S2000 Under The Hood S2000 Technical and Mechanical discussions.

CEL after 6k rpm w/ no VTEC

Thread Tools
 
Old May 16, 2010 | 09:19 PM
  #1  
toniotran's Avatar
Thread Starter
Registered User
 
Joined: Aug 2008
Posts: 1,452
Likes: 0
From: Socal
Thumbs down CEL after 6k rpm w/ no VTEC

Prior to incident, I just got done changing the oil and transmission fluid and all seemed well. Made sure both fluids were sufficient w/ no leaks and then decided to give the car a test drive and all seemed well until I tried engaging in vtec (which didn't happen) and then soon after a cel pops up. Tried the ecu reset and then when I turn the key to the on position the cel dissapears for a few seconds seeming to have dissapear and then it comes back on. If anyone has any suggestions or thoughts on what it could possibly be, please help

Update: Used a scanner and the code that popped up was P1259 (Vtec System Malfunction). I've already checked to make sure that the oil level was good and that all the plugs from the vtec solenoid were connected and when trying to reset the cel it goes away and then reappears. While driving the car all seems well until I come to a complete stop and then the car dies and when accelerating the car cuts off at about 6k rpm and no vtec. What could possibly be causing this?

TIA,
Tony
Reply
Old May 16, 2010 | 09:23 PM
  #2  
chris_barry's Avatar
 
Joined: Sep 2002
Posts: 1,938
Likes: 4
From: Sydney
Default

Check the connector that hangs out horizontally from the vtec solonoid housing directly above the oil filter.

If this is disconnected the ECU cannot confirm that the vtec solonoid has successfully switched oil into the VTEC rockers and the ECU goes into limp home mode.
Reply
Old May 16, 2010 | 09:29 PM
  #3  
SOHCmyDOHC's Avatar
Gold Member (Premium)
20 Year Member
 
Joined: Apr 2003
Posts: 26,653
Likes: 0
From: SF Bay Area and Sactown
Default

Originally Posted by chris_barry,May 16 2010, 10:23 PM
Check the connector that hangs out horizontally from the vtec solonoid housing directly above the oil filter.

If this is disconnected the ECU cannot confirm that the vtec solonoid has successfully switched oil into the VTEC rockers and the ECU goes into limp home mode.


But also recheck oil level
Reply
Old May 16, 2010 | 09:30 PM
  #4  
moogleii's Avatar
15 Year Member
 
Joined: May 2007
Posts: 1,924
Likes: 0
From: OC
Default

and the actual cel code
Reply
Old May 16, 2010 | 10:04 PM
  #5  
toniotran's Avatar
Thread Starter
Registered User
 
Joined: Aug 2008
Posts: 1,452
Likes: 0
From: Socal
Default

Originally Posted by chris_barry,May 16 2010, 09:23 PM
Check the connector that hangs out horizontally from the vtec solonoid housing directly above the oil filter.

If this is disconnected the ECU cannot confirm that the vtec solonoid has successfully switched oil into the VTEC rockers and the ECU goes into limp home mode.
is it the one with a rubber boot cover over it, if so it's plugged in.
Reply
Old May 16, 2010 | 10:05 PM
  #6  
toniotran's Avatar
Thread Starter
Registered User
 
Joined: Aug 2008
Posts: 1,452
Likes: 0
From: Socal
Default

I've also check the oil level and that seems fine also.
Reply
Old May 16, 2010 | 10:32 PM
  #7  
Stealth_SUX_'s Avatar
Registered User
Gold Member (Premium)
 
Joined: May 2007
Posts: 1,284
Likes: 1
From: Modesto, CA
Default

instead of spending all day guessing, go rent a scan tool from autozone and with that you can ussually find the exact problem
Reply
Old May 17, 2010 | 06:09 AM
  #8  
chris_barry's Avatar
 
Joined: Sep 2002
Posts: 1,938
Likes: 4
From: Sydney
Default

Originally Posted by toniotran,May 17 2010, 04:04 PM
is it the one with a rubber boot cover over it, if so it's plugged in.
Not that one. The important one is higher up. Its just below the rocker cover next to the #1 header pipe. It has a grey plastic plug with wires in it.
Reply
Old May 17, 2010 | 06:20 AM
  #9  
Crisgo's Avatar
Registered User
 
Joined: Jul 2009
Posts: 340
Likes: 0
Default

Originally Posted by Stealth_SUX_,May 16 2010, 10:32 PM
instead of spending all day guessing, go rent a scan tool from autozone and with that you can ussually find the exact problem
I second that.
Reply
Old May 17, 2010 | 08:56 AM
  #10  
toniotran's Avatar
Thread Starter
Registered User
 
Joined: Aug 2008
Posts: 1,452
Likes: 0
From: Socal
Default

Originally Posted by chris_barry,May 17 2010, 06:09 AM
Not that one. The important one is higher up. Its just below the rocker cover next to the #1 header pipe. It has a grey plastic plug with wires in it.
the vtec oil pressure switch? i'll take a look and also try to have the codes pulled.
Reply



All times are GMT -8. The time now is 07:25 AM.