Hello everyone! I just picked up a 2000 Accord EX (2.3 Vtec) with 164k that has tranny issues.
When its cold the transmission will not shift out of 1st gear, until till the CEL came on, and the D4 was blinking. It would then go into limp mode-what seemed like 3rd gear, way too weak. If you put the shifter in #1 manually, it would engage (little rough), but you could at least accelerate. About a half mile down the road, you can pull over, turn it off, and restart. The CEL remains (shift malfunction P0780), but the tranny stays out of limp mode. Upshifts/downshifts fine until you go from 2nd to 1st at a stop. Once stopped for half to one and a half second later, there is a significant jolt in the tranny. I assume this is going into actual first gear, if you dont wait for the clunk after a stop, it makes a hell of a racket, until a gear engages roughly.
That was yesterday. Today I drained/refilled the ATF with Amsoil synthetic ATF, and it shifted fine when cold -twice, but you still have to wait for the clunk (although noticeably better now) at a complete stop.
What is this clunk, and is it leading to catastrophic failure?? Im going to drive it for a week and flush the ATF again, but hopefully it will buy me some time! Here are some pics
BTW, what is missing by the shifter??
When its cold the transmission will not shift out of 1st gear, until till the CEL came on, and the D4 was blinking. It would then go into limp mode-what seemed like 3rd gear, way too weak. If you put the shifter in #1 manually, it would engage (little rough), but you could at least accelerate. About a half mile down the road, you can pull over, turn it off, and restart. The CEL remains (shift malfunction P0780), but the tranny stays out of limp mode. Upshifts/downshifts fine until you go from 2nd to 1st at a stop. Once stopped for half to one and a half second later, there is a significant jolt in the tranny. I assume this is going into actual first gear, if you dont wait for the clunk after a stop, it makes a hell of a racket, until a gear engages roughly.
That was yesterday. Today I drained/refilled the ATF with Amsoil synthetic ATF, and it shifted fine when cold -twice, but you still have to wait for the clunk (although noticeably better now) at a complete stop.
What is this clunk, and is it leading to catastrophic failure?? Im going to drive it for a week and flush the ATF again, but hopefully it will buy me some time! Here are some pics
BTW, what is missing by the shifter??