CEL after driving awhile, no engine problems. Happens once a year, randomly... - D-series.org

PianoMan · 08-02-2010, 08:27 PM

A weird one for you all. I get a constant CEL, no engine issues, after driving at speed for awhile (greater than 30-45 minutes). Engine runs perfectly fine, no changes, until I park and shut off the engine.

Next time I start up, it's gone. No codes, nothing.

Thought it was only when you drive >70mph - the last time it happened was with the wife driving almost a year ago. But I just drove 70+ mph consistently for the last 15 min on my commute home with no CEL. It could be time and speed based, dunno.

Thinking it may be an intermittent ground on my s300 - I'm gonna hook up the laptop next time it happens.

I'll also try an ECU reset - but with this rarely happening, no telling if that's the issue or not.

Any thoughts, ideas, or theories? Thanks!

2jzdreamin · 08-02-2010, 08:32 PM

cant say for sure with out the code but it might be vtec if you have vtec....could all so be eld..or it code be a loose wire

PianoMan · 08-02-2010, 08:45 PM

Thx for the quick response. Yah, not having the code aggravates me a bit. Since it happens so rarely, no telling when it'll crop up again.

EDL? Did u mean ELD?

Will keep those in mind - hopefully I can solve it soon. May need to take the laptop up the coast for a long drive.

wizard's blood · 08-02-2010, 08:47 PM

ya just get that code and we'll tell you whats up.

2jzdreamin · 08-02-2010, 08:54 PM

EDL? Did u mean ELD?

yea thats what i meant to type

08-02-2010, 08:27 PM	#1 (permalink)
PianoMan D-Series cadet iTrader: (0) Join Date: Dec 2006 Location: SoCal Smog Hell Posts: 391 Rep Power: 7	CEL after driving awhile, no engine problems. Happens once a year, randomly... A weird one for you all. I get a constant CEL, no engine issues, after driving at speed for awhile (greater than 30-45 minutes). Engine runs perfectly fine, no changes, until I park and shut off the engine. Next time I start up, it's gone. No codes, nothing. Thought it was only when you drive >70mph - the last time it happened was with the wife driving almost a year ago. But I just drove 70+ mph consistently for the last 15 min on my commute home with no CEL. It could be time and speed based, dunno. Thinking it may be an intermittent ground on my s300 - I'm gonna hook up the laptop next time it happens. I'll also try an ECU reset - but with this rarely happening, no telling if that's the issue or not. Any thoughts, ideas, or theories? Thanks! __________________ D16z6 JRSC @6psi & RC 440cc Injectors Hondata/JRSC Re-Programmed s300 ECU Eibach Pro-System Plus (Springs, Dampers, and Anti-Roll Kit) Buying, when I gets $$$ and time to put in: 8psi pulley from ASP Racing.

08-02-2010, 08:32 PM	#2 (permalink)
2jzdreamin All powerful D-series member iTrader: (33) Join Date: Aug 2009 Location: N.Y. Posts: 4,462 Rep Power: 11	cant say for sure with out the code but it might be vtec if you have vtec....could all so be eld..or it code be a loose wire __________________ MY BUILD THREAD WITH WIRE AND BRAKE LINE TUCK http://www.d-series.org/forums/showc...line-tuck.html PM me for obd1 & obd2 tucked mil spec harnesses http://www.d-series.org/forums/sale/...e-harness.html all so do vtec sub-harness tucked headlight harness http://www.d-series.org/forums/showc...-hottness.html MAGIC-WIRES FOR YOUR ENGINE HARNESS NEEDS Last edited by 2jzdreamin; 08-02-2010 at 08:53 PM.

08-02-2010, 08:45 PM	#3 (permalink)
PianoMan D-Series cadet iTrader: (0) Join Date: Dec 2006 Location: SoCal Smog Hell Posts: 391 Rep Power: 7	Thx for the quick response. Yah, not having the code aggravates me a bit. Since it happens so rarely, no telling when it'll crop up again. EDL? Did u mean ELD? Will keep those in mind - hopefully I can solve it soon. May need to take the laptop up the coast for a long drive. __________________ D16z6 JRSC @6psi & RC 440cc Injectors Hondata/JRSC Re-Programmed s300 ECU Eibach Pro-System Plus (Springs, Dampers, and Anti-Roll Kit) Buying, when I gets $$$ and time to put in: 8psi pulley from ASP Racing.

08-02-2010, 08:47 PM	#4 (permalink)
wizard's blood Poop Sock iTrader: (34) Join Date: Jul 2008 Location: austin, tx Posts: 3,802 Rep Power: 19	ya just get that code and we'll tell you whats up. __________________ --------------------------------------- DD: 07 wrx stg2

08-02-2010, 08:54 PM	#5 (permalink)
2jzdreamin All powerful D-series member iTrader: (33) Join Date: Aug 2009 Location: N.Y. Posts: 4,462 Rep Power: 11	EDL? Did u mean ELD? yea thats what i meant to type __________________ MY BUILD THREAD WITH WIRE AND BRAKE LINE TUCK http://www.d-series.org/forums/showc...line-tuck.html PM me for obd1 & obd2 tucked mil spec harnesses http://www.d-series.org/forums/sale/...e-harness.html all so do vtec sub-harness tucked headlight harness http://www.d-series.org/forums/showc...-hottness.html MAGIC-WIRES FOR YOUR ENGINE HARNESS NEEDS

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