Pinging V10
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Laughing Gas
Joined: Jan 2002
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Pinging V10
Does anyone know if the timing is ajustable on the V10, either by 'flash' or adjustment? My truck started to ping over the last few months (while the engine is 'lugging', before it downshifts/87 octane as stated in the owners manual).
I tried buying fuel at 3 different stations (3 tankfulls per station), still pings.
Changed the fuel filter & the air filter.
The only thing that cured it was (1) tankfull of 92 octane. When that ran out I went back to 87 and......the pinging returned.
I know I can just start running 92 all the time (and releaving my bank account), but the truck is supposed to run on 87 and it did so for over a year.
The truck is a 2002 F250SD CC SB 4x4 4:30's AT with stock size 2657516 tires. Also, it doesn't matter if the AC compressor is on or off.
I want to know if anyone else had/has this problem before I inconvienience myself with the stealership (yes it is under warranty).
I tried buying fuel at 3 different stations (3 tankfulls per station), still pings.
Changed the fuel filter & the air filter.
The only thing that cured it was (1) tankfull of 92 octane. When that ran out I went back to 87 and......the pinging returned.
I know I can just start running 92 all the time (and releaving my bank account), but the truck is supposed to run on 87 and it did so for over a year.
The truck is a 2002 F250SD CC SB 4x4 4:30's AT with stock size 2657516 tires. Also, it doesn't matter if the AC compressor is on or off.
I want to know if anyone else had/has this problem before I inconvienience myself with the stealership (yes it is under warranty).
New User
Joined: Jan 2003
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Mine started dioing the same thing a few months ago. I do not know if this will work for yours, but I disconnected the battery to reset the computer and the pinging is gone. These trucks have a "knock sensor" that is suppose to retard the timing when the engine starts to ping. My guess is that resetting the computer got the sensor going again. Just a theory but it worked.
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
Like Lighthouse said, reset the computer first. Disconnect the battery overnight, and then take it out on the highway, cruise at 70+ for a 5-10 minutes, pull over, coasting all the way without hitting the brakes, then pull out slowly, speed back up to 70+, and then pull over again.
Then, MASH IT TO THE FLOOR, and go back up to 70+.
This will make the computer relearn everything and go into closed-loop ...
One thing, if it pings again soon after resetting the computer, you probably have a bad knock sensor.
Funny story: I had a dirty MAF in my '96 4.6L T-bird, overoiled K&N. Cleaned it, and according to the TSB about the fault code I got (lean bank 1/2), Ford says to get the computer to learn the MAF, I had to get onto the highway, and in 3rd gear, keep my foot to the floor for at least 30 seconds (or a minute, or something like that).
Only problem was with my Superchip and a 3.73 rear, I was doing over 120MPH before the 30 seconds were up... and they said to repeat it a few times! Mustang GT thought I was playing with him, and started to get pissed off because he was losing ground around that 120 mark... funny... t-bird was more aerodynamic than his 'stang...
Then, MASH IT TO THE FLOOR, and go back up to 70+.
This will make the computer relearn everything and go into closed-loop ...
One thing, if it pings again soon after resetting the computer, you probably have a bad knock sensor.
Funny story: I had a dirty MAF in my '96 4.6L T-bird, overoiled K&N. Cleaned it, and according to the TSB about the fault code I got (lean bank 1/2), Ford says to get the computer to learn the MAF, I had to get onto the highway, and in 3rd gear, keep my foot to the floor for at least 30 seconds (or a minute, or something like that).
Only problem was with my Superchip and a 3.73 rear, I was doing over 120MPH before the 30 seconds were up... and they said to repeat it a few times! Mustang GT thought I was playing with him, and started to get pissed off because he was losing ground around that 120 mark... funny... t-bird was more aerodynamic than his 'stang...
Senior User
Joined: Jul 2003
Posts: 315
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Mine was pinging with the trailer behind it, did the same thing, put premium in it, pinging was gone until 87 octone was back in it, I did the computer re-set and now everything is fine. Going on around 5000mi since and still no problem.
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
Sounds like a software bug - the computer gets stuck somewhere, can't retard the timing and it needs a hard reset to get it working again.
Don't tell me Microsoft is writing the OBD II software !
Don't tell me Microsoft is writing the OBD II software !
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Elder User
Joined: Jan 2004
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From: Colville
Krewat, were you serious when you wrote the reset procedure? unpluging over night I can understand. Getting another ticket I don't need. No Freeways in Stevens County Washington. Any other methods?
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FTE Leadership Emeritus
Joined: Jul 2002
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From: Long Island USA
Originally posted by 68 351 bronc
Krewat, were you serious when you wrote the reset procedure? unpluging over night I can understand. Getting another ticket I don't need. No Freeways in Stevens County Washington. Any other methods?
Krewat, were you serious when you wrote the reset procedure? unpluging over night I can understand. Getting another ticket I don't need. No Freeways in Stevens County Washington. Any other methods?
For whatever reason, for my t-bird, the TSB for a "contaminated MAF" said replace the MAF and do that "hold full throttle for 30 seconds" stuff...
I didn't mean YOU had to do it!
Senior User
Joined: Nov 2003
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From: Oxnard CA
I have also had ping problems with my 2000 f250 v10. Had the Ford dealer do the diags and they told me the ping was normal. Since I didn't buy that line, I went to the parts store to look at fuel injector cleaners. The people there said a lot of local mechanics use a fuel treatment oil from Lucas Oil. The oil actually goes in the gas tank! I tried it a couple of times and no knock, so I bought some by the gallon (much cheaper). Maybe I'll fill it up with just the 87 octane gas next time and see if it knocks. If it does, I'll try the computer reset mentioned here. If it still knocks, I'll put the Lucas Oil in again.
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