An Interesting Experiment
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New User
Joined: Mar 2001
Posts: 1
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An Interesting Experiment
I have a HUGE favor to ask of you V10’ers out there, especially those of you with a 1999 Superduty. I need you to run an experiment.
Hop in your unloaded truck and drive down a straight and flat road in second gear (automatic transmission) and spool the engine up to about 3000 rpm’s and hold it there. What do you hear from the engine?
This is what I hear: There is the god awful pinging sound from the engine, like a thousand ticked-off rattle snakes. Sounds to me like preignition because when I floor the throttle, the pinging sound goes away. I run low to medium grade gas (87 to 89 oct.)
When I fist got the truck (used about 20,000 miles), I noticed the sound during light to medium acceleration between 2400 and 3000 rpm’s. Concerned, I took the truck to my caring compassionate Ford dealership who informed me that they could not hear any abnormal pinging sounds from the engine (of course). Since then, I have learned how to consistently reproduce the sound.
Thanks for helping me with this. Let me know what you hear.
Hop in your unloaded truck and drive down a straight and flat road in second gear (automatic transmission) and spool the engine up to about 3000 rpm’s and hold it there. What do you hear from the engine?
This is what I hear: There is the god awful pinging sound from the engine, like a thousand ticked-off rattle snakes. Sounds to me like preignition because when I floor the throttle, the pinging sound goes away. I run low to medium grade gas (87 to 89 oct.)
When I fist got the truck (used about 20,000 miles), I noticed the sound during light to medium acceleration between 2400 and 3000 rpm’s. Concerned, I took the truck to my caring compassionate Ford dealership who informed me that they could not hear any abnormal pinging sounds from the engine (of course). Since then, I have learned how to consistently reproduce the sound.
Thanks for helping me with this. Let me know what you hear.
New User
Joined: Feb 2001
Posts: 7
Likes: 0
An Interesting Experiment
I had the exact same sounding problem on a Toyota T100 pickup and it ended up being a loose heat shield on the exhaust crossover pipe. A $3 radiator clamp around the heat shield and crossover pipe cured the racket. Does your noise only happen in a specific gear or in all gears at the same RPM? Usually, an internal engine/transmission noise is gear *and* RPM specific and something vibrating hits it's resonant frequency in all gears at a specific RPM. Just a thought..
Tuned
Joined: Sep 2000
Posts: 417
Likes: 7
From: Olympic Peninsula, WA USA
An Interesting Experiment
I probably can't help with my 4.30 geared dually, but I do remember reading about Ford having problems with the torque converters on early Super Duty trucks. Supposedly sounds likes marbles rattling around.
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2000 F350 CC DRW Lariat 4x4 LWB 4R100 V10 4.30ls with Torklift tie-downs/Superhitch and Rancho RS9000 and Ride-Rite air springs.
1998 Alpenlite Pendelton 11'10" Slide-in camper with all options.
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2000 F350 CC DRW Lariat 4x4 LWB 4R100 V10 4.30ls with Torklift tie-downs/Superhitch and Rancho RS9000 and Ride-Rite air springs.
1998 Alpenlite Pendelton 11'10" Slide-in camper with all options.
Junior User
Joined: Nov 2000
Posts: 97
Likes: 0
From: Reno, NV USA
An Interesting Experiment
That RPM sounds a little high but you might be hearing the infamous V10 exhaust flutter supposedly caused by the funky y-pipe configuration Ford chose to use. It sounds a little like pre-ignition. I have the flutter but it's down in the 2200-2600 rpm range.
Bill McCall
'01 F250 Super Duty 4x4 Crew Cab Shorty V10 Auto 4.30ls
Fabtech 5.5" lift-all spring!, Weld Sidewinders,35" BFG MT's, RS 9000's, Velvet Rides
[link:albums.photopoint.com/j/AlbumIndex?u=1458111&a=10957692|WLDS V10 PICS]
Bill McCall
'01 F250 Super Duty 4x4 Crew Cab Shorty V10 Auto 4.30ls
Fabtech 5.5" lift-all spring!, Weld Sidewinders,35" BFG MT's, RS 9000's, Velvet Rides
[link:albums.photopoint.com/j/AlbumIndex?u=1458111&a=10957692|WLDS V10 PICS]
