Need some input here from you gents concerning the problems I've had coinciding, whilst having both codes. Bear with me, as I might go different directions explaining issues and my thoughts...
Truck has had a high idle and lean issue for a while, that I've sadly procrastinated on troubleshooting properly until now. I think I've had this problem for 4 months? Truck will skip while idling, or at very low speeds. When coming to a stop (usually an abrupt one), the RPM's will kick up to the 900 range while idling. Truck will be skipping when this high idling occurs, 80% of the time. Most times this problem will persist throughout the drive, but will sometimes cease and idle normally on it's own, but with a slight rough idle or hesitation still present. I have noticed that if I drive easy and come to a steady stop I can fight off this problem or prevent it from occurring throughout an entire drive.
It's made me wonder if I got various problems going on, or if this is because of mainly the Camshaft Position Sensor related code P0340. If the sensor is faulty and messing with the timing, would all this be a result??? Wouldn't that also lead to a P0171 code, as the fuel/air mixture would be out of wack due to the Camshaft Position Sensor messing with timing? That makes sense to me, but I could very well be wrong here.
Fuel consumption has ranged from as crappy as 210 miles per tank, to 300 miles per tank (which is almost unheard of for me). Driving behavior has relatively been the same throughout this time, just normal driving without any spirited driving.
Yesterday my Change Engine Oil Light came on, I though this had to be some sort of mistake as I change my oil on September 3rd! Checked the oil today and it's full, but the oil is really dark. Doesn't have an awfully burnt smell though. What would cause my engine oil to get really dark after changing my oil just 3 months ago; actually setting off the change engine oil light? I know that running lean will eventually lead to burnt valves and engine overheating problems... I haven't noticed any overheating symptoms, or even my engine seeming overly warm. Haven't been able to monitor coolant temps and other live date with my phone anymore since my OBD2 dongle stopped working. It no longer sends out a wi-fi signal.
I will be running my laptop and having HP Tuners data-logging a drive tomorrow. I can see what the hell is going on and when exactly. I finally set it all up and registered everything today.
Sorry if I'm all over, kind of typing as I go over this in my head....
I've come up with a to-do list of:
-First off, changing this dark oil out. Oil is still topped off, nothing being burned.
-Do a CASE Relearn with HP Tuners to see if it'll make P0340 go away, hopefully fixing all these problems
-Replace Camshaft Position Sensor, if P0340 returns after successful Relearn
-Check fuel pressure
-Replace Fuel Filter
What's your take on this guys? Again, sorry if I sound like a rambling idiot. My mind is fried and all over the place since I lost my job over 2 weeks ago. I don't have a clear head at the moment. Still haven't found anything... Emissions is due soon as well. I can always remove those to DTC's from ever coming up with HP Tuners, but i'd like them to remain so I can know if I am on the right track to fixing all these issues.
Truck has had a high idle and lean issue for a while, that I've sadly procrastinated on troubleshooting properly until now. I think I've had this problem for 4 months? Truck will skip while idling, or at very low speeds. When coming to a stop (usually an abrupt one), the RPM's will kick up to the 900 range while idling. Truck will be skipping when this high idling occurs, 80% of the time. Most times this problem will persist throughout the drive, but will sometimes cease and idle normally on it's own, but with a slight rough idle or hesitation still present. I have noticed that if I drive easy and come to a steady stop I can fight off this problem or prevent it from occurring throughout an entire drive.
It's made me wonder if I got various problems going on, or if this is because of mainly the Camshaft Position Sensor related code P0340. If the sensor is faulty and messing with the timing, would all this be a result??? Wouldn't that also lead to a P0171 code, as the fuel/air mixture would be out of wack due to the Camshaft Position Sensor messing with timing? That makes sense to me, but I could very well be wrong here.
Fuel consumption has ranged from as crappy as 210 miles per tank, to 300 miles per tank (which is almost unheard of for me). Driving behavior has relatively been the same throughout this time, just normal driving without any spirited driving.
Yesterday my Change Engine Oil Light came on, I though this had to be some sort of mistake as I change my oil on September 3rd! Checked the oil today and it's full, but the oil is really dark. Doesn't have an awfully burnt smell though. What would cause my engine oil to get really dark after changing my oil just 3 months ago; actually setting off the change engine oil light? I know that running lean will eventually lead to burnt valves and engine overheating problems... I haven't noticed any overheating symptoms, or even my engine seeming overly warm. Haven't been able to monitor coolant temps and other live date with my phone anymore since my OBD2 dongle stopped working. It no longer sends out a wi-fi signal.
I will be running my laptop and having HP Tuners data-logging a drive tomorrow. I can see what the hell is going on and when exactly. I finally set it all up and registered everything today.
Sorry if I'm all over, kind of typing as I go over this in my head....
I've come up with a to-do list of:
-First off, changing this dark oil out. Oil is still topped off, nothing being burned.
-Do a CASE Relearn with HP Tuners to see if it'll make P0340 go away, hopefully fixing all these problems
-Replace Camshaft Position Sensor, if P0340 returns after successful Relearn
-Check fuel pressure
-Replace Fuel Filter
What's your take on this guys? Again, sorry if I sound like a rambling idiot. My mind is fried and all over the place since I lost my job over 2 weeks ago. I don't have a clear head at the moment. Still haven't found anything... Emissions is due soon as well. I can always remove those to DTC's from ever coming up with HP Tuners, but i'd like them to remain so I can know if I am on the right track to fixing all these issues.