u/avery418

I have a 2005 Chevy Suburban here. My oil pressure was chilling at around 40psi and today when my gf was driving it, it dropped to 0 psi (Yes there’s oil) The pressure doesn’t seem to fluctuate at all.

I know a common issue is the oil pressure sensor. I think the video I provided will clearly show it’s not that.

Another culprit the internet is saying is the pickup tube o-ring. However, their symptoms seem to be low oil pressure, not none. This is the first thing I’d like to try to replace.

What do the intelligent people of Reddit think? Any help is appreciated.

I have a 2009 Chrysler Sebring with the 2.7l, 127k miles. A few months ago the PCM fuse kept blowing while driving. There ended up being an internal short in the alternator on the charging circuit that goes to the PCM. I replaced the alternator and battery, and the fuse hasn’t blown since.

About a day after I replaced the alternator and battery the battery light came on. The video above shows the voltage oscillating from 12-14v. While driving at around 2k RPMs it’ll only oscillate between 13.2-14v ish, sometimes it changes. The lights dim and blower motor loses RPM with each oscillation.

I made some simple attempts to try and fix it. I grounded the alternator straight to the battery, I replaced the connector that goes to the alternator since it looked rough, I took the alternator to get tested at autozone (tested good), and I replaced the belt tensioner.

Google and other resources keep saying the voltage regulator is the issue. The voltage regular for these is of course in the PCM. I would like to know what the random people on Reddit think before I drop $200 on a PCM.

I’ve made several 8 hour trips in this car over the past 5 months in this condition and haven’t needed to jump it once.

Thanks in advance.