I recently bought a 2001 SuperCrew 5.4 L 4x4 with 72K. When accelerating there is a sort of ringing jingling noise that seems to come from below the truck. My guess is something metallic vibrating. A mechanic has looked the engine over and the noise is not present when the truck is in park. My mechanic says the engine is fine and the noise does not involve the engine. He does not work on transmissions so he couldn't really advise if the noise might be coming from there. The best options at present are the transmission or the exhaust. I have taken the truck on 3 six hundred mile road trips towing a 3000 lb trailer and everything worked great so I haven't been too worried about the noise. I also know that it isn't the limited slip differential because I had the clutches replaced by the dealer and the noise was present both before and after that repair was made. The noise only seems to come when quickly accelerating. The noise isn't present when just cruising or when accelerating slowly. Any thoughts would be appreciated.

 

Ford has tons of problems with the catalytic converters causing these problems. If it is the tranny I would expect the fins to be falling out of the converter. Does it seem to stall higher than it used to?
Alan

 

"If it is the tranny I would expect the fins to be falling out of the converter. Does it seem to stall higher than it used to?"


Thanks for the idea on the catalytic converter. I'm not sure I understand your comment though. What do tranny fins have to do with the converter?

Also, what do you mean with regards to stalling higher than it used to? The truck never stalls so I'm guessing your talking about something I'm not familiar with.

Thanks for taking the time to help me.

Andrew

 

I was referring to the fins inside the torque converter. Stall speed is determined by rpm. To check stall speed put the vehicle in drive, put you left foot on the brake as hard as you can. Then put your right foot on the gas until either the wheels start to spin(the brakes can no longer hold them) or the engine can not rev any higher. The rpm you reach is the stall speed.
Alan

 

I posted this in the exhaust forum since it really is more germane to that topic, but just in case you don't check that, I owe Dirtydog a big thanks. I ran to the local Meineke to have the catalytic converters looked at because of DirtyDog's catalytic suggestion. Meineke confirmed that they were shot. But he went on to inform me that they are covered by a 8 year 80K warranty mandated by the government. My truck has 78,300 miles on it so I just slip into the warranty period. If dirtydog had not replied, I probably wouldn't have run the truck over to Meineke to have it looked at and wouldn't have discovered the problem until after the 80K warranty expired. Thanks.