Tm2525ai
Full Access Member
I have an idle issue (when warm, not cold and just at idle, drives fine otherwise) with my 2010 6.2L Raptor (bought new in 2010) and I spent about a month combing every idle issue in this and even other forums, no solution found. Here is my issue, which I am also having my dealer send to Ford as a priority ticket.
My Raptor has always idled beautifully and ‘steadily’.
I only have 43,800 miles on it (work from home).
However, this last oil and air filter change, the next day I drove it, it was hesitating and shifting very badly on a trip to the store and by the time I got home, it died backing up a slightly sloped driveway, sloped down in the front. It would not start at all.
At first, I thought maybe a bad oil filter, so I changed that, and nothing. Finally, I unplugged the Mass Airflow Sensor and it started right up and was able to back it into my garage.
Then, I could not find a part at Ford, so I bought an after-market part at AutoZone. That part worked, but there was clearly something very wrong. It idled very badly, not stead, and starting off and stopping you could hear the gears in both the transmission and rear end ‘thrashing/clashing’ constantly, not good.
So, I realized the part was not good, so I cleaned the original MAF with MAF cleaner and that seemed to at least let the truck run. It was clear the issue started with oil from the K&N air filter, so I also put a paper filter on. However, my Raptor no longer idles the way it always did.
Before this debacle, it idled a nice steady ‘Whaw whaw whaw’ always.
Now, it idles not only with random misses, but the pattern is more like ‘Whaw wuw wuw whaw whaw wuw, whah wuw wuw whaw whaw wuw’, again, with a bit of randomness, but clearly not right and misses and is rough. The idle is a change in pattern, not a change in rpm, though overall I think it idles around 50rpm lower than before and almost sounds like the timing is off from before, the sound from the exhaust is a bit lower tone, as well.
The dealer has reprogrammed the PCM or ECM MAF control and I also disconnected the battery and relearned and the idle is not as bad as initially, but it is clearly bad, wrong and not the same as it ever was.
I subsequently replaced the MAF sensor with a new one, I replaced the PCV and even the PVC valves. The PCV was chattering on and off, but replacing it with a new one it still chatters on and off and the idle stays bad when it’s chattering and when it is not.
I also changed oil again, just in case the oil was bad, but no change.
I am into this mess for over $700 so far and am no closer to solving the problem.
At this point, I suspect possibly the aftermarket MAF or something else changed timing and/or corrupted the ECM/PCM programs that control timing.
I took it to a Ford tuning shop, and they say it’s an electrical issue, not a mechanical issue.
I had it to the Ford dealer several times and on a scope, and they say they cannot see the misses, though they are clearly there, so I am not sure why they can’t see it. It might also be a vacuum issue, though I cannot find it. I really need this resolved asap.
I am possibly trading up for a Gen3, if they would only release pricing, build and reservation info
However, I want my Raptor running right, meanwhile!
My Raptor has always idled beautifully and ‘steadily’.
I only have 43,800 miles on it (work from home).
However, this last oil and air filter change, the next day I drove it, it was hesitating and shifting very badly on a trip to the store and by the time I got home, it died backing up a slightly sloped driveway, sloped down in the front. It would not start at all.
At first, I thought maybe a bad oil filter, so I changed that, and nothing. Finally, I unplugged the Mass Airflow Sensor and it started right up and was able to back it into my garage.
Then, I could not find a part at Ford, so I bought an after-market part at AutoZone. That part worked, but there was clearly something very wrong. It idled very badly, not stead, and starting off and stopping you could hear the gears in both the transmission and rear end ‘thrashing/clashing’ constantly, not good.
So, I realized the part was not good, so I cleaned the original MAF with MAF cleaner and that seemed to at least let the truck run. It was clear the issue started with oil from the K&N air filter, so I also put a paper filter on. However, my Raptor no longer idles the way it always did.
Before this debacle, it idled a nice steady ‘Whaw whaw whaw’ always.
Now, it idles not only with random misses, but the pattern is more like ‘Whaw wuw wuw whaw whaw wuw, whah wuw wuw whaw whaw wuw’, again, with a bit of randomness, but clearly not right and misses and is rough. The idle is a change in pattern, not a change in rpm, though overall I think it idles around 50rpm lower than before and almost sounds like the timing is off from before, the sound from the exhaust is a bit lower tone, as well.
The dealer has reprogrammed the PCM or ECM MAF control and I also disconnected the battery and relearned and the idle is not as bad as initially, but it is clearly bad, wrong and not the same as it ever was.
I subsequently replaced the MAF sensor with a new one, I replaced the PCV and even the PVC valves. The PCV was chattering on and off, but replacing it with a new one it still chatters on and off and the idle stays bad when it’s chattering and when it is not.
I also changed oil again, just in case the oil was bad, but no change.
I am into this mess for over $700 so far and am no closer to solving the problem.
At this point, I suspect possibly the aftermarket MAF or something else changed timing and/or corrupted the ECM/PCM programs that control timing.
I took it to a Ford tuning shop, and they say it’s an electrical issue, not a mechanical issue.
I had it to the Ford dealer several times and on a scope, and they say they cannot see the misses, though they are clearly there, so I am not sure why they can’t see it. It might also be a vacuum issue, though I cannot find it. I really need this resolved asap.
I am possibly trading up for a Gen3, if they would only release pricing, build and reservation info
However, I want my Raptor running right, meanwhile!
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