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Yep, I'm a complete and total idiot for thinking my oil and coolant are mixing.

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TemplesofLamneth

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As of tonight, P0128.

Diagnostics on the torque app are showing to high a value on the heated catalyst, cylinder 6 misfire (1 count in last 10 drive cycles) and an unknown value being too low.

Car is staying in the driveway until Saturday and I'm throwing new gaskets and a thermostat in it.

I'm outta here, feel free to close my account. Or ban me. (See below)

And Scotty, eat a dick. :D
 


P0128 Coolant Thermostat Below Thermostat Regulating Temperature

Bad thermostat probably stuck open and your running pig rich.
Pretty easy to tell if your oil and coolant are mixing by checking the oil isn't it?
 


No lean or rich codes and the diagnostics show that the air fuel mixture is AOK. Only cylinder misfiring is #6 which is where I've been hearing a noise which I assume is coming from the lifters and pushrods on the driver side (rear) of the engine I can hear it between 1800-2000 rpms until the sound of the engine drowns it out. Cylinder 6 is rear bank on the driver side so I probably have a bad seal in the LIM allowing the sound to escape into the engine bay. I have no milky oil but it smells sickeningly sweet as does the exhaust.

And to answer the question Scotty rode my ass about, seeing as how my old gaskets had a thin layer of oil between them and the block, it's not far fetched to think that oil can get into the coolant passages coming from the block to the LIM. Oil from the lifter valley can seep into the coolant if there's a poor seal, as the coolant cools it condenses which will cause a sucking action through the coolant system.
 
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holly crap your still going on about this? your wrong, we are all right. get the f over it.


and post a vid or ill ban you. the only way your getting any help with sounds that seem internal.
 
3800Pro is all the help I need. Two of the top members, one with a degree in engineering have found oil in their coolant and had no cracked block or bad head gasket. Ban me if you will, you've single handedly proven that 3800pro and GPONA have a better think tank than you consider yourself to be.

Or you can keep me here until I re-do the job and post pics of the leak and botched gasket job to rub in your face, your choice.
 
think what you want, and the dope at 3800 pro. coolant is under pressure, the oil is not.

big hint here is theres no oil passage between the lim and head either. your valve covers leaked i bet. if you had pools of liquid on the lim valley bolts, thats coolant that seeped up the bolt threads and valve cover oil. why you reseal the threads on those bolts.

live and learn more please.
 
ScottyDoggs said:
think what you want, and the dope at 3800 pro. coolant is under pressure, the oil is not.

big hint here is theres no oil passage between the lim and head either. your valve covers leaked i bet. if you had pools of liquid on the lim valley bolts, thats coolant that seeped up the bolt threads and valve cover oil. why you reseal the threads on those bolts.

live and learn more please.
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Scotty, FTW!
 


Also, depending on where you are in Virginia, I can meet you somewhere in between or make a trip and help you fix whatever your problem is in an afternoon. I've fixed a few lim gasket issues.

Oh, and Scotty is a close second to Bill here on good advice, so yeah. And He's right. I'll be happy to help and show you that if you really need it. No BS or sarcasm either. (maybe a little sarcasm)
 
chrsmi1 said:
Also, depending on where you are in Virginia, I can meet you somewhere in between or make a trip and help you fix whatever your problem is in an afternoon. I've fixed a few lim gasket issues.

Oh, and Scotty is a close second to Bill here on good advice, so yeah. And He's right. I'll be happy to help and show you that if you really need it. No BS or sarcasm either. (maybe a little sarcasm)
Click to expand...

My buddies coming out Saturday to give me a hand. Taking it apart is easier than putting it back together. About 1.25 hours to get i all apart, I spent 5 hours putting back together due to frequent breaks and forgetting to install the alternator bracket on the driver side behind the intake. Had to pull the injector rail and UIM. Thanks for the offer though.

I'm throwing in a new thermostat just to be safe, I did have a hell of time removing it to install the new gasket which didn't seem to seal as well as the old one. It was tapered down towards the LIM and the one that came off of it was the same thickness all the way through.

I'm not gonna keep arguing about the oil in coolant, I've seen it in the 3100 and given there is a depressurization that occurs as the engine is cooling it could suck oil into the passages in the block. Last time I'm saying it not changing my mind.

When I bought this vehicle I looked at a few Lacrosse Supers and one had white smoke pouring from the passenger side exhaust pipe and a cracked heater core, however it didn't overheat during test drive. The heater core was just turning the windshield orange.
 
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TemplesofLamneth said:
My buddies coming out Saturday to give me a hand. Taking it apart is easier than putting it back together. About 1.25 hours to get i all apart, I spent 5 hours putting back together due to frequent breaks and forgetting to install the alternator bracket on the driver side behind the intake. Had to pull the injector rail and UIM. Thanks for the offer though.

I'm throwing in a new thermostat just to be safe, I did have a hell of time removing it to install the new gasket which didn't seem to seal as well as the old one. It was tapered down towards the LIM and the one that came off of it was the same thickness all the way through.

I'm not gonna keep arguing about the oil in coolant, I've seen it in the 3100 and given there is a depressurization that occurs as the engine is coolant it could suck oil into the passages in the block. Last time I'm saying it not changing my mind.

When I bought this vehicle I looked at a few Lacrosse Supers and one had white smoke pouring from the passenger side exhaust pipe and a cracked heater core, however it didn't overheat during test drive. The heater core was just turning the windshield orange.
Click to expand...

Well if you and your buddy run into trouble, feel free to give me a holler if you're semi close to Raleigh (if you live in blacksburg you're on your own!). My wife has family in Richmond so we could make a trip on a weekend and i could swing by to assist. Either way good luck.
 
TemplesofLamneth said:
I'm not gonna keep arguing about the oil in coolant, I've seen it in the 3100 and given there is a depressurization that occurs as the engine is cooling it could suck oil into the passages in the block. Last time I'm saying it not changing my mind.
Click to expand...

your just making all this up, please stop it. keep your impure thoughts to yourself. you got theory's, but no knowledge of how the coolant and oil systems work at all.

i bet last post the sheen you saw was f ing gas. cause we all know these engines like to gas up the oil.
 


Only had that happen on my 3300 when the fuel pressure regulator went. Gas poured out of the intake and contaminated the oil. Luckily she didn't hydrolock, just lost all power in the middle of the road.
 
You've cited 3100, 3300, and Lacrosse engines but apparently cant figure out a 3800...............

Ever stop to question why 3800pro.com GPONA, and clubgp.com are all ghost towns? Its simple.

This site is the best remaining wbody specific forum. Assh0les galore around here Im one myself when it comes to dealing with idiots like you that are told the same things over and over and over.........

Gee wonder why you keep getting told the same thing over and over and over.....

LOL
 
The siphon effect you are speaking of .. is real. However the amount of oil you are talking about isn't an amount that the effect you mention will pull in. In addition, it's extremely unlikely and if enough oil did get in your coolant..you would have much more coolant getting into the crankcase. Enough so that you'd be low on coolant constantly and your crankcase would be very over full and foamy. Because..if you can siphon a little oil back.. you are going to push a ton of coolant while it's under pressure.

Reality of these motors is.. you'd have a much bigger problem than you do by now if you had a botched the gasket job.

As you may remember, I suggested that you had gotten some coolant from the LIM into the lifter valley/crankcase. When this occurs on a metal panned engine, there is approximately 3/8" of space below the drain plug. We all know oil sits atop water, therefore.. if you didn't fire it up and run for a few min, you may have still had some coolant in the bottom of the pan.

The oil in this engine had been drained. Sure there's a little residual that like dripped back down, but you get the point about how much room there is below the level of the plug in the pan.


As for your misfire on cylinder 6, it's more likely that you have the O2 sensor wiring touching the plug wire and causing issues.
 
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