Golf VI R :: Rough Running - Knocking Sounds Coming From Engine At Stop Light
Jun 19, 2015
I started my car this morning and drove to work. It's not that cold. I heard knocking sounds coming from the engine at a stop light. I lightly tapped on the accelerator to hear it better. My commute is short (3 miles), so I gingerly cruised there. I didn't try to accelerate and it didn't seem like I was suffering from loss of power either. I opened the hood and let it idol at work and couldn't really hear the knocking sound.
I downloaded the code when I got to work. After that I started the engine again and it sounded pretty normal. I'm due for my oil/filter change (~5500 miles).
Here are the codes. Any reasons to worry, or is this an one-time thing?
2 Faults Found:
001322 - Camshaft Adj. Bank 1 Intake
P052A - 001 - Cold-Start Timing not Reached
Freeze Frame:
Fault Status: 01100001
Fault Priority: 2
Fault Frequency: 1
[Code] ....
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My 2001 Ford F150 Supercrew (5.4L, 230,000 miles)has the check engine light on with the code reader telling me that it is the P0174. The truck would run rough when cold (usually in the mornings) and sometimes it would get close to stalling out when coming to a stop light. So we would quickly put it in park and give it some gas to rev it up a bit. After the truck gets warmed up, it runs great with no hint of the rough idle. Since this all started I have changed out the PCV valve and replaced the PCV hose (including the elbow). I have also replaced the Idle Air Control unit but that didn't really make a difference.
We then experienced a cylinder #4 misfire which we resolved by changing out the cop with a new Motorcraft unit. The misfire went away but we still had the problem of running rough at idle to the point of stalling out at stops when the engine is cold. A few weeks ago we cleaned the MAF sensor and that seemed to work. The truck doesn't run as rough now (when cold) at stop-lights, but occasionally it will still have the loping idle. We cleared the check engine code and it stayed off for about a week before returning.
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