CB7Tuner Forums

Go Back   CB7Tuner Forums > Beginner forum -- New members post here! > Beginner Technical/Performance

Reply
 
Thread Tools Rate Thread Display Modes
Old 04-23-2013, 07:36 PM   #1
beatzbydarkness
Newcomer
 
Join Date: Oct 2009
Location: From Oklahoma City home of the THUNDER!!!
Posts: 27
beatzbydarkness is cool... so far.
Question about solenoids and the infamous D4 flashing light...

Hello...my 1993 Honda Accord is at about 208,000 miles. I started noticing when im driving the light over D4 begins to flash. So I jumped the ECU/TCU and got these codes:

ECU 8-top dead centre sensor

TCU 1-Lock-up solenoid 'A' circuit open or shorted
TCU 2-Lock-up solenoid 'B' circuit open or shorted
TCU 7-Shift Solenoid 'A' circuit open or shorted.
TCU 8-Shift Solenoid 'A' circuit open or shorted.

I did some youtubing but couldn't really find anything close to what i need to know or how to fix this problem.

One of the things that I notice is...when it is hot or warm outside. The car will turn over but it won't start, and the D4 light is blinking. On cooler days it will start up no problem, but the D4 light will start blinking at some point during my drive. Im hoping this is an easy fix. Or not too costly of a fix. I was going to flush my transmission over the weekend but the Honda dealer near me had to order some transmission fluid do I was ass out. Help me please...please Help me please!!!! Thanks!!!
beatzbydarkness is offline   Reply With Quote
Old 04-23-2013, 11:16 PM   #2
92exa6
CB7tuner Member
 
Join Date: May 2010
Location: twin cities
Posts: 104
92exa6 is cool... so far.
Step one would be to delete all those codes and then go drive the car until it fails again, then recheck what code(s) come up. Unless you personally have reset the ecu recently you don't know how old those codes are and should start fresh to save time not diagnosing old codes that may have been corrected. Post the results after the reset and test drive.
92exa6 is offline   Reply With Quote
Old 04-24-2013, 11:07 AM   #3
beatzbydarkness
Newcomer
 
Join Date: Oct 2009
Location: From Oklahoma City home of the THUNDER!!!
Posts: 27
beatzbydarkness is cool... so far.
Cool! I just did the reset and let it run for awhile. I'll be on my way to work in just a little bit so I'll post how the ride to work was. I greatly appreciate your reply. So far I notice the green light is gone but the check engine light is still there. Get back in just a few.
beatzbydarkness is offline   Reply With Quote
Old 04-24-2013, 04:57 PM   #4
beatzbydarkness
Newcomer
 
Join Date: Oct 2009
Location: From Oklahoma City home of the THUNDER!!!
Posts: 27
beatzbydarkness is cool... so far.
Okay...the check engine light is still on. Even though I reset it. And after I get about a mile or two up the road the D4 light starts flashing again. Should I jump it and see what codes come up?
beatzbydarkness is offline   Reply With Quote
Old 04-24-2013, 10:58 PM   #5
92exa6
CB7tuner Member
 
Join Date: May 2010
Location: twin cities
Posts: 104
92exa6 is cool... so far.
Yep, pull the codes again and post them up.
92exa6 is offline   Reply With Quote
Old 04-25-2013, 04:04 PM   #6
beatzbydarkness
Newcomer
 
Join Date: Oct 2009
Location: From Oklahoma City home of the THUNDER!!!
Posts: 27
beatzbydarkness is cool... so far.
Quote:
Originally Posted by 92exa6 View Post
Yep, pull the codes again and post them up.
I got the same exact codes as above.
beatzbydarkness is offline   Reply With Quote
Old 04-25-2013, 04:08 PM   #7
beatzbydarkness
Newcomer
 
Join Date: Oct 2009
Location: From Oklahoma City home of the THUNDER!!!
Posts: 27
beatzbydarkness is cool... so far.
Funny thing too....I have been parking my car in the garage where it is much cooler I guess and my car does not stall and flash the D4 light when I try to start it. It starts right up. If I leave it in the sun....It will turn over but it wont start.
beatzbydarkness is offline   Reply With Quote
Old 04-25-2013, 04:13 PM   #8
jhoff
CB7tuner Member
 
Join Date: Oct 2008
Location: LV-426
Posts: 3,229
jhoff is cool... so far.
Your transmission could be on the way out as well...
jhoff is offline   Reply With Quote
Old 04-25-2013, 08:20 PM   #9
MustardCat
CB7tuner Member
 
Join Date: Feb 2013
Location: Mount Vernon, WA
Posts: 33
MustardCat is cool... so far.
This is written for a Prelude but you should be able to do similar with an Accord to clean the solenoids:

http://mustardcat.brinkster.net/p3g/...toSolenoid.htm
__________________

92 Accord LX Coupe Build
91 Prelude H22a Build
91 Prelude 4WS ALB Build
You can't rationalize cars like these. They're not something you buy with your head, you buy them with your heart because you love them, and who can explain love?

MustardCat is offline   Reply With Quote
Old 04-25-2013, 10:29 PM   #10
beatzbydarkness
Newcomer
 
Join Date: Oct 2009
Location: From Oklahoma City home of the THUNDER!!!
Posts: 27
beatzbydarkness is cool... so far.
Quote:
Originally Posted by MustardCat View Post
This is written for a Prelude but you should be able to do similar with an Accord to clean the solenoids:

http://mustardcat.brinkster.net/p3g/...toSolenoid.htm
Thanks alot for this. Im going to make this my saturday project and I'll let you know how it went. Thanks so much!
beatzbydarkness is offline   Reply With Quote
Old 04-26-2013, 12:29 AM   #11
emosun
CB7tuner Member
 
Join Date: Aug 2011
Posts: 266
emosun is cool... so far.
Quote:
Originally Posted by jhoff_cb7 View Post
Your transmission could be on the way out as well...
I like people that type these kinds of responses.
emosun is offline   Reply With Quote
Old 04-26-2013, 01:00 AM   #12
Leung
CB7tuner Member
 
Join Date: May 2006
Location: Cincinnati
Posts: 3,507
Leung is someone to admire Leung is someone to admire Leung is someone to admire
Theres a lot of information about the tranny solenoids at

http://techauto.awardspace.com/transmission.html
__________________
Leung is offline   Reply With Quote
Old 04-26-2013, 02:58 PM   #13
liquidoblivion
Newcomer
 
Join Date: Nov 2005
Posts: 9
liquidoblivion is cool... so far.
Can't be of much help on the transmission issues, I have going through the same thing, but the car not starting when its hot outside is likely your main relay. Its a simple fix if you know how to reflow the solder joints on the back of the board in the relay.
liquidoblivion is offline   Reply With Quote
Old 04-26-2013, 05:14 PM   #14
cloudasc
CB7tuner Member
 
Join Date: Apr 2007
Location: Laguna Seca
Posts: 2,540
cloudasc is someone to admire cloudasc is someone to admire cloudasc is someone to admire
All those codes at once typically means that your TCU (Transmission Computer) is fried. The capacitors in the TCU's are notorious to leak, and cause the exact symptoms you described. It is possible to fix your TCU for under $5 if you know, or know someone who can solder. Check the link in the my Signature for 'DIY: 90-93 Tcu Fix' for instructions.
cloudasc is offline   Reply With Quote
Old 04-26-2013, 06:56 PM   #15
beatzbydarkness
Newcomer
 
Join Date: Oct 2009
Location: From Oklahoma City home of the THUNDER!!!
Posts: 27
beatzbydarkness is cool... so far.
Quote:
Originally Posted by cloudasc View Post
All those codes at once typically means that your TCU (Transmission Computer) is fried. The capacitors in the TCU's are notorious to leak, and cause the exact symptoms you described. It is possible to fix your TCU for under $5 if you know, or know someone who can solder. Check the link in the my Signature for 'DIY: 90-93 Tcu Fix' for instructions.
COOOOOOLLLLLL!!!! Man I appreciate everyones help I really do!!! I don't know how to solder but im going to get on CL and see if I can find someone. Im located in Lewisville Texas right in between Denton and Carrollton btw so if anyone is close by and can help me out please hit me up!
beatzbydarkness is offline   Reply With Quote
Old 10-04-2014, 12:02 PM   #16
mrjarvisful
Newcomer
 
Join Date: Oct 2014
Posts: 9
mrjarvisful is cool... so far.
Quote:
Originally Posted by liquidoblivion View Post
Can't be of much help on the transmission issues, I have going through the same thing, but the car not starting when its hot outside is likely your main relay. Its a simple fix if you know how to reflow the solder joints on the back of the board in the relay.
i was having the same issue, untill i resoldered a broke joint. it cranks up perfect but still having the same code problems with solenoid shortage or opening.
mrjarvisful is offline   Reply With Quote
Old 10-04-2014, 12:35 PM   #17
wildBill83
CB7tuner Member
 
Join Date: Aug 2012
Location: Back in Texas
Posts: 2,045
wildBill83 seems to have made some friends!
Try swapping a reman TCU in. You might not have fully repaired the TCU.
wildBill83 is offline   Reply With Quote
Old 12-19-2014, 04:39 PM   #18
CisForCB7
CB7tuner Member
 
Join Date: Oct 2006
Location: Salem, Oregon
Posts: 447
CisForCB7 is cool... so far.
Main Relay, Guaranteed.

Cheap and free way to test.

You have D4 Light and/or CEL and car only turns over.

Step 1: Turn the key back to the off position.
Step 2: Locate your main relay (under your driver side dash)
Step 3: Knock on your main relay. (Just tap it with a screw driver or something)
Step 4: Turn the key two clicks and watch as your CEL and D4 light have disappeared.
Step 5: Replace main relay.

I battled this problem for a year or two. Luckily i live in Oregon and its cold most the year but summer time i'd have to leave early for work all the time just cuz i never knew if id get this error code and not be able to start. I replaced the solenoids (and i had the exact same codes as you) but it didn't change the CEL or D4 light. Turns out the main relay (more than likely if its not the OEM one) has very cheap soldering and with the higher temperatures outside causes failure. The aftermarket replacement main relays are made very cheaply. They use a method of soldering called wave soldering. Basically mass production soldering. Defiantly gives you quantity over quality.

But yeah hope that helps someone if not you. Lol i know its a late post but i came across this and had to say something cuz i fought this forever and no where did anyone send me in the direction of the main relay.
__________________
My Member's Ride Page (Do it)
CisForCB7 is offline   Reply With Quote
Reply

Tags
d4 light , ecu , solenoid , tcu , transmission problem

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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 Off
Forum Jump


All times are GMT -5. The time now is 02:55 AM.


Powered by vBulletin® Version 3.7.1
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.