SES ghost!
Thread Starter
Racer
Joined: Apr 2004
Posts: 298
Likes: 1
From: Springfield Missouri
SES ghost!
Where's my code??
I have an occasional SES lightup when driving. I check the codes by doing the pin cross, and it shoes up with just the "12 clean"
The car surges under WOT, has a miss, smells like it's running rich, and is lacking horsepower.
SES light usually comes on when crusing on the highway.
can someone give me an idea on how to troubleshoot this? I'm new to the whole computer powered car thing so any advice would be appreciated!
I have an occasional SES lightup when driving. I check the codes by doing the pin cross, and it shoes up with just the "12 clean"
The car surges under WOT, has a miss, smells like it's running rich, and is lacking horsepower.
SES light usually comes on when crusing on the highway.
can someone give me an idea on how to troubleshoot this? I'm new to the whole computer powered car thing so any advice would be appreciated!
Pro
Joined: Sep 2001
Posts: 542
Likes: 1
From: Stuck in the 80's
What year is it? If the light is coming on and going off it is an intermittent failure of some sort, regardless the ECM should save the code, unless you lose power to the ECM. Since you are new to computer controls I'll assume you don't have a scan tool.
Thread Starter
Racer
Joined: Apr 2004
Posts: 298
Likes: 1
From: Springfield Missouri
It is a '93 and you are correct - I have no scantool.
the SES light goes on only with crusing on the highway or idiling for extended periods.
other info on my vette includes ( auto trans, recently rebuilt, 147K miles, fuel filter changed recently, 43psi fuel pressure, 550 rpm idle, temps are good across the board.
the SES light goes on only with crusing on the highway or idiling for extended periods.
other info on my vette includes ( auto trans, recently rebuilt, 147K miles, fuel filter changed recently, 43psi fuel pressure, 550 rpm idle, temps are good across the board.
Pro
Joined: Sep 2001
Posts: 542
Likes: 1
From: Stuck in the 80's
Couple of things come to mind. If the ECM is going out, it could be the cause of the problem and possibly not hold any trouble codes. EGR problems sometimes appear at cruise, but I don't think they still use EGR in 93. If you're coming to the St. Louis area give me some advance notice, if I can I'll hook my scan tool to it and maybe we can figure something out. I'm in the west suburbs, not too far off I-44.
Cruising
Joined: Jan 2005
Posts: 12
Likes: 0
Hi guys
Do you know where can I find info about SES codes ,and some help of GMC Sonoma 1990?
The attention light (same as emergency brake light/handbrake light) blinks fast,10 times ,than it stops for 2 sec and it begins to blink 10 times again,
The SES light comes on when i ride fast,full throttle,I know its not a vette but since im a 1993 LT1 convertible owner,im excpecting you to help me
Thanks in advanced
Gal
Do you know where can I find info about SES codes ,and some help of GMC Sonoma 1990?
The attention light (same as emergency brake light/handbrake light) blinks fast,10 times ,than it stops for 2 sec and it begins to blink 10 times again,
The SES light comes on when i ride fast,full throttle,I know its not a vette but since im a 1993 LT1 convertible owner,im excpecting you to help me
Thanks in advanced
Gal
Melting Slicks
Joined: Jul 2003
Posts: 2,194
Likes: 0
From: Tempe AZ
Originally Posted by Gal r1
Hi guys
Do you know where can I find info about SES codes ,and some help of GMC Sonoma 1990?
The attention light (same as emergency brake light/handbrake light) blinks fast,10 times ,than it stops for 2 sec and it begins to blink 10 times again,
The SES light comes on when i ride fast,full throttle,I know its not a vette but since im a 1993 LT1 convertible owner,im excpecting you to help me
Thanks in advanced
Gal
Do you know where can I find info about SES codes ,and some help of GMC Sonoma 1990?
The attention light (same as emergency brake light/handbrake light) blinks fast,10 times ,than it stops for 2 sec and it begins to blink 10 times again,
The SES light comes on when i ride fast,full throttle,I know its not a vette but since im a 1993 LT1 convertible owner,im excpecting you to help me
Thanks in advanced
Gal
Rather than hijack this on topic thread with an off topic question, why not try posting it in the "Other Cars" section under "Off Topic"?
Pro
Joined: Jul 2004
Posts: 632
Likes: 0
From: Smithfield VA
Originally Posted by gbody5
Couple of things come to mind. If the ECM is going out, it could be the cause of the problem and possibly not hold any trouble codes. EGR problems sometimes appear at cruise, but I don't think they still use EGR in 93. If you're coming to the St. Louis area give me some advance notice, if I can I'll hook my scan tool to it and maybe we can figure something out. I'm in the west suburbs, not too far off I-44.
Pro
Joined: Sep 2001
Posts: 542
Likes: 1
From: Stuck in the 80's
I guess they do then, must be later 90's with the Vortec engine that they did away with EGR. I'll be here this weekend if you want to bring it up we can put my scan tool on it and see whats going on.
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