How Can I Unblock This Powershift Solenoid?

[zakmuh]

Hi All,

My cousin has this 2011 Ford Galaxy diesel van and its automatic gearbox stops working after shifting it to N or P from D. Car needs to off and then start back again to move the car.

Gearbox- 6DCT450 (same one used for Volvo XC90 as well)
Mechatronics- OE 1770618
Solenoid- 9040 TM14/106 N and 7M5R-7G494-EA (two set of number series)

We've managed to got the blocked solenoids out of the mechatronics. Solenoid's ohms reading is around 8 ohms I think, but when powered it would make a light ticking noise unlike rest of the one.

Please could anyone suggest me a way to dismantle solenoid body, so that I can give it a good cleaning?

I could see tiny metal debris on the nose and all over the mechatronics. I just need to loosen the clamped nib but its very strong!! Is there a special too that I could buy??

Some pics below...the one taken out is B1 on the pic

Thanks in advance







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Edited by zakmuh on Tuesday 28th November 13:13

Edited by zakmuh on Tuesday 28th November 13:21

[zakmuh]

Thanks for your reply.

We're happy to buy new ones but not available with dealer-only the complete mechatronics with all the solenoids we have to buy for circa £1500, they say.

[zakmuh]

souper said:

........ those tabs on the back look like they'd prize back and maybe push the inner out.

Superb inspection mate!! I'll try undo that at the bottom and see what happens then. As you've said, it looks like the entire inner part will come out from the bottom.

I'll try this tonight and keep you all posted.

Cheers for now

[zakmuh]

Thanks you very much.

I've contacted those American guys for replacement solenoids and waiting for their reply.

Souper, one of my pics above is from that PDF.

I've made some progress cleaning the solenoid. I used my air compressor and blew air into the valve from top - now its ticking when I power it. I tried this for all other one which wasn't ticking are now working fine.

[zakmuh]

Hi All,

I'm back again. First of all, many thanks for your replies. My cousin lives down in London and I'm up here in Nottingham. So I only get time to deal with it on weekends. So I've got an update on this for you...

So this weekend we put back the mechatronics into the gearbox and did a test drive. Now the gears would only shift to 2nd, 4th and 6th - 1st, 3rd, 5th and reverse will not engage! We did a 30 mile test drive on North circular road - with these 3 gears car is going forward okay.

Cheers for that Youtube video. I'll open up the solenoid, clean it and try it again. In the meantime I'll try to contact Getrag and others to hunt for those solenoids..

If you have any further advice, please do share it

[zakmuh]

Hi,

No, not yet. Still trying all sort of things but no luck! Our last option is to remove the entire gearbox and check for any mechanical issues.

Has yours been sorted?

Cheers

[zakmuh]

Hi

I've managed to fix the issue

A quick briefing.....On a day the engine light came on and then car stopped moving. Restarted it then car moved okay but after 2 mins or so it stopped moving again. These codes turned up on the scanner:
P0766-Shift Solenoid D Performance or Stuck Off
P0771-Shift Solenoid E Performance or Stuck Off
P2714-Pressure Control Solenoid D Performance Or Stuck Off

So I removed the mechatronics unit, removed all the solenoids and valves and cleaned them all thoroughly, including the valve body passages. I tried to open up the solenoids but I couldn’t. So I just cleaned them with spirit and blow dried them. I fit them back into the gearbox, topped up the oil (around 5 litres I think), erased all the codes and that’s it. The car is back on the road now and all gears are shifting nice and smooth

I’m going on holiday this weekend for a week. Once I’m back, I’ll be test driving it for a week or so, to make sure it’s fully fixed. Until then I wouldn’t call that the issue is ‘solved’. If it’s actually solved, then I'll do a Youtube video + a write up and post in a separate thread.

From my extensive research I’d draw these conclusions with regards to any auto gearboxes.
1. Gears not shifting and no engine light or warning lights on – mechanical issue
2. Gears not shifting with warning lights on – electrical issues such as stuck/bad solenoids and/or wiring connection issues and/or sensor issues.


Good luck guys

Cheers