Question about 2004 Suzuki Forenza

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Rough/Hesitating Acceloration lately when I hit the gas from a stop the car hesitates bad and takes a few seconds to finally kick in. It also boggs pretty bad when it downshifts going up a hill sometimes, or even just on flat roads as well. The engine light ocassionaly flashes, and i checked it last week and it said Fuel Sensor Level B High input. I am thinking either bad fuel filter or fuel pump, but i am far from being an expert. Thanks for the help.

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  • tjara03 Jun 27, 2008

    Thanks for the great info! after checking some things out, we found out it was a bad spark plug wire. go figure, the car only has 64000 miles on it. Thanks again!

  • DA YAH Jul 23, 2008

    I FIGURED IT WAS MY SPARK PLUGS THAT NEEDED TO BE CHANGED OUT WHEN THE HESITATION STARTED. I HAVEN'T HAD A TUNE UP IN OVER A YEAR. SO, I'M LOOKING AT THAT AS BEING THE "CURE ALL" FOR MY CAR (SAME SYMPTOMS). THE ONLY PROLBEM I'M HAVING RIGHT NOW IS THAT THE SPARK PLUG SECTION OF THE CAR HAS A BRACKET OVER IT THAT CONNECTS TO A LOT OF THINGS. SHOULD I TRY TO CHANGE IT MYSELF? I'VE NORMALLY DONE IT MYSELF WITH ANY OTHER CAR I'VE HAD BUT THIS EXTRA BRACKET IS NEW TO ME! LOL



    THANKS!

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Hi,

Yes it does sound like a fueling issue, but could also be vacuum sensor or airflow sensor.

If you haven't replaced the fuel filter in 3 years, then it may be about time you did. It is also one of the least expencive parts, and even a DIY job if access is possible, but you have to depressurise the fuel line before changing.

You can test the output of the fuel pump through the filter with a little care and a short length of pipe into a fuel can. It can as you say be a faulty fuel pump - but you will only know by testing it.

Posted on Jun 25, 2008

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