iponnet22

I just bought a 2000 Acura 3.2TL with 123K miles on it. Before I took it to get it smoged (emissions test in cali) I scanned it to make sure all the Emissions monitors where ready and they were. Than even though the CEL was not on I scanned it for codes and it gave me P1740 4th gear pressure switch fluid flow or something to that effect, I dont remember the exact description.

Searching around on this forum I know it seems to be a common fault code on these cars and it usually means a dying transmission, my question is, to me the transmission shifts pretty much flawlessly I cant get any thumping or jolting in any gear no matter how I drive it...I have checked the ATF and its pinkish to light brown and doesnt smell burnt at all... So what are my chances of or I guess how long can I prolong the life of this transmission if I replace the 4th gear pressure switch and do a 3x3 D/F on it!

Should I not waste any money on this? I can probably get close to my money back if I resell it even with this cel since I got the car cheap.

All advice appreciated,
thanks

one last thing I erased the code to see how soon it comes back and have driven it for about 80 miles and it still hasnt come back.

Karanx7

iTrader: (2)

If the car has been shifting fine, I would just replace the pressure switches and do a 3x3.

iponnet22

should I replace any other pressure switches besides the 4th pressure switch? thanks

Stephen00TL

I would replace both and do the 3x3 like karanx7 said

iponnet22

by both you mean 3rd and 4th gear pressure switches? thanks

Karanx7

iTrader: (2)

I think there's 2 pressure switches. One for 1,3,5 and another for 2,4. Could be completely wrong though.

Stephen00TL

Yes the third and fourth gear pressure switches

@ karanx7 I beleive the rest are internal and can't be replaced without cracking the case however I could be wrong

Karanx7

iTrader: (2)

Yea, that sounds about right.

iponnet22

Ty gentlemen, I will do this tomorrow and report back if the codes come back on!

Sperry

iTrader: (1)

The code may not come back on.

I had the code, which cleared and reappeared.

After purchasing the 3rd and 4th gear pressure switches, I decided to try restoring the switches with brake cleaner.

It worked, and I resold the switches. It has been sixteen months and 23,000 miles since my service.

3.2TLc

Hey Iponnent22, ya may just want to try a drain & fill using Honda DW1 fluid, if you're not experiencing any shifting problems. Replace the tranny's external filter and clean the Lock-up/Shift control solenoid valve "A". Could be the screen's clogged or the connector's loose ?

If after resetting the code and it comes back, then replace the Pressure control valve "A/B" assembly as previously suggested. Worth a shot if the fluid is old and worn.