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Old 08-06-2016, 06:14 PM   #1 (permalink)
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Unhappy Suzuki Forenza Gear shifting problem- Help!-Detailed story :)

Hello there!

I have an Automatic Suzuki Forenza 2005 with a millage of 95,676.

Drove the car for about a minimium of 3hrs with about 2 short stops in between, when on the Highway the car
starts shaking when I reached 65 m.p.h but I ignored that and kept going. When I finnally get home everything
looked and sounded okay.


The next day when I turned the car on, I noticed the engine light was on. I tried to change gear
(after releasing the emergency of course) and the lever was really stiff, when I finally get to change it to drive, or from N to R,
it made a horrible clunking/cracking sound and the car moved back and forth harshly (shaked) without stepping on the gas.

*****The link to the video here: https://youtu.be/XmZd5iROtz0. *****

Then when I step in the gas pedal it barely accelerates and it can't go more then 15 m.p.h.
Scanned the car( with a cheap scanner I bought) and it shows the code P0700 Transmission Control System (MIL REQUEST)
Btw, the problem comes and goes... like in 5 months it worked 2 times( after forcing it to drive) but after parked, had the same problem the next day.

Actions made:

1. Scanned the car by a professional and they found no codes ( unluckily, the car was okay that day) so they couldn't find anything so he charged me $80.
2. We contacted someone to change the mounts, he said he changed them but everything stayed the same so he removed them and
charged me $180 for changing a shock absorber that had nothing to do with it.
3. Searched on the web and found that it could be a Transmission Range Sensor (TRS), bought it, changed it, and nothing.
4. Left the car in another mechanic ( the car was having the problem, ~10 m.p.h) scanned it like 3 times with different scanners and they found the transmission
input and output speed sensors were open so I bought both, he changed the transmission fluid, erased the codes and it WORKED.... for one day. The next day, the same problem.



So can anyone tell me a good news?
I just don't wanna admit that it can be the transmission but if it is,
where can I buy it? or any safety online website to order it?

Thank you in advance!
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Old 08-22-2016, 10:13 PM   #2 (permalink)
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Do you by any chance have the part number for the Output Speed Sensor??? I would have your TCM checked and make sure it isn't faulty or need flashed with updated software.
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Old 08-25-2016, 03:24 PM   #3 (permalink)
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I do not have the part number... Thank you for your response. I'll post the problem if it ever get fixed.
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Old 08-26-2016, 09:49 PM   #4 (permalink)
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Today I checked my transaxle connector to verify resistances of the sensors and solenoids in my transmission and noticed that none of them are within range... So now I just gotta wait for the wifeedback to have a dayear off so I can pull the pan off and start testing everything.
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Old 11-03-2016, 05:47 PM   #5 (permalink)
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Angry 07 forenza shift/transmission problem

My 07 forenza is doing a lot of the same things were you ever able to discover the problem? please ive had this car since mid june and only got to drive it a total of 10 times spent a ton of money already im ready to drag it across the scales
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Old 12-14-2016, 10:43 AM   #6 (permalink)
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Hi,Dezallday! ... No, I have not fixed the problem yet. I do not know what its wrong with it but I guess it might be a computer problem. I am going to keep working on this car and if I get a solution, I will post it in here....
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Old 12-22-2017, 12:28 PM   #7 (permalink)
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How many times have you changed the trans fluid professionally? These cars are NOTORIOUS for having very very weak transmissions. New cars like the Forenza are designed to fail after about 200,000 mi., but ONLY if you service it like the manual says (Meaning 30,000 mi. interval trans fluid replacements). I was told that by a mechanic.

I have an 08 model, and at 110,000 mi my trans was junked, had to get a replacement from another Forenza. It had the TRS problem, but once I replaced that the replacement then worked!

Maybe next time go with an SUV with a more robust transmission. Cars suck man!
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Old 07-24-2018, 12:13 AM   #8 (permalink)
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Quote:
Originally Posted by Jas429 View Post
Hello there!

I have an Automatic Suzuki Forenza 2005 with a millage of 95,676.

Drove the car for about a minimium of 3hrs with about 2 short stops in between, when on the Highway the car
starts shaking when I reached 65 m.p.h but I ignored that and kept going. When I finnally get home everything
looked and sounded okay.


The next day when I turned the car on, I noticed the engine light was on. I tried to change gear
(after releasing the emergency of course) and the lever was really stiff, when I finally get to change it to drive, or from N to R,
it made a horrible clunking/cracking sound and the car moved back and forth harshly (shaked) without stepping on the gas.

*****The link to the video here: https://youtu.be/XmZd5iROtz0. *****

Then when I step in the gas pedal it barely accelerates and it can't go more then 15 m.p.h.
Scanned the car( with a cheap scanner I bought) and it shows the code P0700 Transmission Control System (MIL REQUEST)
Btw, the problem comes and goes... like in 5 months it worked 2 times( after forcing it to drive) but after parked, had the same problem the next day.

Actions made:

1. Scanned the car by a professional and they found no codes ( unluckily, the car was okay that day) so they couldn't find anything so he charged me $80.
2. We contacted someone to change the mounts, he said he changed them but everything stayed the same so he removed them and
charged me $180 for changing a shock absorber that had nothing to do with it. <_<
3. Searched on the web and found that it could be a Transmission Range Sensor (TRS), bought it, changed it, and nothing.
4. Left the car in another mechanic ( the car was having the problem, ~10 m.p.h) scanned it like 3 times with different scanners and they found the transmission
input and output speed sensors were open so I bought both, he changed the transmission fluid, erased the codes and it WORKED.... for one day. The next day, the same problem.



So can anyone tell me a good news?
I just don't wanna admit that it can be the transmission but if it is,
where can I buy it? or any safety online website to order it?

Thank you in advance!
Hi. I'm wondering if you ever fixed this problem, as I'm having the same issue. I have a 2006 forenza...
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