Check Engine Light IS CRAZY

Dillon · Post by **Dillon** » Sun Aug 12, 2007 9:26 pm

My check engine light go's on and off like every other day, but by the time i get to autozone its off. Any sugestions on what would cause this?

jidasas · Post by **jidasas** » Sun Aug 12, 2007 9:30 pm

Only thing I can say is good luck cause once the light is out it can't read a code...

I did experience something similar though...it was caused by bad gas...my engine was misfiring and the cel would come on...by the time I got to advance it would be off...the guy there guessed it was bad gas and told me to buy some gas treatment and watch when the light came on and note where I had bought gas at...Turns out everytime I bought gas at the station next to my college campus the light came on...The gas treatment is just to get any water that might be in the tank out...

hope yours could be that simple.

Jimmy

daewoomofo · Post by **daewoomofo** » Sun Aug 12, 2007 10:01 pm

since your car is OBD II they can read the code, even if the light is off at the time. it is stored in the memory of the ecu. so just go get it scanned

jidasas · Post by **jidasas** » Mon Aug 13, 2007 10:57 pm

That's what I thought to...but evidently if the light doesn't stay on for a certain period then the computer in our cars throws the code out cause I scanned mine after the light came on for a bit and had no code stored.

Jimmy

daewoomofo · Post by **daewoomofo** » Mon Aug 13, 2007 10:59 pm

the car has to be turned on and off (dont quote me on this) like 50 times before it clears the stored codes.

jidasas · Post by **jidasas** » Mon Aug 13, 2007 11:01 pm

I know that's what everyone tells me but when I did this I was coming home from work and the light came on for maybe a mile or two and went back off...I stopped in at advance and had the codes read and it came up with nothing. It took me doing that like ten times before it finally registered a code for cylinder three misfire.

Jimmy

Dillon · Post by **Dillon** » Sun Aug 26, 2007 10:48 pm

Well gay autozone wont scan it unless the lihht is on.... I HAVE NO CLUE WHY.

I do however have some new info. It only comes on when i start the car with the a/c on or shut it off with the a/c on. What in the world could that mean lol?

Spider · Post by **Spider** » Sun Aug 26, 2007 11:32 pm

Dillon wrote:My check engine light go's on and off like every other day, but by the time i get to autozone its off.

How about your own code reader and catch CEL when it happens ?

http://stores.ebay.com/DIYDiagnostics

ENHANCED OBD II 2 OBD2 TROUBLE CODE READER SCANNER TOOL
* FASTEST SHIPPING! READ & CLEAR ENG. CODES, READ VIN #'s
* US $29.99
* US $32.99 Buy It Now

Photo of above, (I bought one of these, works good too) :
http://thumbs.ebaystatic.com/pict/110162902237_1.jpg

kinkyllama · Post by **kinkyllama** » Mon Aug 27, 2007 12:26 am

Spider wrote: How about your own code reader and catch CEL when it happens ?

http://stores.ebay.com/DIYDiagnostics

ENHANCED OBD II 2 OBD2 TROUBLE CODE READER SCANNER TOOL
* FASTEST SHIPPING! READ & CLEAR ENG. CODES, READ VIN #'s
* US $29.99
* US $32.99 Buy It Now

Photo of above, (I bought one of these, works good too) :
http://thumbs.ebaystatic.com/pict/110162902237_1.jpg

How well does that $30 ebay one work though?

Spider · Post by **Spider** » Mon Aug 27, 2007 12:47 am

.........gave me the same code that AutoZones $130.00 (usd) one did.
(At AutoZone I had to 'buy'/put the code reader on my credit card, go out to the 105 degree parking lot, kneel in the melting blacktop, read my code, bring the reader back in the store and wait in line 10 minutes for them to credit the 'return' back to my account.)
[I do appreciate their service though...

]

The only difference ?
The AutoZone code reader :

1) give me the code number. (forgot what it was now)
2) crawled the message..: "misfire on cyl #3" across the bottom of the screen.

My 30 dollar E-bay code reader gave the same code but did not crawl the message (I had to look it up in the provided manual)

Hope this helps ?

P.S. I did have a bad plug wire on #3, replaced the whole set, with a new AutoZone set.

Dillon · Post by **Dillon** » Wed Sep 05, 2007 7:55 pm

Ok the code was PO342.

It says that the voltage signal from camshaft position sensor "A" is too low for the current engine operating conditions.

Im thinking its the cam shaft sensor but idk.

What do you guys think?

daewoomofo · Post by **daewoomofo** » Wed Sep 05, 2007 9:16 pm

you guys have shitty autozones in your area's. all of the ones near me will check it for free, them selfs even if the light is off. thats what they are suposed to do, if they say you need the light to be on or that they cant scan a daewoo, tell them they are full of shit and to get their ass's out there and scan your damn daewoo! but yeah that sounds like it could be a bad cam sensor.

Dillon · Post by **Dillon** » Thu Sep 06, 2007 8:24 pm

where can i get a sensor at. I searched all over the internet but im having trouble. Alot i found out it was a recall and every daewoo.... go figure

daewoomofo · Post by **daewoomofo** » Thu Sep 06, 2007 9:28 pm

www.daewoous.com should have it

REY04 · Post by **REY04** » Fri Sep 07, 2007 1:24 am

if its lights op briefly and then goes out again, it has no significance based on the manual.

The original daewootech forum

Check Engine Light IS CRAZY

Check Engine Light IS CRAZY

Re: Check Engine Light IS CRAZY

Re: Check Engine Light IS CRAZY

The 30 dollar OBD 2 code reader........