'98 CL transmission code: PO-740???
06-11-2004, 09:49 AM
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'98 CL transmission code: PO-740???
I have a 98 CL 2.3 The check engine light came on today, I had a friend run a code which was a PO-740 "Torque converter clutch circuit malfunction" The engine "free wheels" between gears. What do you recommend for the fix?
06-11-2004, 06:45 PM
#2
Suzuka Master
Try this...
I don't have a service guide for the earlier CLs.
However, here is a Google link. There seem to be a number of folks that have gotten that code:
http://www.google.com/search?hl=en&l...&q=PO-740+code
You might have a bad solenoid or other problem. Not having the manual, it's hard to know.
Here is one link of particular interest:
http://www.realcaraudio.com/forums/a...opic/7280.html
However, here is a Google link. There seem to be a number of folks that have gotten that code:
http://www.google.com/search?hl=en&l...&q=PO-740+code
You might have a bad solenoid or other problem. Not having the manual, it's hard to know.
Here is one link of particular interest:
http://www.realcaraudio.com/forums/a...opic/7280.html
According to the Honda Service manual for the 99 Accord w/ 4 cylinder engine, the Diagnostic Trouble Code P0740 indicates that the "Lock-up clutch does not engage".
Assuming that no other trouble codes are indicated and the line pressure is within the service limit, the manual advises to replace the Lock-up Control Solenoid Assembly set (2 components). Then reset the PCM memory, warm up the engine, and drive at 55 mph for 1 min to see if the DTC is triggered again.
If yes, then the manual advises replacing the transmission and torque converter. (There's no telling whether these instructions also apply to the V6 transmission, but these are the kinds of questions to ask your mechanic.
Did they even get this far?) So don't give up yet; it may be possible to fix your transmission without having to replace the whole thing.
Assuming that no other trouble codes are indicated and the line pressure is within the service limit, the manual advises to replace the Lock-up Control Solenoid Assembly set (2 components). Then reset the PCM memory, warm up the engine, and drive at 55 mph for 1 min to see if the DTC is triggered again.
If yes, then the manual advises replacing the transmission and torque converter. (There's no telling whether these instructions also apply to the V6 transmission, but these are the kinds of questions to ask your mechanic.
Did they even get this far?) So don't give up yet; it may be possible to fix your transmission without having to replace the whole thing.
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