Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E36 (1991 - 1999)

E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

Reply
 
Thread Tools Display Modes
  #1  
Old 10-18-2012, 04:01 PM
JUANEO JUANEO is offline
Registered User
Location: NEW YORK
 
Join Date: Mar 2007
Posts: 8
Mein Auto: 1996 328I
P0740 code, bad or not?

So a couple of weeks ago the CEL popped up on my automatic '96 328i (138k miles). Drove it home the 50 miles I needed to and parked it. Sat in my driveway for two weeks until I could bring it to my mechanic, wasn't taking any chances. Mechanic runs codes and comes up with P0740 (111) code. Car is running fine. He couldn't find anything wrong with it. The tranny fluid was changed 8,000 miles ago and was metal free (mechanic dropped the pan and everything). He cleared the code and sent me on my way. Should I be worried? I was going to drop about $5,000 into it this spring for upgraded springs, shocks, struts, and some bodywork, but now I'm having second thoughts. First time in 5 years of ownership (bought at 77k miles) that a CEL came on. Only major repair has been the cooling system 2 summers ago. Thoughts? Advice?
Reply With Quote
Advertisement
  #2  
Old 10-18-2012, 04:31 PM
ZeGerman's Avatar
ZeGerman ZeGerman is offline
Warm Leatherette
Location: Seattle, WA
 
Join Date: Mar 2009
Posts: 19,022
Mein Auto: 1998 BMW 328is
Check out some of the common causes of this code:

http://repairpal.com/OBD-II-Code-P0740

If you search around by using E36 and P0740 as keywords, you'll get some more info on it.
__________________

1998 BMW 328is
1966 Pontiac GTO
2007 Subaru Impreza 2.5i 5-door
View my photos: Caught in the Wild
For sale: E30/E36 front sway links
For sale: OEM E36 328 catback
Reply With Quote
  #3  
Old 10-19-2012, 04:10 AM
JUANEO JUANEO is offline
Registered User
Location: NEW YORK
 
Join Date: Mar 2007
Posts: 8
Mein Auto: 1996 328I
Quote:
Originally Posted by ZeGerman View Post
Check out some of the common causes of this code:

http://repairpal.com/OBD-II-Code-P0740

If you search around by using E36 and P0740 as keywords, you'll get some more info on it.
Great link! Thank you. I tried searching earlier today but only came up with similar posts and answers ranging from "ignore it" to "it's the solenoid" to "replace the whole tranny". But most posts were on the E39 forums. I was starting to think the mechanic misread the codes. Guess I'll watch it more closely for the next few weeks and see what happens. Thanks again!
Reply With Quote
  #4  
Old 10-19-2012, 09:33 AM
petriej's Avatar
petriej petriej is offline
Cruising 280 Top Down
Location: San Jose, CA
 
Join Date: Jul 2010
Posts: 6,088
Send a message via Skype™ to petriej
Mein Auto: '99 M3 Cab & '05 X5 4.8is
If I'm reading the code summary properly, it means you probably need some transmission work done. The torque converter needs to lockup so you can drive the car properly. Without lockup (or if it gets stuck locked up) bad things may happen. The latter being worse than the former, I imagine.
__________________

GGC BMW CCA #443004
Join the BMW CCA!

Quote:
Originally Posted by hornhospital View Post
Jared, why don't you just put "It's Giubo" in your sig? Save a lot of typing.
Quote:
Originally Posted by e36 miguel View Post
this jared guy sounds intimidating lol.
2005 X5 4.8is Le Mans/Black/6spd Steptragic
1999 M3 Cabrio TiAg Metallic/Dove Grey/Black 5 Speed Manual
-------------------------------------------------------------------
1997 328iC Schwarz II/K/K 5MT SOLD 5/2012
2004 645Ci Mineral Silver Metallic/Black 6MT RIP 04/2011
Reply With Quote
  #5  
Old 10-19-2012, 11:18 AM
JUANEO JUANEO is offline
Registered User
Location: NEW YORK
 
Join Date: Mar 2007
Posts: 8
Mein Auto: 1996 328I
Quote:
Originally Posted by petriej View Post
If I'm reading the code summary properly, it means you probably need some transmission work done. The torque converter needs to lockup so you can drive the car properly. Without lockup (or if it gets stuck locked up) bad things may happen. The latter being worse than the former, I imagine.
Yeah, that's what I'm guessing. If the light pops up again it's going to have to be fully diagnosed. Could be anything from the solenoid to a full rebuild, and anything in between. Debating if it;s even worth it. The car came with a salvaged title, has 138k miles on it, needs some minor bodywork (rust and dings), and some suspension maintenance work. If the tranny goes it may not be worth saving. I might be better off finding another E36 or even an E39 and spending the $5,000 I was setting aside on that. Mind you, this is my first BMW and I absolutely love the reliability I've gotten from it, but you have to cut your losses somewhere.
Reply With Quote
  #6  
Old 10-19-2012, 11:27 AM
RawrRawr RawrRawr is offline
Hello!
Location: Le Minnesota
 
Join Date: Apr 2011
Posts: 285
Mein Auto: A bike; 1996 328i Sedan
A sensible man is in our presence.
__________________

'96 328i BMW, Auto
Reply With Quote
  #7  
Old 11-27-2012, 05:09 AM
josephroberts75 josephroberts75 is offline
Registered User
Location: northcarolina
 
Join Date: Nov 2012
Posts: 23
Mein Auto: e36 bmw
PO740 torque converter clutch circut malfuntion. try and see if the connectors are making agood contact and check your wires for chaffing. hope it works out well!
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E36 (1991 - 1999)
Today's Posts Search
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On



Forum Jump


All times are GMT -7. The time now is 01:34 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms