Cefiro A32 VQ20DE - RPM move up and down during overdrive

marksmensrea

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marksmensrea

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May 29, 2006
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Thanks again Mr. Loh, would you happen to have a picture of the TCU unit you took out ?

Would it be possible to just send me a few pics if possible?
 
Aug 17, 2013
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Kedah
Dear All

Just get A32 this month..
Having same problem. Is there any body know where to find the TCU in Kedah?

Please advise.

Regards
New member..
 

kmunz

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kmunz

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Jun 26, 2005
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Recently just changed my A32 auto gearbox and noticed have the same issue as TS. it is actually a 2nd recon gearbox as the 1st one which was replaced having the same problem. After checking through forum, I question my mech if they replaced the TCU as well when they replace the gob and they said they did. However due to the problem still exist, I asked my mech to use back my old TCU but still problem persist. Any sifus here can suggest what I can do about it? My mech seems like dunno how to rectify the problem.
Also, I noticed that if I switch OD off, the car will stay in 2nd gear and it won't switch to 3rd gear when I am accelerating 4K - 5K rpm.
 

12savefuel

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12savefuel

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Dec 10, 2008
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well you dont know for sure if they actually tried another ecu. if the gear won't up shift between 2-3rd with out od, there has to be a signal problem, its very hard to help when there is so little info for us to work on, remember in order for the trans to aork properly, the trans has to be in good mechanical condition. Then the rest would be sensor or wiring problem and that could be anywhere, the gearbox is controlled by the tcu and the tce communicates with the ecu also, so connection problem could be anywhere. Or the tcu or ecm got problem, speed sensor on the gearbox got problem, so many bro. you might want to send to tcsc to see if they can find any trouble codes first and start from there.
 
Hello I also have the similar problem while driving around 60km/h above, gear stucked and bounce between 4th gear and final drive.

May I know where exactly i can find the TCM to replace, dont tell me from chop shop and i know that already...

Thanks.