Alex

Hi guys. Thanks for all responses. I read each and carefully consider what your saying. This car is not suffering low revs or torque. On advice from specialist I open loom between gearbox and TCM Etax. Test every wire for continuity, even sensors wires all checked okay. Wires also looked in good condition. So I bought a new solenoid pack and fitted it. Car worked perfect for a day. Reverse and drive self propelled once I lifted of brake. Gear shifting through all gears smooth like silk. Next day after short run back to same problem. Car wouldn't reverse, rev rev rev then it would bunnyhop back. It's like the hydraulics not holding low/reverse clutch in. I've also changed the two speed sensors. Stuck ohm meter on new and old same reading so not those. Plus my Speedo has always worked fine. Gear selector is showing each gear as it's selected and you can feel it go into gear. My thinking now it's either crap in atf4 blocking new solenoid pack or faulty TCM. Remember the automatic specialist found no fault codes on Tcm. Would auto electrician test tcm? I'm going to pull solenoid pack off and crank engine see if floods rubbish out. I've seen a lot of talk of tcm relay in fuse box. Mine doesn't seem to have tcm relay in fuse box. it's got lift pump relay in that position in fuse box.

After yesterdays 30 min drive back from automatic specialist I thought check dip stick. Getting upto 70mph for some bits. Atf was in warm zone on stick and oil was barely warm. Gearbox just felt warm. One of back brakes was hotter than rest that's why stripped and re set handbrake shoes.

Reading some of that QintQ link.These box's rely on hydraulics to control gear selection. Do guys think that might be block filter/s in solenoid pack?

Thanks for that QintQ, I'll give it read. Thanks Andy. They found intermitten bindup in neutral 1st and reverse and only when cars running. If you're coasting along in neutral just before final halt it grabs as if sharp braking. The old guy did it again but cut engine and car didn't do it. I've disable abs by pulling fuse and did test drive problem still persists. I've replaced front discs and pads plus had back ones off to re adjust handbrake shoes. I did rear new discs and all pads including new shoe kits last year November. I've fitted more earthing. Nothings helped so far actually feels like its getting worse. Next job is opening wiring loom to look for obvious damage. Sure I read someone had problems with faulty alternator causing some sort of interference with gearbox. What do you guys think?

Other than that its look wiring between tcm and gearbox next to check.

Hi Guys. Right been to an automatic specialist. Met up with two lovely older professionals, who new their stuff and they're baffled. Never seen anything like it. They did series of road tests and plugged it into their computer. They're pretty sure mechanical side of gearbox is sound. As lock up only occurs in 1st and reverse and only when engines running. They think it's electrical fault. I've come back with car. The only faults found are abs related, I'll get print out for exact wording. Was something like abs speed sensor,wheel sensor on passenger side and undervoltage sensed on abs pump. I'm busy fitting new front discs and pads. Cleaned up abs sensors and reluctor rings. As I've had bad earth problem before. Solved by adding new thick cable from negative to starter. I'm going add new earth straight to tcm and abs module in case......

Oh and I've had battery terminals off for good hour and shorted across them to reset gearbox computer. No change unfortunately.

Thanks Andyb2000. I keep trying to re word my problem in Google search not having my luck.

Yes regular check but checked again today.Atf fluid looks nice pink and in warm zone on dipstick. Thanks

Just tried my obd2 thing with torque pro app no fault codes found. Can anyone please remind me how to do key dance? In case Torque pro app isn't reading gearbox faults.

Well I'm stumped. I pulled the caliper and brake pads off out of the equation. Started car up on axle stands and tried gears. Shifts nicely from park to reverse to neutral to drive. Once in gear wheels don't move i have to rev in drive or reverse to get any movement from wheels. Intermittently it'll brake sharply when lift off accelerator. Definitely think it's gearbox related now. I've ordered new disc and pads anyway. Caliper push back smoothly and relatively easy so that's fine.

Thanks bignev. From what I can see pads look nearly new. I'm taking wheels off this morning to investigate. Keep you guys informed. Thanks for response.

As title my 2.8 crd auto 2007 is braking sharp when cruising to halt, well just before coming to full stop. Also jerky when crawling traffic. Car doesn't move off when put in drive without reving on flat. Gearbox shifts through gears perfectly. I did autobox filter and atf4. Worked perfectly for last year. Could it be brake disc or caliper? Although it doesn't pull to either side under braking. No funny noises just bit clunk as if slammed on brakes just before full stop.

These heavy diesels pull alot of amps for startup. In cold it's far higher. Corroded earth in wiring harness is not unheard of. Mine was getting harder to start. Then just clicking from starter motor. I also saw dash clocks doing strange things. All gear lights lit up. Id already fitted new battery. Dawned on me the earth might be problem so tried jumper cable from negative on battery to starter motor bolt. Dash lights and gear selection lights behaved instantly and car started first turn. I'd add I did usaul checking existing earth was tight and battery terminals where tight. Battery seems to charge alot better now. And yes bad earth can cause cut out while running. And super easy and cheap to try. I need to figure how to post pic It might not totally solve everthing but help getting descent power to starter motor.

Sounds like bad earth, had it on mine. Cheap easy thing to try as well. Take your jumper cables put one end on negative and the other clamp to starter motor mounting bolts. If car turns over easier. Fit new earth to start motor mounting bolt. I left old earth just joined onto new earth battery clamp.