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Forced Induction All questions and problems regarding Superchargers, Turbos, NOS, ZEX, intercoolers, water injection, etc.

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Old 02-03-2005, 12:47 AM   #11
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Well i did that and i see any numbers at all :/ that wire is yellow right?
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Old 02-03-2005, 12:53 AM   #12
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Quote:
Originally Posted by brandon4545
well what happens is that i hear the whining of the supercharger and the boost gage goes up and all but the car starts to sounds like it is going to stall and its gets all jerky, just like you said, i have no idea what any parts of this car are at all and i cant see your picture. I dont want ot have to take this to GM to get it fixed because i just spent all my money on it
the problem is NOT your supercharger as your WOT the SC is building air pressure (i bet the gauge reads higher than it ever did before!) till it cant anymore, the problem is more than likely a lack of exhaust flow (would make a wierd sound) possibly broken/plugged cataltic converter/ or a severly colapsed inner tube on the double wall downpipe. which will not let the engine rev/breath.

real simple thing fer ya to test, jack up the front of the car and put on stands then on the exhaust downpipe take off the two 15 mm bolts holding the downpipe to the rear manifold then start it up i bet it will run lots better, take it for a drive

this is why backpressure is a bad thing in exhausts
i have seen the same problem in two SC 3800'* (one buick regal GS and the other a GTP-he crushed his cat going to fast over a bump or somethin-squashed flat!)
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Old 02-03-2005, 01:04 AM   #13
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Quote:
Originally Posted by brandon4545
Well i did that and i see any numbers at all :/ that wire is yellow right?
The terminals are visually numbered or anything, you gotta count over to the one you need. I don't remember what they are because I'm not lucky enough to be able to do that trick lol.
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Old 02-03-2005, 01:07 AM   #14
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Ok let me fix this i founf a yellow wire that said A dn B on ti and i pulled it apart (is it a wire or a box?) and i put the paper clip in and no numbers came up on the dash.
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Old 02-03-2005, 01:18 AM   #15
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Number aren't gonna show up on the dash. The Service Engine Soon Light will flash. Under the dash almost in between the gas pedal and brake, closer to your knee, you'll see a plug in for a scan tool.....That'* where you put the paper clip into it'* respective terminals to put the cars computer into "Diagnostic Mode" When you do that, the Service Engine Soon light should flash once......twice. Meaning Code 12 which means that the cars computer is sucessfully in "Diagnostic Mode."

Here'* an example. This is what will happen when you plug that paper clip into the connector and turn the key ON....NOT RUN:

Flash......Flash Flash= Code 12 *This will happen 3 times before Flashing the codes out, and after flashing the codes (when it'* done)*

flash flash......Flash Flash Flash Flash Flash= Code 25 (Has no meaning I don't think, I just made it up.)

Flash........Flash Flash Flash Flash= Code 14 (Another Made up code)

Assuming you only have 2 saved codes in the engine computer above, it will flash Code "12" 3 times again to inform you that the code flashing process is complete. If you think you may have miss counted any of the flashes, leave the key on, and the process will start all over again. By flashing "12" 3 times, then the codes, and then "12" 3 times again when done.

Hope this helps.

Damn this is tech info worthy.....lol
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Old 02-03-2005, 01:37 AM   #16
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Ok, Well i thank you sooo much for clearing that up for me all it did was tell me code 12 the whole time so does that mean someting good?
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Old 02-03-2005, 01:39 AM   #17
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No problem......It means that you have no codes stored in your PCM.
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Old 02-03-2005, 01:43 AM   #18
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Brandon, put your location in your profile. And do a full tuneup. Plugs, wires, air filter, fuel filter, PCV valve, etc.
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Old 02-03-2005, 01:46 AM   #19
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ok , well the car just got a tune up about 1 month ago., i did hit some big speed bumbs today and it sound like part of the car hit the ground, sound like a problem?
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Old 02-03-2005, 01:53 AM   #20
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I got 20:1 that you smashed your catalytic converter then or pinched your exhaust pipe damn near shut....That'* gonna be expensive......Take a look at the exhaust pipe and inspect for crimps, kinks, and bends that aren't supposed to be there. (Where ever the most scrpe marks are)
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