TT and 7AT P0744
 

I searched online and this forum and couldn't find anyone with this trouble code on a 370z.

P0744: Torque Converter Clutch Circuit Intermittent

It seems to be either low fluid or a bad solenoid.


Anyone with any experience on this?

I am a SC'D 7at and no problems no far. Is the car driving any differently. Also how many miles on your build?

About 3000 miles. I have GTM HD Tranny cooler.

The car shifts wierd from 3 to 4. No clunking noise or anything just revs up on its own before shifting from 3 to 4.

Found this video of the same symptom on an Altima.

http://www.youtube.com/watch?v=sgX7AYkKias


Notice in the video at :12. Thats what my 3-4 shift does. Started doing it recently.

Does SAM have any thoughts?

The shift from 3rd to 4th may be normal. Search for flare in the g37 forum.

Will do.

Haven't contacted him yet. That may be my next step in figuring this out.

How is you trans cooler mounted ? Is it upside down ?

Sam

God I hope not.:shakes head:

No its not because the problem started recently.

Having the trans cooler mounted upside down is not a problem. But when you do , It will cause the fluid to drain back to the trans and that will give you a faulty indication of the fluid level in the trans, The system is not that big and all it takes is a half a quart low on fluid for the trans to act up .

Sam

Thanks Sam!

was it upside down??

Im checking it today.

I don't think it is though.

no its not mount upside down.

we had this problem with 3 cars here in Germany - everytime it was the fluid level not being 100% accurate.

Check it and you will find that you miss a few ounces - in my car the tranny behaved very weird (revving up to rpm cut before shifting when in manual mode on the track). And I only missed like 6.7oz !

The 7AT seems to be very very fussy as is the whole car e.g. when it comes to brake fluid. I once missed like less than 0.5inch from the top mark at the reservoir and my trac and abs light came on.

So be careful to always fill every fluid up to the max / optimum mark.

Chris