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SpidersWeb

No Park or Reverse

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Sorry for yet another transmission topic, but have another query :unsure:

I'll tell the breif story first so you get an idea of what is going on.

- I purchased a 4HP22 auto from a 1990 535i auto, to go in my 1989 535i auto.

- Mechanics fitted it up and found the connectors didn't match (6 pin vs 7pin)

- I did some research and found that the valve body could be swapped over, so it was.

- Car is all done with a recon'd torque converter etc and drives fine

- Except it doesn 't work in Park or Reverse.

Now I've moved up to Hamilton, so I have to drive the car up here before I can work out the P/R problem.

I was told the transmission was in good condition etc, had done 193,000km. The original died at 250,000km because coolant got in to the ATF.

So now I need a bit of advice so I can organise what needs to be done next.

A comment on bmwe34.net mentioned that R could be blocked by a faulty magnetic solenoid that has jammed up.

I also read that the difference between the 89 and 90 trannys was a 'Reverse Lockout' solenoid, but then we used the 89 valve body so that solenoid wont be there now.......... in theory

or am I going to need to find another transmission.......... again.

Is there likely to be a cheap fix for this? Any suggestions? My father is picking it up tomorrow or wed, so I can ask him to test anything you might need to know.

Reason I'm asking now rather than just sending it to marshalls transmissions or something is because its in wellington, and we need it fixed so we can list it for sale, so if I need to organise another transmission, I'd love a heads up.

Thanks again!

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I have spoken to Kevin @ Auto Trans..our transmission specialist (09) 3092538

He said that he has not done that, if pin configeration is wrong, transmission is probably slightly different.

Did the "mechanics" check valve body porting before changing valve bodies ??? The porting is likely to be different. This would need to be rechecked...if its different you'll need to do a correct trans swap or fix the old one.

Cheers

Glenn

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