Time to change oil pickup o-ring?

[cjmcglaughlin]

(2005 Tahoe 4.8 4x4) Hey y’all, this weekend I’m about to finally try to do my rear main seal and wondered while I was working on it if I should also do my oil pickup tube o-ring as I know those commonly go bad. Im aware the work doesn’t really overlap but I figured it might be worth it to make it one bigger project. My oil pressure is about 45 PSI cold idle, 30-35 hot idle, and between 40-50 while driving (according to dash guage). Should I go ahead and change it?

 

[wjburken]

I would. If your aśś deep already doing the rear main seal, might as well drop the pan and take care of other stuff as well. Even if you don’t have an issue, knowing that you have a fresh o-ring is good insurance.

 

[Fless]

I would. If your aśś deep already doing the rear main seal, might as well drop the pan and take care of other stuff as well. Even if you don’t have an issue, knowing that you have a fresh o-ring is good insurance.

x2.

 

[Marky Dissod]

(2005 Tahoe 4.8L 4x4) Hey y’all, this weekend I’m about to finally try to do my rear main seal and wondered ...
While I was working on it, if I should also do my oil pickup tube o-ring? as I know those commonly go bad ...

Does this even apply to the V8s that are sure of themselves?
Always thought this only applied to the V8s that tried to be V4s?

 

[Sam Harris]

x2.

X3

 

[Sam Harris]

Does this even apply to the V8s that are sure of themselves?
Always thought this only applied to the V8s that tried to be V4s?

Absolutely it does.

 

[wjburken]

Does this even apply to the V8s that are sure of themselves?
Always thought this only applied to the V8s that tried to be V4s?

The o-ring on the pickup tube isn’t an AFM only related issue.

 

[Mudsport96]

I would do the oring for sure. I did the Silverado on ramps, in winter in a non insulated garage and took 2 days. But it was 20F and part of one day was washing the pan out at work( bonus of having a high pressure wash cabinet at your job).

I wish I would have been able to get the pump relief spring shimmed. But that requires pulling the front cover.

Oh, if you do pull the pan, take pictures! Always fun to look at those!

Before washing. Not bad for 395k miles and never being opened.

 

[RST Dana]

Does this even apply to the V8s that are sure of themselves?
Always thought this only applied to the V8s that tried to be V4s?

The oil ring doesn’t know if it v8 or v4. Its only job is to make sure the sucking happens the correct way.

 

[cjmcglaughlin]

Alright thanks y’all, I’ll do it soon. One other question I had is if I can reuse a new oil pan gasket. I had the pan gasket done (by a shop) last October and didn’t think at the time to tell them to replace this o-ring. So can I reuse that gasket or get a new one?

 

[wjburken]

Alright thanks y’all, I’ll do it soon. One other question I had is if I can reuse a new oil pan gasket. I had the pan gasket done (by a shop) last October and didn’t think at the time to tell them to replace this o-ring. So can I reuse that gasket or get a new one?

For the price of a new gasket, I’d replace it.

 

[Mudsport96]

The oil ring doesn’t know if it v8 or v4. Its only job is to make sure the sucking happens the correct way.

............. 14 year old me is laughing soooooooo hard at this.

 

[2006Tahoe2WD]

I'm now pretty sure I have the dreaded o-ring issue. Low (25-30) when cold and slowly goes up to 40-45 as engine heats up. Just replaced the sensor after seeing it peg at 80. What are the chances I have the o-ring issue?

 

[2006Tahoe2WD]

The mechanic looked at it for $500 and filled the oil a bit and changed the connector on the sensor. The starting cold psi is now 32 instead of 25 but doesn't really go up with rpm. When the oil warms up I get 42-44 on the freeway. I think the O-ring is still leaking but not too bad at this point. I'll probably watch it for awhile and see what happens. $600 to change the O-ring.

 

[strutaeng]

The mechanic looked at it for $500 and filled the oil a bit and changed the connector on the sensor. The starting cold psi is now 32 instead of 25 but doesn't really go up with rpm. When the oil warms up I get 42-44 on the freeway. I think the O-ring is still leaking but not too bad at this point. I'll probably watch it for awhile and see what happens. $600 to change the O-ring.

$600 to replace the o-ring? I'm assuming he also replaced the oil pan gasket as well? He replaced the connector on what sensor?

Why do you think the o-ring is "still leaking"?

 

[2006Tahoe2WD]

$600 to replace the o-ring? I'm assuming he also replaced the oil pan gasket as well? He replaced the connector on what sensor?

Why do you think the o-ring is "still leaking"?

New gasket, new O-ring, I provide oil, filter, etc. I don't think he took that into account. Let's say $500. I still think it is leaking because the pressure is low when cold and doesn't go up to the relief valve pressure when cold and rev'd up a bit.

 

[2006Tahoe2WD]

I'm now thinking re.. while-you-are-in-there..... replace oil pump. Stock or Melling high pressure and/or high flow?