon (1999-2011)
1994 850 Turbo Wagon (2002-2013) burnt valve
2001 V70 2.4T (2009-2017) sold
1997 850 R Wagon (2013-2025) sold to Matthew
2014 XC60 T6 (2017-present)
2016 XC60 T5 (2024-present)

mikealder
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Post by mikealder »

papasven wrote:As I look through this thread there is a nice diagram and tips on how to clean the ETM . Just as I found a video on another thread of how to clean it. However, nothing under my hood is familiar in that diagram or the video. I believe that the item with the yellow sticker is the ETM or damn close to it. The fans and hoses involved make it barely visible let alone workable.
The diagram on the previous page is for the non turbo model which is really easy to get at the ETM, the Turbo models are somewhat more difficult being burried under the inlet manifold - Mike

papasven
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Post by papasven »

mikealder wrote:
papasven wrote:As I look through this thread there is a nice diagram and tips on how to clean the ETM . Just as I found a video on another thread of how to clean it. However, nothing under my hood is familiar in that diagram or the video. I believe that the item with the yellow sticker is the ETM or damn close to it. The fans and hoses involved make it barely visible let alone workable.
The diagram on the previous page is for the non turbo model which is really easy to get at the ETM, the Turbo models are somewhat more difficult being burried under the inlet manifold - Mike
My IS buried in the under the middle of the intake manifold and it is not a turbo. I have been under the impression that the ETM was to be pulled forward. Perhaps I am mistaken, and it is to be pulled towards the battery for cleaning? It definitely sits back in the middle of a tunnel.

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