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P0300 Code - rough idle

Old Oct 25, 2023 | 08:50 PM
  #31  
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So driving today was fine, except for right before I got home tonight. The rough idle returned, and the check engine light came on. I got p0011 again.
Old Oct 25, 2023 | 09:38 PM
  #32  
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If the new solenoid is fouled already, you have a bigger problem. Like metal shavings in the oil from the timing components being ground down. The rattling on your video sounded pretty bad. I would recommend not driving it or even cranking the engine until the timing components are inspected.
Old Oct 25, 2023 | 09:56 PM
  #33  
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Did that when I changed the vvt solenoids
Old Oct 26, 2023 | 08:06 AM
  #34  
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https://www.obd-codes.com/p0011

Incorrect camshaft timing most likely becuase the front guide has broken, the timing chain skipped a tooth.
Old Oct 26, 2023 | 08:11 AM
  #35  
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Is this a big, expensive fix? Is it something the techs should have identified when they scanned the car the other day?
Old Oct 26, 2023 | 08:49 AM
  #36  
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Broken chain guides, bad chain, some loose wire, burned valve
If the CEL is not lit a scan will only show historic or pending codes. The only codes that matter are ones that trigger the CEL.
Old Oct 26, 2023 | 08:57 AM
  #37  
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The CEL was lit when the scanned it. I purposely didn't clear it so they could confirm the issue. When they scanned it on Tuesday, they got P0011 and P0014. Their diagnosis was bad intake and exhaust VVT solenoids, which is the direction most of yall were pointing me in. They replaced both parts on Tuesday...it ran almost like new for the 20 mile drive to work, and also ran fine back. But then started doing the same crap again by the time I got back home...rough idle, stall. By that evening, the problem went away. Last night I drove 50 miles round trip with no issues except when I was at a complete stop/rough idle. CEL was not lit at that point. By the time I hit my street, the CEL came on. I scanned it and got P0011.
Old Oct 26, 2023 | 09:00 AM
  #38  
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Originally Posted by SullyinCT
...so I took the car into Jiffy Lube this morning ...
Jiffy Lube for engine work? Oooo Kay.

Did they change the oil? I woulda wanted to evaluate the oil. Also woulda wanted to look at the screens on the solenoid valves.

Did they use AC Delco solenoid valves? Of course not. The generics are notorious for failing quickly, but because the code came back so fast, that takes us to a bad VVT intake cam position actuator, AKA phaser, which might also explain noise.

Chain skipping a tooth would more likely cause P0016, or P0017, or both. P0011 is saying the system is doing a bad job of positioning just the intake cam. So, solenoid, or less often, phaser. (Sticky cam bearings or wonky cam sensor possible, I suppose, but never heard of those actually causing P0011. Would dismiss those for now.)

Unrealated to the P0011, but didja get right plugs in it?

Can't really change a phaser without resetting the timing chain, so do a chain job, including new phasers. Even if that doesn't fix it, at 165k you can call it maintenence. Don't remember if you did a compression check, but that could instruct you on whether the engine is worth the cost.

I agree they may have left the MAF sensor unplugged. Could need some fuel injector cleaner or more serious injector work. But prolly not. The cause of the P0011 alone could cause the rough running.
Old Oct 26, 2023 | 09:08 AM
  #39  
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Originally Posted by PulpFriction
Jiffy Lube for engine work? Oooo Kay.

Did they change the oil? I woulda wanted to evaluate the oil. Also woulda wanted to look at the screens on the solenoid valves.

Did they use AC Delco solenoid valves? Of course not. The generics are notorious for failing quickly, but because the code came back so fast, that takes us to a bad VVT intake cam position actuator, AKA phaser, which might also explain noise.

Chain skipping a tooth would more likely cause P0016, or P0017, or both. P0011 is saying the system is doing a bad job of positioning just the intake cam. So, solenoid, or less often, phaser. (Sticky cam bearings or wonky cam sensor possible, I suppose, but never heard of those actually causing P0011. Would dismiss those for now.)

Unrealated to the P0011, but didja get right plugs in it?

Consider a chain job, including new phasers. Even if that doesn't fix it, at 165k you can call it maintenence. Don't remember if you did a compression check, but that could instruct you on whether the engine is worth the chain job.
When you're a disabled Veteran and the sole source of income (with crappy credit) in your family, sometimes Jiffy Lube is the best you can do. Yes...they did a high mileage oil change. I will have to confirm the brand of solenoid valves they used, but I did use the AC Delco iridium plugs. Did not do a compression check
Old Oct 26, 2023 | 10:27 AM
  #40  
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The P0014 is pointing toward bad chain and/or guides. They would not have looked at the chain unless told to. The valve cover needs to be removed and visually look at the chain; any slack between the sprockets is bad.
You might check local independent shops and ask what their hourly rates are.

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