Moderators Laird_Scooby Posted July 16 Moderators Report Share Posted July 16 1 hour ago, BN Coupe said: Changes from 1st to 2nd were slipping and thumping, That sounds suspiciously like a sticky 1st/2nd gear solenoid, i have one for my CR-V but the fault (that i found when i went to change the solenoid) was a broken wire on a pressure switch on the box (think it was 2nd gear pressure but might have been 1st, can't remember or think just now), repaired that and all but eliminated except for the odd occasion when i've either turned or braked sharply. Link to comment Share on other sites More sharing options...
BN Coupe Posted July 17 Report Share Posted July 17 Some of the other changes were less than perfect too, but 1st to 2nd was the worst. One day the transmission light started flashing, indicating a gearbox fault. I've never had this before. I drove home super-gently but everything was fine. The light hasn't been on since. Could it have been a sticky solenoid? At the moment, gear changes are as they should be. 2 Link to comment Share on other sites More sharing options...
Moderators Laird_Scooby Posted July 17 Moderators Report Share Posted July 17 It sounds very much like a sticky solenoid, probably due to lack of maintenance of ATF but as you've done some part-changes, that should help. Doing another round of part-changes may improve things further as well. Mine still gives the odd harsh/slurred 1-2 change but is getting much rarer now. I daresay when i do another part change in spring next year, it'll bring it up to near perfect and i would think similar for you. I'm NOT SURE this is the right one for yours but gives you an idea of the animal you are looking for. Might also be worth checking the screens in yours (filters on the solenoid fluid inlets) are clean/clear. https://www.ebay.co.uk/itm/305410690214 The biggest part of the job is stripping the ancillaries away for access, typically you need to remove the air cleaner box and a few other bits to actually see the solenoids. Worth having a look on YT for videos for changing gearbox solenoids on the Accord V6 or, as many of them are likely to be American, transmission solenoids. Here's one i found : ........... and the search i did to find it : https://www.youtube.com/results?search_query=accord+v6+transmission+solenoid Happy vid watching! Link to comment Share on other sites More sharing options...
BN Coupe Posted July 18 Report Share Posted July 18 Thanks Dave for your trouble. I don't really understand a lot of this stuff, so it's really helpful to have it explained by someone who does. Interesting video. If I've understood it (and you) correctly, my solenoid stuck, leading to poor changes and a flashing transmission light. But it didn't stay stuck, so suddenly gear changes were back to normal and there was no flashing light any more. Do you know if this would have logged a diagnostic fault that can be read? The last time the ATF was changed - about 500 miles ago - the old stuff was quite black, according to my garage. I think it was you who recommended another change after 1000 miles, so I'm halfway there. 1 Link to comment Share on other sites More sharing options...
Moderators Laird_Scooby Posted July 19 Moderators Report Share Posted July 19 19 hours ago, BN Coupe said: Do you know if this would have logged a diagnostic fault that can be read? Possibly. There doesn't seem to be a hard and fast rule as to what faults are logged, some are and some aren't. I'm sure whoever designed the software did put rules in for logging faults or not but i've never worked it out - software really isn't my thing! However, if you plug in your code reader, it may show up a logged fault, probably a pressure switch fault at an edumacated guess. This will popint the way to which solenoid is sticking and not letting the pressure through. However, you may also find (like i did) that the wire to said pressure switch is broken or the switch itself may be faulty. All would give similar symptoms so it's really a case of investigating and see what you find. As you go through and find what's wrong, you'll realise there is a pattern to how it all comes together to work which will help your understanding of how it all works. Always worth remembering the old computing acronym of GIGO - Garbage In, Garbage Out. In other words, treat the fault code as a potential red herring as it may not be the indicated fault but one that gives similar symptoms. 1 Link to comment Share on other sites More sharing options...
BN Coupe Posted July 19 Report Share Posted July 19 Thank you. 2 Link to comment Share on other sites More sharing options...
Administrators hughezee Posted August 12 Administrators Report Share Posted August 12 On 7/17/2024 at 12:52 PM, BN Coupe said: Some of the other changes were less than perfect too, but 1st to 2nd was the worst. One day the transmission light started flashing, indicating a gearbox fault. I've never had this before. I drove home super-gently but everything was fine. The light hasn't been on since. Could it have been a sticky solenoid? At the moment, gear changes are as they should be. 95% of the time if the transmission starts to misbehave following an ATF change, a simple reset of the ATC unit will instantly solve it or just some steady driving until it relearns. Basically, the ATC doesn't compensate for wear or fresh slippy fluid, unlike more modern automatics. 2 Link to comment Share on other sites More sharing options...
BN Coupe Posted August 12 Report Share Posted August 12 Thanks Stu. What's the procedure for this? 1 Link to comment Share on other sites More sharing options...
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