Source of 2003 EV oil drip: sensor o-ring or valve cover gasket?

[bcolins]

After driving from Austin TX to Durango, Colorado, I noticed a new oil drip on the ground. I cleaned the front of the engine where the leak appeared to be coming from and it looks like it is either coming from one of the two sensors (black and brown inboard of a large cooling hose in green circular base) or potentially the valve cover or something else above the two sensors. These two sensors are more or less directly below the oil fill tube. I put the radiator in the service mode to see if I could see anything from the top, and the valve cover gasket area appears to be more or less dry. Pics of the two sensors and valve cover gasket area attached.

[paddygarcia]

Well, it's not the sensors because they're in coolant, not oil.

Have you verified that you truly have a leak above the oil filter housing? If the valve cover gasket is dry your next possibility is the timing chain housing. Unfortunately the upper and lower chain housings are sealed by the head gasket. If that's leaking oil you're looking at a top end R&R.

The good news is that the valve job and injector refresh you might as well do with everything off will make your van run better. WYIT you night as well fit new timing chains which probably won't affect performance but won't get easier to do than when the head is off.

[bcolins]

[kourt]

Brian, have you ruled out the oil cooler o-rings? They are a common fail/replace item.

The last time I ordered one of these oil cooler o-rings from FCP, they sent me 40 of them by accident. So I have some extras.

kourt
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2001 Eurovan Winnebago Camper

[bcolins]

[kourt]

Yeah, it happened twice, even. I ordered another one o-ring another time and they sent me another 30 or 40. I sent that second batch back. Their parts picker has some homework to do.

The cooler o-rings I'm talking about are items 3 (FCP SKU REI-407757100), 5 (FCP SKU REI-407754100), and 7 (FCP SKU ELR-634380) in the picture below. I think I have 30 of item 5 or 7, but item 3 you'll have to order on your own. If you want to order parts, let me know and I will figure out what I have so you don't need to order extras.

kourt

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2001 Eurovan Winnebago Camper

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I think there is an oil pressure sensor type thing above the cooler
Mine was gushing.
I found it after I replaced my oil cooler O rings, which I thought was the cause ot the leak.

It was the oil sensor thing, metal

2001 vr6
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2001 eurovn weekender 207k fresh batteries