Looking at buying this 2004

[YukonLover]

Hey guys, found a relatively clean and affordable 2004 XL. Its a few hours away from me. Its got a 5.3L and about 240K. The idle RPM along with the IDLE and under load OIL PSI readings. These shown videos with readings are all from the seller and gauges I haven't touched the truck yet. I realize gauges can be wrong, especially ones that are 20 years old. But the readings are still there, and the motor does sound loud. These motors are all low idlers, ive never seen an idle above 600, most around 400-500 range. This dude is sitting at like 900 at idle. Oil psi at idle is like normal high, warm is like 55-60 PSI, undler laod its dropped to 45 and average of 50-65 PSI. He was at idle in one clip, in park raised the RPMS, and the oil sending unit displayed 80 PSI and dropped after he left off the gas.

I am afraid with high idle, and high RPM we could be looking at blocked oil passages or lifter issues. But I don't hear the lifter in the videos. I attached the links to the videos, what do you guys think?

https://drive.google.com/file/d/1XZml7uM2OFDhVXeNUJPH3LPy-fPsUJfk/view?usp=drive_link

https://drive.google.com/file/d/1XbjDoT-_86QU0ilKxSMoSBQKXUKNmNlP/view?usp=drive_link

https://drive.google.com/file/d/1Xbz7Ie796sVSVJaOTOgPxz8lp9fskFt8/view?usp=drive_link

https://drive.google.com/file/d/1XlvgeWTy8prIhGWswhQ9kpvXFxWQ6TXz/view?usp=drive_link

https://drive.google.com/file/d/1XpbtdyTXLk5FHD3GmNJXBT_dgYiiDMMO/view?usp=drive_link

 

[GMCChevy]

I cant access the videos. Its normal for oil pressure to be lower warmed up and at idle and fluctuate with rpm and the dash guage isn't as accurate as a mechanical test guage. The big issue is if it has lifter tick and oil pressure light on or flickering at idle.

 

[YukonLover]

Sorry. I fixed the permissions on the video. One of them will show you the PSI gauge registers at a pretty high 80PSI and holds. I have NEVER seen a gauge that high in my life. I know as oil gets warmer the PSI will drop as the detergents wear down and the viscosity changes. But this gauge is WILD. I have never seen a truck that idles at 55/60 warm. Most I've seen warm idle is about 45. My other engines have different values, but 10 PSI difference, this one is double, like 25 PSI difference. Let me kno what you think. I told this dude tomorrow I may come look. We've been planning this since before Christmas because he was out of town for a few weeks.

I cant access the videos. Its normal for oil pressure to be lower warmed up and at idle and fluctuate with rpm and the dash guage isn't as accurate as a mechanical test guage. The big issue is if it has lifter tick and oil pressure light on or flickering at idle.

 

[Scottydoggs]

my 05 is 60 cold start, 40 hot idle, will hit 70 psi when hot wot driving down the road and stay there till i lift. so the oil pressure is just fine.

 

[strutaeng]

Is the truck in a cold area? I recently noticed my 06 Suburban idles kinda high in the mornings when it's cold, but haven't actually paid attention to the tach. Once I put it in gear it drops. I think that's kinda normal when they are cold.

I did bump up the idle a bit on the tune via HP Tuners. I installed a mild cam last spring when I freshen up my engine.

I wouldn't really be too concerned about the oil pressure readings TBH. I mean, doesn't seem like it's got low oil pressure, which is the biggest concern with an older/higher mileage engine.