My E24 automatic transmission ZF 4HP22 is acting up.
When it gets to 4th gear it goes down to 2nd gear. Manual shifting and sport mode of 1-2-3
work fine. Fluid level and color are perfect. 1987 model with ~1/4 million miles.
Is this possibly electrical from its ECU or connections, or is it time to put a fresh transmission?
Is there a big difference between rebuilding the tranny here in California vs. getting a BMW rebuilt?
Willing to do the right thing, the car ride is great, solid, Dinan suspension/chip, replaced all they key systems over the years and my youngest son is starting to drive it so I need another 50k miles out of it or until he totals it.
When it gets to 4th gear it goes down to 2nd gear. Manual shifting and sport mode of 1-2-3
work fine. Fluid level and color are perfect. 1987 model with ~1/4 million miles.
Is this possibly electrical from its ECU or connections, or is it time to put a fresh transmission?
Is there a big difference between rebuilding the tranny here in California vs. getting a BMW rebuilt?
Willing to do the right thing, the car ride is great, solid, Dinan suspension/chip, replaced all they key systems over the years and my youngest son is starting to drive it so I need another 50k miles out of it or until he totals it.