# Reverse on Mazda truck

**URL:** <https://community.cartalk.com/t/reverse-on-mazda-truck/27739>\
**Category:** The Show\
**Created:** [March 14, 2009, 2:00pm UTC](https://community.cartalk.com/t/reverse-on-mazda-truck/27739 "2009-03-14T14:00:17Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![dnwidmer](https://avatars.discourse-cdn.com/v4/letter/d/7cd45c/32.png) [@dnwidmer](https://community.cartalk.com/u/dnwidmer)\
**Post date:** [March 14, 2009, 2:00pm UTC](https://community.cartalk.com/t/reverse-on-mazda-truck/27739/1 "2009-03-14T14:00:17Z")

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About a week ago, the reverse on my 1999 Mazda pickup started to not work sometimes. As time passed, it began refusing to kick in, until yesterday, I cannot get into reverse at all! Forward drives (D,1,2) continue to function. Called dealer whose only suggestion was low fluid level. Checked it and added about 3 oz. which brought it back into hatch-mark area on dipstick. Done w engine idling in “P”. Still won’t work. What am I in for?  
  
 Thanks,  
  
 David

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**Author:** ![researcher](https://avatars.discourse-cdn.com/v4/letter/r/edb3f5/32.png) [@researcher](https://community.cartalk.com/u/researcher)\
**Post date:** [March 17, 2009, 5:50pm UTC](https://community.cartalk.com/t/reverse-on-mazda-truck/27739/2 "2009-03-17T17:50:58Z")

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The reverse band is adjustable by going to a longer servo pin. The oil pan has to be dropped; the servo cover removed; a test spring placed under the piston; a special tool installed; a dial indicator shows the piston travel as the ST pushes the piston up; and the correct pin length selected to bring the travel into spec. If the travel is still out of spec with the longest pin, you are probably looking at a transmission disassembly to renew the reverse band.

A part of the diagnosis would be to do a line pressure check when in Reverse. You might have a leaking servo cover gasket; a leaking valve body or separator plate gasket; broken piston ring; or servo cylinder wall irregularity. So have the transmission technician inspect the reverse servo for problems when he/she is in there to check the travel specs.

Hopefully, you do not need a full rebuild. Post back when you solve this problem. Also when you post a question like this, use the Repair and Maintenence section as you will find experts like transman614 cruising there. Hope this helps.