blinking SES code

**badazta** · 06-04-2008, 03:59 PM

I went for a ride the other day and had to cross a puddle of water that covered the road, (I was on a one way street, no other option). I went thru it slowly, and must have got something wet because now I'm throwing a blinking SES code. I was told it ment there is a misfire, I changed the plugs and it's still doing it. Just wondering what I might of got wet or where to start looking, Thanks,B

**Cutlass** · 06-04-2008, 05:39 PM

yeah the blinking SES is a misfire. Usually the plug wires and coils get wet and cause the misfires. It may go away if it dries out. Otherwise try a good set of plug wires

**badazta** · 06-04-2008, 07:30 PM

I have the msd wires. are you thinking it could only be linked to coil/plug/wires? That would narrow it down. Thanks

**itsfess** · 06-04-2008, 07:33 PM

i thought that a blinking light meant catalyst damage that may or may not be a misfire.

**Y2KPewterSS** · 06-04-2008, 07:51 PM

Check your 02 sensors.

**mrr23** · 06-04-2008, 08:38 PM

blinking SES is misfire.

**Cutlass** · 06-05-2008, 03:06 AM

Yeah a blinking SES indicates a catalyst damaging misfire.

**Cutlass** · 06-05-2008, 03:08 AM

Originally Posted by badazta

I have the msd wires. are you thinking it could only be linked to coil/plug/wires? That would narrow it down. Thanks

Most likely but I can't say its definitely your problem.

**blue02Z** · 06-05-2008, 04:05 AM

if the pcm thinks your engine is gonna send raw fuel into the exhaust therefor damaging your cats it will throw a blinking SES code to tell you to hurry the hell up and fix it, throw a scan tool on it to see if you can narrow it down to a particular cylinder. its prolly a random misfire tho, infamous p0300

**badazta** · 06-05-2008, 05:38 PM

I was thinking 02s since that should have ben all that got wet. I have no cats. It does have a exhaust pop every once in awhile.

**Cutlass** · 06-05-2008, 05:53 PM

Go get the code read.

**badazta** · 06-06-2008, 08:49 PM

Read the code it was a p300, a MAP sensor code, and a 1133 or something. the 1133 was an 02 sensor code. I have ben throwing the MAP code for awhile and I tracked that down to a bad ground. the 02 code came from a bad sensor on the pass. side that was dented pretty good (car is lowered 2 1/2 inches and the tubular kmember lowered it another inch) I think I picked up a rock somewhere. Swapped the 02 out a the car runs good again. No codes. Thanks to all that helped, B...

**0rion** · 06-06-2008, 09:27 PM

Originally Posted by badazta

Read the code it was a p300, a MAP sensor code, and a 1133 or something. the 1133 was an 02 sensor code. I have ben throwing the MAP code for awhile and I tracked that down to a bad ground. the 02 code came from a bad sensor on the pass. side that was dented pretty good (car is lowered 2 1/2 inches and the tubular kmember lowered it another inch) I think I picked up a rock somewhere. Swapped the 02 out a the car runs good again. No codes. Thanks to all that helped, B...

p0300 is a random misfire code......glad you got it fixed though.

**badazta** · 06-07-2008, 08:36 PM

Correct, I worded it wrong, it was a p300(misfire code) also a MAP code and a 02 code. Thanks again for all the help. Heading to Cordova ILL for a track tune Saturday nite. Just if anyone out there that wants to meet up.