gears grinding???

[dhalewyn]

I have an old 1990 idi, Its my first truck and its only got 117,000 miles on it, but the other day when i got in it to back it out i put it in reverse and started to let out on the clutch and it just started grinding really bad and i pushed in the clutch and it stopped, and also i was going down the road and had it in second and let out on the gas pedal and it sounded like it was grinding, just not as bad, and it also does it when i shift from 1st to2cd or 2cd to 3rd and so on, but it doesn't do it all the time, if anyone can help it would be really appreciated! Thank you

[AMSOILdealer]

Is it the original clutch? The forward gears could be syncro problems. My 96 will sometimes grind going into 3rd gear, even after the new clutch. One of these days I will also change the fluid to synthetic.

[dhalewyn]

No its not the original, its got the conversion from the dual mass fly wheel to the single mass, im just really hoping its something in the clutch rather than in the trans, cause it doesn't do it all the time but it will do it in any gear, even in reverse

[AMSOILdealer]

The cheapest and easiest is to change the fluid and see if there is any improvement. If it is a hydraulic clutch check the resevior. Also check the firewall for flex. I had an 84 F-250, and the firewall metal was fatiged so bad when the clutch was depressed if flexed and did not move the clutch itself. I had someone fabricate a stell backing plate that we mounted to the firewall. I'm sure someone with more experience in this issue will post up.