Hello,

I have a 01 V70 T5. Sometimes when I start the car in the morning it will idle rough for like 15 sec then idle fine. When the car is warm it will start just fine. When I started the car this morning it idle rough for like 15 sec but this time I had the driver side door open and I noticed a strong smell of gas from the tail pipe. I'm not really knowledgeable about fixing cars just some of the basics. If anyone has some Ideas to try or have a expert check please post your comments. Thank you for looking at my post.

 

These cars may need the new injectors put in and a throttle clean always helps. Have someone check your oil trap at the dealer, should be no charge.

 

Did you fix your issue? I am having the same issue.

 

I was having this problem for a while; would only idle rough first thing in the morning, when started cold; if I drove it around for a bit and started it later in the day, it'd be smooth as silk. Turned out to be the MAF sensor; it took me a while to come to this (correct) diagnosis, because I'd recently cleaned the MAF sensor using MAF cleaner, and just assumed that it would be in good order. I suspect that while MAF cleaner might be effective for moderately dirty MAF sensors, when the sensor has been really dirty for a long time, the sensitivity of the wiring in there becomes greatly diminished, such that no amount of cleaning can bring it back to life. BTW, I shopped around, and found that FCP Groton had the best price on '01 V70 MAF sensors, by a wide margin.

If it was your injectors, then you'd likely be having idle/misfire/surging issues all day long, not just first thing in the morning.

 

yes absolutely, bad fuel injector do this all the time not first start in morning because when they are clogged it's very difficult to clean it even with fuel product