stargazer_61

Hello,

I have a '96 Mustang GT Conv. w/AT. Was running just great after new plugs/wires. Drove it on an 50 mile round trip, then went out a few hours later and it started making a loud, metallic noise that increases with engine RPM. I cannot isolate where it is, but it is not the water pump, as I removed the belt and the noise persisted. The noise does not go away with engine warm-up. It does seem louder at the front and underneath near the transmission, but that could be reflection. I've listened to various locations with a hose and cannot hear it on the inside. Could it have lost a piston pin?

monkeydude3

hmmm.... I take it the oil level is good??

how many miles on your engine. What kind of noise, is it a tick, tap, knock, ??

stargazer_61

Thanks for replying. Yes, oil level is good, though I cannot be sure of the pressure other than what the instrument panel shows. The engine has about 127k on the clock. It is definitely a tapping sound. This started suddenly. I had put in a new radiator a couple of weeks back, so I spent quite a bit of time with the hood open and the engine running. Nothing else strange, no overheating. I am stumped!

wildazme

could be the loose spark plug syndrome these cars have.

stargazer_61

Thank you. I'll have a look at that.

SpeedChic240

Okay, I will be perfectly honest with you, I don't know much about the mechanics of cars. However, just recently my F150 started making a *pinging* noise (it sounded like something hitting on hollow metal) that increased as the RMP's climbed just as yours is doing. A week later the transmission went out[&:] This same exact thing happened to our Ford Explorer a year earlier. Like I said, I don't really know much about the innards of cars, but if its a hollow metal pinging sound BEWARE!

stargazer_61

Wow! Thanks for that info. Did yours happen suddenly, or did it come on slow? It does sound pretty loud down by the trans, and I thought it was just noise reflection. Anyway, I am taking off the timing cover looking for broken bits, but will definitely keep that in mind.

SpeedChic240

Came on pretty fast. It started quiet, but by the next day the pinging was so loud I was almost afraid to drive it! Then, like I said, a week later it died