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I have a 1992 ford Ranger 3.0 with A4LD automatic tranny that broke down on me. I got it rebuilt but they put servos for a 4.0 in it and said it would work fine.
My problem is now it hesitates then slams into reverse. Also when cold it revs to high rpm before shifting into second.  I can manually shift it perfect. My question is will the servos for a 4.0 engine cause this? Or what could be the cause of this? Please help thank you.  

The 4.0  servos  are just fine,
It`s the rest of the trans that need`s  attention,
First  ...
Does it shift  late into second gear  or  bypass it and go right to third ?
a Low  or no   Vacume  problem will cause   a late shift

but rev. should not DELAY one bit with this problem . But it will bang
Take Her back  rossmed ....  
Hog Rider

Hey thanks for the reply.  It hasn't ever skipped a gear it just shifts late and hard into second. It shifts at the right revs after that it just shifts a little hard with a mild lunge.  when shifting from park to reverse it delays for about 2 sec then go hard into reverse.  when the weather is cold it shifts into second at high rpm. when the weather is warm it shifts into second ok. If you are in drive it will shift normally into reverse. thanks for your help.  

Check your Vacume  Reading   With a Gauage you should have about 19  in ,and also inspect for  Transmission fluid in your vacume line going to to your  Vacume Modulator...  
Hog Rider