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I have a 2005 volvo xc90 t6 that is jerking when accelerating and in idle. It doesn't so it every time but is steadily increasing and began about 2 weeks ago. Check engine light will blink when on highway and trying to push through and accelerate while the jerking is going on.. I have to let up off the gas and then continue accelerating for It to stop. Is this most likely a spark plug problem?!

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  • 271 Answers

A blinking check engine light is the warning of an engine misfire that can cause damage to the catalytic converter. Check car by diagnostic tool and keep car well.

Posted on Oct 31, 2012

  • Andria Sinclair Feb 02, 2013

    It was a misfire, and we performed a tune-up with new spark plugs and all is well!

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Posted on Jan 02, 2017

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SOURCE: I have an 2002 Honda Odyssey. hesitates at 45-55mph

change fuel filter, check fuel flow and preasure.

Posted on Sep 28, 2009

  • 35 Answers

SOURCE: rough idle / varying oil pressure when accelerating

Ok not to keen on newer vehicles actually prefer the carburated ones, but oil pressure is supposed increase on your gauge when accelerating. If it wasn't going up before and just staying at 40 the needle might have been stuck. But idle should be 40 lbs and when you work the moter (reving or driving down the road) the guage should show an increase for every 1000 rpm above idle. Second if you can get a hand held scanner (bought mine off ebay for $30) check for any codes in your computer you will probably find that you either have a bank running wrong or some other sensor that needs to be changed. I'd go with getting my own scanner it saves alot of money and time, garages make their money here.

Posted on Jan 03, 2009

  • 5 Answers

SOURCE: Car hesitation

had a problem with a grand prix like that once, was the fuel filter, and injectors, all needed replaced, and it only had 89,000 miles.
Would check fuel filter first. Is it possible you got some bad gas??

Posted on Aug 01, 2008

StormStrikes
  • 104 Answers

SOURCE: "check engine light flashing"

The flashing check engine light is typical of a misfire issue. There are two things I would do to start with.

1. Take the vehicle to an auto parts store like Autozone and have them hook up their scan tool so that they can retrieve stored trouble codes. Even if the check engine light is not on, they should be able to retrieve recently stored codes.

2. Do a complete tune up. New plugs, new plug wires, new air filter, new fuel filter if it has not been done recently.

If the parts store pulls the codes and they cannot tell you what they mean, post them up here and I will see what I can dig up for you.

Posted on Jan 02, 2009

rafaelrs38
  • 12 Answers

SOURCE: 99 Toyota Corolla multiple misfire problem

This is what you need to do, change the plug wires, because if there is a bad wire you would definitely experiences sputter or a stutter, so do the plug wires and at the same time do the spark plugs, this should take care of your problem. if not let me know and i will give you the next step

Posted on Aug 11, 2009

Testimonial: "So far the car is working fine after I replaced the spark plugs and wires! Thanks so much!"

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