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SES light Blinks then stays on Help.

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Old Aug 21, 2005 | 08:39 PM
  #1  
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Default SES light Blinks then stays on Help.

Can some one please tell me what the problem is ?
This is what I have.
A stock motored / auto / 00 trans am with a T-76 at 9# boost. It made 429 RWH and 500 RWT . It runs great, But when I am running along at 60 mph and floor it it runs up to 100 or so and then the SES light blinks. So I let off and it goes out. It did this 3 or 4 times and now it Is on all the time. Any help would be great. Thanks.
I live 2.5 hours away from my tuner.
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Old Aug 21, 2005 | 09:05 PM
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It has to be scanned. Autozone does it for free.
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Old Aug 21, 2005 | 09:33 PM
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Originally Posted by 2001WS6Vert
It has to be scanned. Autozone does it for free.
But not usually at 100 mph.
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Old Aug 22, 2005 | 03:06 AM
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the computer will store the code untill it is cleared.
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Old Aug 22, 2005 | 04:55 AM
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blinking ses light usually means missfire
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Old Aug 22, 2005 | 06:09 AM
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Thanks , I'll have the dealership scan it.
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Old Aug 22, 2005 | 07:03 AM
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Originally Posted by red90cobra
blinking ses light usually means missfire
Thats what I have heard as well. Get it scanned ASAP
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Old Aug 22, 2005 | 06:04 PM
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I got it scaned and It was a
PO300 Random cyl missfire.
PO153 02 Signal slow bank 2 sensor 1
P1133 HO25 B1-S1 Insufficent switching
P1153 Ho25 B2-S1 Insufficent switching
I am new to the computer cars so Is this a Bad thing. The car runs good. Even better today with the cold air.
Thanks.
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Old Aug 22, 2005 | 06:10 PM
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sounds like you need to do a CASE relearn and replace your bank 1 o2 sensors.

Double check/inspect your plugs and plug wires too
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Old Aug 22, 2005 | 06:18 PM
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Will it hurt to drive it ?
Did I screw up the sensor by adding 7 gallons of race gas to it ?
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Old Aug 22, 2005 | 06:55 PM
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Leaded race fuel can definitely screw up stock O2s.
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Old Aug 22, 2005 | 07:21 PM
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depends on what kind of race gas you put to it. if it was leaded as most rase gases are you probably fried your o2's and you car is running in limp mode. after you get it fixed look into Torco race fules they offer unleaded shipped to your door. its good stuff that you could definatly use. also what kind of plugs are you using. you might need to replace your spark plugs with something thats gapped a little less like the NKG's tr6's. if its just in limp mode you can drive it but i wouldn't frive it hard till you get it fixed. rather be safe than sorry.
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Old Aug 22, 2005 | 10:47 PM
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sounds like you put leaded gas in it fried your o2's. the blinking SES light is a misfire, start with changing the O2's and go from there
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Old Aug 22, 2005 | 11:17 PM
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Leaded race gas I'm assuming is what you added.. That'll always toast catalytic convertors and O2 sensors.
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