avocado-pip Posted August 29, 2022 Share Posted August 29, 2022 Hello My 1998 Disco 300 tdi automatic has a problem only when changing from 2nd to 3rd it kicks down, no slipping, when speed builds up changes into 3rd gear and then 4th gear as normal. No problem with any other changes. Has covered high mileage and is original Any thoughts please would be helpful Thank you Phil Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted August 30, 2022 Share Posted August 30, 2022 An autobox can't kickdown when changing up ( a kickdown is changing down a gear), not sure what you actually mean there, can you explain? 2 Quote Link to comment Share on other sites More sharing options...
teabag Posted September 1, 2022 Share Posted September 1, 2022 ‘Kick down’ is where the gearbox can drop a couple of ratios at a time if necessary and is different to the normal dropping down a single ratio one at a time. Anyway it seems like your describing what is called ‘flare’ which is more than likely a fault with the box. But a fluid and the filter screen replacement may help, depending on when it was last done. There lots of info in the LR workshop manual which can be down loaded from various sites and worth having a copy. Below is a cut & paste of what the manual states on the symptom 7 which appears your gearbox has. SYMPTOM 4 - Slip in all forward gears Carry out main line pressure check oe No pressure FAULT - Blocked filter or pump failure oe Low pressure FAULT - Restricted filter or sticking primary regulator oe Normal pressure FAULT - Clutch ’A’ SYMPTOM 5 - Harsh engagement ’N’ to ’D’ Check engine idle speed Carry out main line pressure check oe High pressure FAULT - Primary regulator stuck oe Normal pressure FAULT - Clutch ’A’ or damper for clutch’A’ SYMPTOM 6 - Fierce shift or flare 1st to 2nd shift Check engine idle speed Carry out mainline pressure check oe High pressure FAULT - Continue with symptom 5 oe Normal pressure FAULT - Modulator valve or dampers for clutch brake CB1 and/or clutch brake CB2 FAULT - Clutch brake CB1 and/or clutch brake CB2 SYMPTOM 7 - Fierce shift or flare 2nd to 3rd Carry out mainline pressure check oe High pressure FAULT - Continue with symptom 5 oe Normal pressure FAULT - Modulator valve or clutch ’B’ damper FAULT - Clutch ’B’ Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.