Question about 1998 Volvo S70

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Car is a s70 t5 1998 volvo has a misfire after its warm up at idle and somtimes while driving

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Possible bad coil...download ecm codes to see

Posted on Dec 18, 2016

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1 Answer

What is settin the po300 random multiple misfire/?


you have a bed coil (s). That's what causes misfire. Your DIC should be specific about which cylinder coil you're having trouble with.

Apr 28, 2014 | Volvo S80 Cars & Trucks

1 Answer

2000 Volvo S70 Starts then dies. Seems to do it more often if the engine is warm. Wait 10 minutes and it starts and runs fine.


Fuel pumps are common on these cars. Its a hard fault to duplicate with a gauge because they rarely die at idle! I would still connect a gauge and see pressures though, see what happens to them when it starts to die (if it will at idle). 99/100 times you need to replace the fuel pump, and fuel pump relay. The relay overexcites and burns out your fuel pump. As long as you dont have AWD its not a difficult job, if its AWD then you have to lower the whole back end of the car (springs, diff, AOC....) to lower the tank enough to get to the pump. Make sure that you align the pump correctly or you will have a false fuel level reading.

Dec 15, 2010 | 2000 Volvo S70

2 Answers

My 1998 volvo s70 go died when idle at stop i


I'm having the same problem. At first I thought it was bad fuel so I replaced the fuel filter to no avail. Then I cleaned the Mass Air Flow sensor which also didn't work. Is your check engine light on?

Jul 26, 2010 | 1998 Volvo S70

1 Answer

I have a random misfire


I would first replace all of the Spark Plugs first and put some STP Super Concentrated Fuel Injector Cleaner in your gas tank and drive it arounf for awhile and see how your car responds.

Jun 05, 2010 | 2000 Volvo S70

1 Answer

I have 5 codes on my 98 s70 volvo. the codes are p0305,p0303,p0301,p0300, and p017. Needing suggestion on what I need to do in order to have this fixed. Thanks.


Try replacing the spark plugs and I HIGHLY recommend factory plugs, they run way better and last way longer. From LOTS of personal experience. Plugs are the most common cause of misfires in a Volvo

Aug 10, 2009 | 1998 Volvo S70

1 Answer

Ruff idle,no power


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.

Jan 07, 2009 | 1999 Volvo S70

1 Answer

1999 Volvo S70 Stalls at stop signs and traffic lights


These models had a problem with the electronic control modules, and this is what controls the idle speed. Sometimes they just need to be cleaned, but sometimes they are defective. Volvo has extended the warranty on some of them to 10 years or 200,000 miles if it is found to be defective.

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

Jan 05, 2009 | 2000 Volvo S70

1 Answer

Suspect transmission problem


How long since the fluid was replaced?

Jul 11, 2008 | 1998 Volvo S70

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