Question about 1999 Volvo S70

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Ruff idle,no power

I have a 1999 s70 t5 and the car idle's up and down after it warms up.check engine light is on,has no [power when you step on the gas,put a new mass air flow sensor on,and had it to the dealer for some computer software update's but still have the problem.Can anybody help me.

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  • livelycraig Jan 11, 2009

    Thanks to the person that helped me i did replace me etm last week and the car is runnning smooth!!

    Thanks FixYa.

  • tabo0311 Feb 23, 2009

    i have ruff idle,no power and lots of black smoke out of the exhaust

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It sounds like this problems is related to the ETM, or electronic throttle module. if software download was already performed, next step is to clean the throttle body bore. ultimately, the module may need to be replaced.

Posted on Jan 09, 2009

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2 Answers

Why would my 1998 s70 suddenly decellarate from 75 mi p/hr on interstate to 0.what could be the cause, no engine noises or smoking


Did the engine stall or did it just lose power but stay running? Did the gauges fall to "0" or idle?

Usually when something major like that happens, the check engine light will come on and there will be codes set in the computer.

I would start by checking the codes, and if at all possible, use Volvo's VIDA and DiCE interface to make sure you get the right codes. Some generic code readers can't read all the Volvo specific stuff.

That will get you closer to the actual problem.

Rule out the simple stuff. Do you have enough gas in the tank? The gas gauge might be wrong and you're empty. The ETM could be wonky and on its way out. Google "Volvo ETM" and read up - there's a sticker on it and the color of the sticker could indicate if you have the old (likely faulty) module or not.

Ignition wires - these engines are coil on plug if I remember right (they changed around those years '98 or '99) and then you check the little wires to the coils.

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http://repairpal.com/volvo-s70-1999

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