this noise is like 50% of the time.. I can be driving along and then pull to a red light.. when my window is down i can hear it and its like a dinging or some noise under my car.. I just had my transmission serviced a few days ago and they said all was perfect and i noticed it the following day... when im in park or neutral the sound goes away but put back in drive it starts... im 99% sure its something with transmission since that is only moving part and all... any advice? its ilke a screeching rattling dinging noise and its random

 

that could be a loose exhaust part, clamp, cat converter shield rusted, heat shield. when the engine is drive /under load. all kinds of things come lose over time. grab a friend a do a inspection.

 

How 'bout the year, type, engine, etc.???

 

1996 F-150 XL Sing cab short bed 4.9L I6



the truck had the transmission serviced last Wednesday and like the following day I heard it happening...... you only hear it when the car is in drive and door/window is open.. I don't think it has anything to do with the exhaust but im ganna get a catback system really soon..

 

What trans, and exactly what "service" was done?

 

service has road test new fluids gaskets valves and check on computer if applied but i dont know exact kind of transmission.. its a 4 speed auto im pretty sure dont know the exact thing.. somethign liek ED06 or something?

 

It's probably your catalytic converter breaking loose inside.

 

What's the TRANS code from the door sticker? "E" means E4OD, which is probably what you have. The only other autos available would be the AOD or 4R70W.

 

its E40DE transmission

 

Well, the E4OD is known to have a few problems, but ringing isn't one of them. And most of the others were fixed in '95, so I doubt it's an INternal trans problem.

Also, there's nothing in the trans that "moves" when you're stopped in D that isn't moving when you're stopped in P or N, so that's another reason to look OUTside the trans.

If there's someone you trust who'll help, have him sit in the truck holding the brake (w/the e-brake set & ALL 4 tires chocked, preferrably with the front bumper against a wall or tree) with it idling in D while you crawl around under it listening for the ringing. Use a 3' piece of garden hose as a stethoscope.