Check the fuse. When the fuse blows, the ALDL connector won't hook up with the scanner.
As for you driveability problem, always check ignition first, then fuel, then sensors.
Check plugs/wires/coils for misfiring cylinder.
And cleaning your injectors don't work. It only cost you money. In fact, manufactures advise against this because the deposits build up over time, and if you have the injectors cleaned, they often begin to leak.
This could very well be your problem. If your injectors are leaking, you'll get the problem you're describing.
Also, check the fuel pressure regulator. Pull the vacuum hose and check for the presence of gas. If you find/feel/smell any, replace it.
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Thursday, November 18th, 2010 AT 5:04 PM