|
01-22-2014, 07:33 PM | #1 |
Drives: '08 Yaris LB Join Date: Jan 2012
Location: British Columbia, Canada
Posts: 328
|
Check engine light on high revs
I found this previous post and was wondering if anyone has any more info since I had this happen to me today. http://www.yarisworld.com/forums/showthread.php?t=6133
I was about to merge on to a highway and put my shifter into 2 and floored it and it the car started to accelerate, then around 5k rpm dropped down about 500rpm, flashed the check engine light, I let off and reapplied the gas and it did it again. It happened about 4-5 times along the way too. It was cold out but the car was warmed up. No codes were shown, no idea what is up. Seems fine on the way home. any ideas? |
01-22-2014, 09:09 PM | #2 |
ULTIMATE
Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008
Location: USA, CT
Posts: 13,460
|
Misfires. Either you are due for plugs or you have a coil on the way out. If you have access to a code reader that can read historical as well as current codes you would be able to verify which cylinder the misfire was on.
__________________
|
01-22-2014, 09:33 PM | #3 | |
Drives: '08 Yaris LB Join Date: Jan 2012
Location: British Columbia, Canada
Posts: 328
|
Quote:
I've got a scan gauge connected. It was the first thing I checked after I parked. |
|
01-22-2014, 09:40 PM | #4 |
ULTIMATE
Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008
Location: USA, CT
Posts: 13,460
|
ScanGauge only shows current not historical codes. You would need a more sophisticated reader for that.
__________________
|
01-22-2014, 09:54 PM | #5 | |
Drives: '08 Yaris LB Join Date: Jan 2012
Location: British Columbia, Canada
Posts: 328
|
Quote:
Whats the logic behind the gas cap being loose causing the CEL to stay on, but a misfire doesn't even make it stay on? |
|
01-22-2014, 09:56 PM | #6 |
ULTIMATE
Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008
Location: USA, CT
Posts: 13,460
|
Correct. A simple scanner will only show codes when the CEL is on. Smarter tools, like TechStream, show codes that occurred previously, but since have self cleared.
__________________
|
01-23-2014, 11:58 AM | #7 |
El Huevo
Drives: 2007 Liftback Join Date: Aug 2006
Location: CEN*CAL
Posts: 959
|
Had this happen to me a few years back and in my case it was the spark plugs, you may want to check them.
__________________
|
01-24-2014, 08:26 PM | #8 | |
Drives: '08 Yaris LB Join Date: Jan 2012
Location: British Columbia, Canada
Posts: 328
|
Quote:
Thanks guys. |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Check Engine light and advance track light on | 20104dr | DIY / Maintenance / Service | 2 | 10-31-2013 09:59 PM |
Check Engine Light on at 32k kilometers? | caper26 | DIY / Maintenance / Service | 21 | 10-16-2013 12:27 PM |
Cold air intake....check engine light on...??? | JohnnyMalice | Performance Modifications | 4 | 04-29-2012 09:46 PM |
NEED ENGINE CHECK LIGHT CODE LIST | Attitude | Forced Induction Forum | 12 | 04-11-2011 06:38 PM |
Check engine light | Mr Yarisman | Performance Modifications | 7 | 10-24-2009 11:10 PM |