2004 Accord No Start No CEL - Honda Accord Forum - Honda Accord Enthusiast Forums


General Tech Help Good at troubleshooting? Have a non specific issue? Discuss general tech topics here.

Reply
 
 
 
Thread Tools Search this Thread
  #1  
Old 07-12-2018, 01:14 PM
Thread Starter
 
Join Date: Jul 2018
Posts: 5
Unhappy 2004 Accord No Start No CEL

I am working on a 2004 accord with the 2.4 L engine and manual transmission. I installed a different engine out of a 2005 Accord. The engine ran got computer to reprogram idle then took for a test drive . Parked car now there is no CEL or Battery light when you turn ignition on. The scan tool will not communicate and the car turns over but will not start. There is no spark at plugs and I don't think there is power getting to computer. Need to know the wire color of hot wires to computer so I can double check. All the relays in the interior fuse box checked ok. Looking for Ideas as to what to check and how to get CEL working again. Thanks
Reply With Quote
  #2  
Old 07-12-2018, 07:47 PM
Super Moderator
 
Join Date: Sep 2006
Location: Houston, TX
Posts: 12,823
Default

Why did you install a new engine?

Have you tested all of the fuses? If you have a test light, there is a quick way to test for power on both sides of the fuse. See video below:

Reply With Quote
  #3  
Old 07-12-2018, 09:27 PM
Thread Starter
 
Join Date: Jul 2018
Posts: 5
Default

Installed new engine because old engine variable clutch on cam went bad and valves hit pistons broke and fell into cylinder and ruined piston and head. Cheaper to replace engine then to rebuild. Yes checked all fuses and relays all tested good. Cleaned all connections with contact cleaner still no power to engine computer.
Reply With Quote
  #4  
Old 07-12-2018, 09:46 PM
 
Join Date: Jul 2018
Posts: 2
Default Not sure if i can reply here

Quote:
Originally Posted by tmeiser View Post
Installed new engine because old engine variable clutch on cam went bad and valves hit pistons broke and fell into cylinder and ruined piston and head. Cheaper to replace engine then to rebuild. Yes checked all fuses and relays all tested good. Cleaned all connections with contact cleaner still no power to engine computer.
just my input is when no cel and no dtc data you dont have ecu ground double check the harness and grounds
Reply With Quote
  #5  
Old 07-12-2018, 10:53 PM
redbull-1's Avatar
Super Moderator
 
Join Date: Oct 2010
Location: United States
Posts: 6,573
Default

  1. Under-dash Fuse No. 19 (15A) provides Ignition Input power (+) to ECM/PCM when ignition switch is in ON (II) or START (III) position. - Via Blk/Yel wire to terminal no. 9 of ECM/PCM Connector E.
  2. Ground to ECM/PCM is from Ground G101 located at middle of engine (under plastic engine cover that is over the intake manifold). Ground G101 wires go to ECM/PCM at terminal nos. 4, 5, 8, and 9 of ECM/PCM Connector A.
  3. Under-hood Fuse No. 8 (15A) provides power (+) to the Data Link Connector (DLC), aka OBD port.
Reply With Quote
  #6  
Old 07-13-2018, 10:00 AM
Thread Starter
 
Join Date: Jul 2018
Posts: 5
Default

It was the Ground on intake cleaned rebolted and working now. Have 2 codes now High idle rpm ( how do I adjust ) and intake vacuum leak which I can't find. Any more suggestions Thanks for the help.
Reply With Quote
  #7  
Old 07-13-2018, 10:03 AM
Thread Starter
 
Join Date: Jul 2018
Posts: 5
Default

Idle jumps from 1000 rpm to 2200 rpm at idle only when warm when cold sits at 1000 rpm
Reply With Quote
  #8  
Old 07-13-2018, 10:16 AM
redbull-1's Avatar
Super Moderator
 
Join Date: Oct 2010
Location: United States
Posts: 6,573
Default

Quote:
Originally Posted by tmeiser View Post
It was the Ground on intake cleaned rebolted and working now. Have 2 codes now High idle rpm ( how do I adjust ) and intake vacuum leak which I can't find. Any more suggestions Thanks for the help.

What are the trouble codes? Post the alpha numeric codes.
Reply With Quote
  #9  
Old 07-13-2018, 10:20 AM
Thread Starter
 
Join Date: Jul 2018
Posts: 5
Default

P0507 RPM high idle control system
P2279 Intake Air System leak
Reply With Quote
  #10  
Old 07-13-2018, 10:33 AM
redbull-1's Avatar
Super Moderator
 
Join Date: Oct 2010
Location: United States
Posts: 6,573
Default

An idle learn probably has to be performed.


There was a May 2013 Honda Service News article for the following. A different Honda Service News article, which I can't find right now was for both those codes and had to do with a idle learn to be performed.


MIL On With DTC P2279 After Throttle Body Cleaning or Replacement

Currently Applies To: ’08–13 Accord L4, ’06–13 Accord V6, ’14 Accord Plug-In, ’12–13 Civic, ’06–13 CR-V, ’06–13 Odyssey, ’05–13 Pilot, and ’06–13 Ridgeline
Just cleaned or replaced the throttle body and now you’ve got a fluctuating idle, the MIL is on with DTC P2279 (intake air system leak), or both? What’s probably happened is the throttle plate is now in a different position from the one the ECM/PCM had learned.
To fix this problem, the ECM/PCM has to relearn the current closed throttle position. Here’s how to do it:
  1. Go to INSPECTION MENU in the HDS, and select ETCS TEST.
  2. Select TP POSITION CHECK, and clear the throttle position learned value.
  3. Turn off the ignition, then, turn it back on.
  4. Reset the ECM/PCM.
  5. Do the idle learn procedure.
  6. Recheck for DTCs. If DTC P2279 doesn’t reset, you’re done. If it does, continue with normal troubleshooting.




The following is generally the idle learn procedure:

Make sure all electrical items (A/C, audio, lights, etc.) are off. Disconnect battery for a short while (3 minutes would be fine). Turn ignition switch to ON (II) and wait 2 seconds. Start engine and hold engine speed at 3,000 rpm without load (A/T in P or N, M/T in neutral) until radiator fan comes on, or until engine coolant temp. reached 194 degrees F. Let the engine idle for about 5 minutes with the throttle fully closed. (If radiator fan comes on, do not include the running time in the 5 minutes.)
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
1997 Accord shutting off no start with cel 19dabeast85 General Tech Help 9 03-20-2012 11:26 PM
92 Accord CEL Code 6, Hard Start trailshredder General Tech Help 5 12-19-2011 06:27 PM
2000 Accord - Won't start/No CEL/Fried ecu? fbp cd5 General Tech Help 1 06-20-2011 07:49 PM
2004 HondaAcc EX CEL - Oxygen Sensor Mississippi Girl Engine & Internal 1 02-02-2009 08:14 AM
92 Accord..intermittent TDC CEL code on start drfrankencopter Engine & Internal 0 10-28-2007 08:36 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Advertising

All times are GMT -5. The time now is 06:06 PM.


© 2018 MH Sub I, LLC dba Internet Brands
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.