How do i install a new starter motor on a 1982 mazda rx7 13b manual?

Bad bendix or starter installed without correct shims.

A replacement will just bolt on. Follow the existing one back and you'll find a plastic cover that should remove. Under that you'll see the wire bolted down.

Hi Cliff, Locate positive + battery cable,trace its path,it should lead you to starter solenoid connection.starter motor will be at engine to transaxle mounting.area.

You're going to need to replace starter. It has a dead short.

when replacing a starter motor, some have shims or spacers to make correct distance when installed. if these wre left out on instalation this will cause the problem. another problem can be incorrect number of teeth on starter motor which will cause grinding sound and prevent correct meshing of teeth on flywheel
it is also common to get a bad new starter
check solenoid

shim the starter before you chew off ring gear teeth

try installing a new ignition switch maybe burned out. get a repair manual to do so. its not hard but buy it from a auto shop with life time warranty $100. - dealer 200 and very limited warranty.

as for the fans not starting there are 3 relay switches by the battery. look like little sqaures. when they burn out your ac fans do not come on or cooling fans. there about 6 or 7 bucks a piece. if you put all 3 new ones its prob the fan motor. they cost $50 and you can do it your self without a repair manual. you may have to cut the original wires splice them and retape with with electrical tape to the new fan motor. or you can buy original fan motors from the dealer for $150 each!

keep a spare in your trunk because when that relays goes out and your ac does to you will want to put a new one in asap where ever you are.

also if its cranks and does not start have a mechanic look at the wires connecting to the starter. sometimes they rot and make poor contact and do not get enough power to start or a bad starter?. had that on my 99 mazda lx. if you are driving an automatic take it the dealer or mechanic to have them put some type of cooler for the transmission or else it will overheat and cost you a new one of 2000. the part is 300 and need a mechanic to install it. that is a very known prob with the automatic transmissions. it should be a recall fortunetly i have manual transmission.

Write down the radio's activation code prior to disconnecting the battery' s negative terminal.

Remove the air-intake duct and the air filter housing. (assuming this your car is 4-cylinder)
Remove the bracket that runs between the inlet manifold and the starter-motor.
The starter-motor is by the left-side of the transmission over the axle-shaft.
Disconnect its solenoid wire and the positive wire attached to the starter-motor.
Remove the three 14mm bolts holding it up.
Once taken out, exchange it for a rebuilt one at your local autoparts store.
Installation is reverse of removal.