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P0263 most likely means fuel injector has failed, I would recommend replacing them all. P0649 is related to cruise control light circuit, you would want to follow orange/blue wire that goes from cluster to pin 9 of PCM to find damage or run a new wire. Let me know if you have questions, thanks.
You can use capable scantool to do injector buzz test and also do resistance test of injectors to verify they are the problem before replacing.Verify the fuel pressure is 45-60 PSI. If the fuel pressure is low, address the fuel supply problem. Also with the fuel pressure gauge connected, open the bleed valve on the gauge to inspect the fuel for any air bubbles. If found, suspect possible injector or injector seal problems allowing combustion gas into the fuel system. If the fuel pressure is OK and the fuel not aerated, check compression on cylinder 1 looking for at least 350 PSI. If the compression is low, inspect the turbo and air inlet for any signs that debris may have been pulled in bypassing the air filter. Address the engine mechanical problem as needed and recheck operation. If the compression is OK but the code for cylinder 1 keeps returning, suspect a faulty injector on that cylinder. Here is also testing instructions from manual, please do not forget tor ate answer. Thanks.
P0263 Cylinder 1 Balance / Contribution - Manual and Automatic Transmission
Possible CausesSetting Conditions
Engine running; and the PCM detected that the acceleration rate of the crankshaft for Cylinder 1 was less than a calibrated amount. Perform the power balance test to verify the cylinder contribution. Disregard any codes set as a result of the power balance test. Single or inconsistent non-contributing power cylinder traces may be caused by a natural variation in a crankshaft speed and should be ignored.
I'm happy to help and most people get overwhelmed with too much. Let me know if there is anything else I can do, thanks.
No problem, let me know how it turns out. Thanks again and please do not forget to rate answer.
Well keep me updated, I am not compensated for time or information until rating is done. Thanks.
I appreciate it, I'll be here if you run into questions.