2004 Lincoln Navigator Low Oil Pressure Light

Check the oil pressure with a mechanical gauge if normal replace the oil pressure switch abnormal could mean oil pump and engine bearings

[quote:32fe3c020b="rasmataz671"]Check the oil pressure with a mechanical gauge if normal replace the oil pressure switch abnormal could mean oil pump and engine bearings[/quote:32fe3c020b]

Oil pump or engine bearings...are these expensive repairs? Should I drive the vehicle to the repair shop or have it towed. We just purchased the used vehicle and had the oil changed immediately and just had the compressor replaced on the front suspension.

This rattling noises does it sound more like a ticking/tapping noise is it coming from the upper end of the engine if so could be lifter/valve problems.

[quote:e0d9da50fe="rasmataz671"]This rattling noises does it sound more like a ticking/tapping noise is it coming from the upper end of the engine if so could be lifter/valve problems.[/quote:e0d9da50fe]

The sound is a LOUD tapping and lasts for about 2 to 3 secs. I thought that it may have been the fuel grade that I put in it which was 87 instead of the 93 which I will put in from this point forward. And yes the noise seems to be coming from the upper end of the engine. I want to get it to the dealership first thing Monday...can you offer any suggested terms I should use to explain what the concern may be? Also note that the engine seems to run like a champ.
Thanks a ton for your input..

Sounds more like a lifter leakdown problem-

[quote:f731ba716b="rasmataz671"]Sounds more like a lifter leakdown problem-[/quote:f731ba716b]

What exactly is that and what would it stem from? I just had the Compressor for the suspension replaced on friday morning..Would it stem from that activity?