Blinking "Service Engine Soon Light"??

**Tampa T/A** · 01-05-2011, 03:23 PM

Hello everyone, a while back I posted the code that was making my light come on. Passanger side cat failure. Since im getting ready to pull them soon, I did not get it fixed. But since then..... every so often the service engine light blinks sometimes fast, sometimes slow. As if it were saying " hey ASSH@LE!! Look at me!!" So I am going home here soon & will check to see if there are any more new codes. I do have a oil pan gasket leak to fix very soon but I dont think that would make the light blink like that. Is this normal or has anybody else seen this before?

**0rion** · 01-05-2011, 03:37 PM

blinking light can be misfires. Is the car missing at all? I would get it scanned again and see what codes show up.

**Tampa T/A** · 01-05-2011, 03:44 PM

No.... runs great!! I have a Hypertech tuner so I can check codes myself. I will follow up with you though.

**Y2KPewterSS** · 01-05-2011, 06:48 PM

The flashing SES light means misfires, according to the owners manual. The only time I ever had a flashing SES light was due to misfire. Even though you may not be noticing anything, if you got a flashing light, I would be real careful about driving it until you get it resolved.

**Mr. Luos** · 01-05-2011, 06:58 PM

Flashing is multiple random misfires. It is also an indicator to not drive it. More serious issue when flashing.

Pull codes. Probably has to do with that cat/O2 issue.

**Tampa T/A** · 01-15-2011, 10:26 AM

OK guys, sorry it took so long to get back with you all. Had to dig out the tuner from storage so I could check for newe codes. So here they are: P0171 Sys too lean Bank 1,
P0174 Sys too lean Bank 2, P0300 Random/Multiple Cylinder Misfire Detected, P0430 Catalyst Sys Efficiency below Threshold Bank 2.
So I have been driving it a little bit due to not wanting to ride the GSXR in 30 degree weather. My idle has been fluxuating a little bit. Sometimes dropping to 500rpm. I have things set up for Feb. 7th to change my oil pan gasket, install long tube headers & ORY,new plugs & wires. Then it looks like I will be visiting our sponser TampaTuning for a tune. Can someone help me translate these codes & will this work I have done to the car fix my problems? I also have a crack/hole in the vacume line coming off the passanger side of my throttle body. Dealer wants to sell me the whole line for over a 100 dollars. Is there a cheaper way to fix this? Why would the car be misfireing? The SES light only blinked during aggressive driving. Really need some advice here & the car is now parked till Feb. 7th. Thanks

**Cutlass** · 01-16-2011, 03:37 AM

Your cracked PCV hose could be most of your problems there. Here's a cheaper fix idea from one of our stickys in the Gen Help forum.
PCV Valve Recommendation / Housing Modification

Another alternative is to convert to a LS6 style PCV system with a catch can and new valley cover.

**Tampa T/A** · 01-16-2011, 07:24 PM

Thanks Cutlass, I knew there was a sticky somewere.

**1998 T/A** · 01-17-2011, 09:29 AM

Solution?

**Tampa T/A** · 02-05-2011, 05:11 AM

Well, I did the PCV valve housing modification. It all fits together really well & has cleared three of my DTC codes. So it no longer misfires & is no longer running lean. Great write up on that modification. Spent less than 20 bucks. I will post a pic this weekend.

**ls1camino** · 02-06-2011, 04:49 AM

I would also suggest changing your plugs because they may have been damaged by the misfiring...happened to my GTP after a leaning condition caused misfiring...here is the result:

The tips are gone from four and the arc is gone from two.

**Green95TA** · 02-11-2011, 07:42 AM

What about a solid "Service Engine Soon" light in a 95 TA?

**ls1camino** · 02-12-2011, 07:48 AM

Originally Posted by Green95TA

What about a solid "Service Engine Soon" light in a 95 TA?

Means go to Auto Zone and get your car scanned for codes.

**0rion** · 02-13-2011, 03:23 AM

Originally Posted by Green95TA

What about a solid "Service Engine Soon" light in a 95 TA?

is your car obd1 or obd2? OBD1 will be a 12 pin connector. If it is you can jump the A-B pins with a paper clip and count the flashes to get the code. If it's OBD2 you'll have to use a reader.

OBD1 pinout

jump the A-B pin and there will be a series of flashes (first number) pause series of flashes(second number).