Two weeks ago I had my oil changed by mechanic. Drove over 700 miles a week later with no problem. I have had an appointment set up for the 953 campaign for two weeks. Last week I had an engine noise on my way to work one day that sounding like chirping and I honestly thought a bird might have been in the engine. It stopped and hasn't reoccurred. This weekend my A/C stops working with no prior sounds or warning- would appear to be the compressor. Tonight reversing into my driveway the engine starts making an uneven metallic sound (sorry not sure what engine knocking is supposed to sound like) on same side of engine as compressor and oil pan etc. Is this what this campaign is supposed to detect and I already have the problem symptoms appearing? Car just hit 5yr mark with 63K. No problems until now and I always use full synthetic. I am thinking about calling the dealer in the morning and seeing if I can drive the car right in. Thoughts?
Drive it in there clanging and banging, should make diagnosis easy.. lol
But seriously, only drive it if you feel confident you will not be in or cause an accident and can be safe. If you do NOT feel safe driving it, then have it towed in. If you had AC issues first, and are still having AC issues, it could just be compressor issues and not full engine failure. If a bearing or part in the compressor went bad the constant turning of the pulley could cause engine vibration as well and may not be engine bearing. The chirping could be the belt slipping on the pulley and lends more to an AC compressor type issue than engine failure.