Oil Pressure Sensor?

[orange57]

I'm doing the oil pan gasket on my 2000 Tahoe Limited. On the passenger side of the engine, just above the pan, there is a sensor that also appears to be leaking. Is that the Pressure switch. My googling found people replacing an oil pressure switch on the top of the engine. But, maybe my googling skills are off.

I'll try to snap a photo in the morning. Was getting late tonight and forgot to.

Thanks,

Matt

 

[wjburken]

I'm doing the oil pan gasket on my 2000 Tahoe Limited. On the passenger side of the engine, just above the pan, there is a sensor that also appears to be leaking. Is that the Pressure switch. My googling found people replacing an oil pressure switch on the top of the engine. But, maybe my googling skills are off.

I'll try to snap a photo in the morning. Was getting late tonight and forgot to.

Thanks,

Matt

Your oil pressure sensor is located on the back side of your engine by the firewall on the drivers side.

Not sure what you might be seeing.

 

[orange57]

Photo of the sensor in question. Right by the oil dipstick.

 

[Rocket Man]

Oil level sensor. So when you run 3-4 quarts low on oil you get a warning.

 

[JonnyTahoe]

Photo of the sensor in question. Right by the oil dipstick.

View attachment 256863

2000 Limited very rare truck.

 

[OR VietVet]

https://www.rockauto.com/en/moreinfo.php?pk=1140662&cc=1361551&jsn=976

According to RA the 5.7 and the 5.3, in 2000, used this same sensor.

 

[JonnyTahoe]

2000 Limited very rare truck.

Your oil pan appears to be a steel black pan. My 2000 Tahoe and Yukon both have the Aluminum oil pans.

 

[JonnyTahoe]

https://www.rockauto.com/en/moreinfo.php?pk=1140662&cc=1361551&jsn=976

According to RA the 5.7 and the 5.3, in 2000, used this same sensor.[/QUOTE

 

[JonnyTahoe]

.

 

[JonnyTahoe]

.

 

[JonnyTahoe]

Oil level sensor. So when you run 3-4 quarts low on oil you get a warning.

Mine warning light comes on at 2 qts low

 

[JonnyTahoe]

I'm doing the oil pan gasket on my 2000 Tahoe Limited. On the passenger side of the engine, just above the pan, there is a sensor that also appears to be leaking. Is that the Pressure switch. My googling found people replacing an oil pressure switch on the top of the engine. But, maybe my googling skills are off.

I'll try to snap a photo in the morning. Was getting late tonight and forgot to.

Thanks,

Matt

What brand Gasket are you using

 

[Rocket Man]

Mine warning light comes on at 2 qts low

I was being sarcastic. I have never had a vehicle of mine go a quart low much less 2 quarts.

 

[east302]

This is a 350, right? I’m having a senior moment and cannot get my bearings in your photo, but they use a knock sensor in the block near the starter.

They can be quickly swapped out without losing too much coolant.

 

[orange57]

Ah, a knock sensor. My photo is taken with the starter removed.

So the knock sensor is in the coolant too?

Well I ordered the level sensor today. May need to return that then.

Truck has 206k on it. Doing the pan gasket, second one that wouldnt seal at the front. Also putting on an aluminum timing chain cover, new water pump, thermostat and hoses. The hoses and thermostat were last changed around 6 years ago.

I'm debating a new radiator, pretty sure it's original, but doesn't leak, and the truck has never run hot. But, it's going to be pulling daily driver duty again while I fix another car.

Then down the line will be a full suspension refresh, it needs it.

 

[orange57]

What brand Gasket are you using ? Part Number ?[/QUOTE

OEM AC Delco. I could not get the felpro to seal. I think the RTV doesnt adhere to well. The AC Delco seems to be a more conventional rubber where as I think the felpro was silicone. I want to stop painting my driveway ha ha

 

[east302]

Ah, a knock sensor. My photo is taken with the starter removed.

So the knock sensor is in the coolant too?

Well I ordered the level sensor today. May need to return that then.

Truck has 206k on it. Doing the pan gasket, second one that wouldnt seal at the front. Also putting on an aluminum timing chain cover, new water pump, thermostat and hoses. The hoses and thermostat were last changed around 6 years ago.

I'm debating a new radiator, pretty sure it's original, but doesn't leak, and the truck has never run hot. But, it's going to be pulling daily driver duty again while I fix another car.

Then down the line will be a full suspension refresh, it needs it.

Torque spec for the knock sensor is 14 ft-lbs, so it doesn’t take much. Mine came with thread compound already on it. No need to drain the coolant if you’re quick enough.

 

[orange57]

Already draining the coolant for the timing chain cover and the water pump. So not a concern there.

 

[JonnyTahoe]

OEM AC Delco. I could not get the felpro to seal. I think the RTV doesnt adhere to well. The AC Delco seems to be a more conventional rubber where as I think the felpro was silicone. I want to stop painting my driveway ha ha

FELPRO makes quality gaskets. They are the gaskets Professionals use just like it says on the label.

 

[orange57]

FelPro is every bit as good as OE. They are the Gaskets Professionals use just like it says on the label.

Concur, I have used them in many applications. The one I took off was leaking at the front, and there was RTV there. I researched this a bunch, and Felpro recommends no RTV. I installed a new one with no RTV and it still leaked.

I believe the felpro gasket is silicone, but I can't confirm this. And getting things to stick to silicone can be difficult. It could be the original one that was leaking did not use a silicone based RTV, and that was the issue.

I also saw a lot of recommendations that the OEM one is better in this particular application. And it may be that people have had better luck as it appears to be a nitrile, or non silicone rubber. So I'm hopeful that the third time is the charm, this time using the OEM gasket.