Computer Diagnostics and Tuning Technical discussion on diagnostics and programming of the F-body computers

odd OBDII code problem

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Old 06-21-2003, 09:30 AM
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Unhappy odd OBDII code problem

hello, please help if you have seen this problem.

i have been throwing a few codes under high boost, 97. when i go to pull the codes with a snap-on scanner, i get codes, but they "scroll", not just sit there as they normally do.

please help, thanx
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Old 06-21-2003, 09:33 AM
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oh-yeah. it is intercooled and a blow through maf.
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Old 06-21-2003, 12:27 PM
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I used the Snap-on scanner very often as well, but I don't understand what you mean by scroll. Did you go to see the history of the code? To help we need to know the codes.

Intercooled and blow through MAF should be fine. I have seen many people have done this and the intercooling is even better since the MAF is temperature sensitive as well.
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Old 06-21-2003, 05:44 PM
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as i view the codes, the # with a brief description, they move. kinda like turning the scroll wheel, but i'm not.

the actual codes are not my concern right now, i need to know why they are scrolling first, their not supposed to do that. then i will fix the code itself.

the computer itself used to be mounted in a plastic mount. now it is mounted on the inner fender(grounded case). i'm thinking maybe there is a ground loop causing the scrolling ? or maybe a weak ground.

i haven't driven it much, have belt issues. but i can drive it with no SES light. but as soon as it goes up in boost the SES comes on, and stays on.

it seems i can't do much of anything without a goofy problem poping up . but it does run VERY well
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