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99 C70 ETM problems?

Do you have a failing Electronic Throttle Module? What steps to take if you do, plus the latest ETM news. Volvo 1999-2002 models only please.
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MaxIcon
Posts: 20
Joined: 6 April 2010
Year and Model: 1998 V90
Location: Silicon Valley

99 C70 ETM problems?

Post by MaxIcon »

My 99 C70 LPT (93k, just out of 10 year warranty) recently started having serious hesitation during acceleration. It's OK at idle, and OK if you floor it, but mid-range acceleration shows lots of hesitation. No error codes have shown up.

I got the ETM cleaned during a timing belt change, and it's better, but the hesitation still comes and goes.

Is the C70 covered by the XeMODeX rebuild? An earlier thread said no, but dunno if that's changed.
ETA: Never mind on this one, I just found their web site and will shoot out an email.

Is there anything else I should check before swapping the ETM?

Finally, is there a thread showing some pics of the ETM swap procedure? I'm pretty good mechanically, but don't like to dive in too deep. This looks like a pain to get out, but everyone says it's pretty easy.

Thanks for any assistance!

fast850
Posts: 42
Joined: 27 March 2010
Year and Model: 850 1996
Location: FL

Post by fast850 »

Clean it again and make sure it's right this time. Problem is the person you hired to clean it doesn't understand how sensitive it is to being really clean. See this (yours might have the stiff wipers like the ones in the link posted though)

https://www.matthewsvolvosite.com/forums ... 12&t=29885

and this

http://volvoforums.com/forum/showthread ... ght=xmodex
96 850 turbo Platinum wagon
96 850 NA wagon
98 V70 NA
01 V70 NA

JsinnC70
Posts: 13
Joined: 13 August 2011
Year and Model: c70 1999
Location: Cashville

Post by JsinnC70 »

Sounds like your ETM failing. Right on time too @ 90000. Although it sounds like its just beginning. I just reached 182000 and my second etm just failed. When you replace it you should replace your MAF as well.

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