I've been searching the forum high and low to find a thread covering a similar situation with no avail so I'm making my first post... First off, many thanks to all who contribute on here. I use info from the forum somewhat regularly and greatly appreciate everyone's time and expertise.
I have 1997 FZJ80 with roughly 375k miles on the original engine and trans, 4.88 gears, with a 4" slee lift on 37's that is my daily driver. Recently, I've noticed a ping/screech/squeal noise (no clunk) when the truck shifts from 2nd to 3rd under relatively strong acceleration. It sounds a bit like metal on metal (which never seems good). Typically, it only makes the noise the first time it shifts from 2nd to 3rd after start and doesn't make the noise again when shifting from 2nd to 3rd as I stop and go. It does not make the noise when shifting through the other gears and no noise in reverse. If I allow the truck to slowly shift from 2nd to 3rd the first time after start up it typically does not make the noise. I'm fairly certain the noise is coming from the trans based on the location of the sound and that it's only happening when shifting from 2nd to 3rd.
I checked the trans fluid and it was slightly low so I topped it off but the noise persisted. I then drained the fluid once and refilled it (I did not do a full trans flush) and the noise continues to happen. Performance-wise, nothing seems off but I am hesitant to accelerate quickly in the interest of not causing any damage.
I thought I would post this here in hopes that someone has had a similar issue before taking it into the shop. Thanks in advance for any advice you may have!
I have 1997 FZJ80 with roughly 375k miles on the original engine and trans, 4.88 gears, with a 4" slee lift on 37's that is my daily driver. Recently, I've noticed a ping/screech/squeal noise (no clunk) when the truck shifts from 2nd to 3rd under relatively strong acceleration. It sounds a bit like metal on metal (which never seems good). Typically, it only makes the noise the first time it shifts from 2nd to 3rd after start and doesn't make the noise again when shifting from 2nd to 3rd as I stop and go. It does not make the noise when shifting through the other gears and no noise in reverse. If I allow the truck to slowly shift from 2nd to 3rd the first time after start up it typically does not make the noise. I'm fairly certain the noise is coming from the trans based on the location of the sound and that it's only happening when shifting from 2nd to 3rd.
I checked the trans fluid and it was slightly low so I topped it off but the noise persisted. I then drained the fluid once and refilled it (I did not do a full trans flush) and the noise continues to happen. Performance-wise, nothing seems off but I am hesitant to accelerate quickly in the interest of not causing any damage.
I thought I would post this here in hopes that someone has had a similar issue before taking it into the shop. Thanks in advance for any advice you may have!