Question about 2006 Suzuki Forenza

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Riding rough, flashing drive light, takes 4k RPM's to get going

Hi, About 3 or 4 months ago my check engine light came on. My husband is a mechanic so he checked it for me. It said it was my gas cap. The check engine light has still been on but no problems. Within the last week I have begun to have major problems. While driving the car will basically kick out of gear and it will take up to 4000 RPM's to get it going. Also, the gears show up as digital near my where my mileage shows up and the drive light will flash with a line across it (as in No Drive). I have to pull over, put it in park and then back into drive. I took it back to my husband who ran the check again, this time it said it had multiple random misfires and there was a problem with the throttle position sensor. His boss basically said that I need a new throttle body because the sensors aren't sold separately for this car. We put that in and my husband just took it out for a drive. The car is continuing to have problems. Is there anything you can tell me that could help?

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  • Cweb913 May 22, 2009

    If anyone has this same problem, let it be known that it is now fixed. We found out it was the transmission range sensor that needs to be replaced. Costs about 45 bucks through the dealer and my husband is a mechanic so the labor was free. Now it's all fixed !



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  • Suzuki Master
  • 20,706 Answers

USA? answering for only here.
fixya computer brain now moves 2009 posts to 2017.
its a stinking Daewoo ,Suzuki mixed up car. why by
both companies what bankrupt here, why own either or mixed.
ok, gas cap fail is like 1,000,000,000 posts on world wide.
boring,,,, and my new car even now, says gas cap loose.,

seems you have both a transmission problem and engine.
those misfires are real.
your hubby failed to do a tune up. in last 10 years. oops..
spark plugs and filters>.at least?

The throttle body and sensors love to fail on this POS.

answer. well why are you not testing and scanning
to see what fails, WHILE it failing,
scanning after only catches, 10% of errors, real.>?
scan while failing. and win.

The car is continuing to have problems.
with whaT, NOW? SAY WHAT.

Posted on Mar 09, 2017


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Posted on Jan 02, 2017

  • 1036 Answers

SOURCE: Rough/Hesitating Acceloration


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

  • 16 Answers

SOURCE: Check engine light and it is slow in speeding up. Please help

revisa el auto creo que se te descompuso el passinggear
o ya en ultima estancia te combiene mejor cambiar el motor

Posted on Sep 02, 2008

SOURCE: Engine problems

Need to ask them what the code was?

Posted on Sep 24, 2008

  • 137 Answers


is this car still under warranty? if so take it back to the dealer and don't accept it as repaired till you drive it. sounds like the logic that controls the transmission is flipping out, sometimes they will tell you that it needs a reflash. what this amounts to is that the manufacturer put some not so great programming in the logic when they built the car but now they have a patch or fix that makes it work better but you have to pay them for their time to install the fix. ask them what they will charge you for the privilege and decide if it's worth it to you. there is a recorded technical service bulletin about harsh shifts for your car. well, actually there are two, the latest one a revision of the first. i would try to make this their problem, it really is. hope this helps.

Posted on May 28, 2009

  • 1 Answer

SOURCE: Issue after replacing the Transmission Range Sensor

I've talked to three different Suzuki Dealerships since mine just went out as well, and they have all told me that they have to reprogram the computer or it wouldn't be able to shift into the correct gear.

Posted on Sep 25, 2009

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