I have a 1990 RS 305 TBI,and having a problem with the ses light...while driving around town sometimes ill get a slight surge from the car like its going to die out...and the ses light will come on for less than a min and then go out and then the car will run fine...when I get home to retrieve any codes, is were I have the problems...when I turn the key on "engine off" the ses light will go on for about a second then shut off and not come on anymore...so I cant retrieve any codes using the aldl A&B jumpers...If I wait from 20 min to about a hour ill be able to turn the key on and the ses light will come on for a sec then off for a sec then back on like normal...but when I am able to check for codes all I get is 12 12 12...I would like to find out why it surges and the ses light comes on and try to retrieve a code telling me what the problem is...anyone out there that can help me out.

 

anybody out there that could help me???

 

If the check engine comes on and it's a "hard" failure, it should store the code in the memory. It's strange that it doesn't do it. Wait until it happens a few more times and try to pull the codes again, hopefully there will be a code stored in the memory then.

If you filled out your profile with more information (for example your location), you might get lucky and find a closeby member with a laptop and datalogging equipment. You could diagnose the problem that way.
If you were close to me, I'd help you look at it.

You can also try AutoZone, maybe their code reader could read the codes even if the SES light flashes only 12. One last resort would be a "mechanic". *shudder* But like I said: last resort.

Lou

 

I have a 1990 RS 305 TBI,and having a problem with the ses light...while driving around town sometimes ill get a slight surge from the car like its going to die out...and the ses light will come on for less than a min and then go out and then the car will run fine...when I get home to retrieve any codes, is were I have the problems...when I turn the key on "engine off" the ses light will go on for about a second then shut off and not come on anymore...so I cant retrieve any codes using the aldl A&B jumpers...If I wait from 20 min to about a hour ill be able to turn the key on and the ses light will come on for a sec then off for a sec then back on like normal...but when I am able to check for codes all I get is 12 12 12...I would like to find out why it surges and the ses light comes on and try to retrieve a code telling me what the problem is...anyone out there that can help me out.