ok i have a 87 gxl rx7 w/ a 13b (na) duh. It has a weird idle problem, it idles at 4k+ rpms. i messed w/ the idle screw (had to put a new one it) and it idled down to 1700 to 2100 (bouncing). im new to rotary so lmk what you think

 

thats not really an "idle screw" liike in a carbed car, its a throttle posistion sensor adjustment screw. Go on rx7club.com, and find out how to adjust it properly, as i own a 1st gen, and dont have to deal with it. But i recall needing a test light that you make yourself, pretty simple, all you need is a few wires & like 2 led builbs...any way should all be on rxyclub.

 

first thing that comes to my mind is a vacum leak

 

heres a pic of what i replaced (thats what i was told i needed) oh and when i turned the car off it idles back up to 4k+

 

This link may or may not contain an RX-7 service manual in PDF format by the good folks at RX7city.com....It's not my place to say for sure...

RX7 CITY 1988 MAZDA RX7 FACTORY SERVICE MANUAL!



Best of Luck.

 

haha thanks. and welcome??

 

welcome to the site that is but i need a trouble shooting guide i just wanted to see if anyone had any quick knowledge of what it would be ya know im thinkin about runnin to advance and gettin the haynes manual


ps i have to floor it to get it to crank (im just tryin to piece this together w/ all the weird stuuf)

 

you're missing the screw and the spring. you dont really ABSOLUTELY need the small lights to adjust it. when you get the screw and the spring, turn on the car on and turn on the screw untill it stops fluctuating rpms. it wont be 100 percent accurate like with the lights but it will quick fix the rpm problem. you're emissions pump has been taken off so look around there for any leaks. it also looks like you have and aftermaket cone air filter so you might have to put that into consideration.


oh and FYI almost ALL 2nd gen rx7s have this problem and even after you have adjusted it it will do it to you every now and then.

 

the threads on the tab where the screw shold tap into are stripped so all i did was put a bolt with a washer and nut on it w/o the spring and i tightened if i NEED the spring lmk ill do it tomorrow and ill tell you what happens

 

more pics of everything thats messed up

one vacume line (dont know where it would go...)


a couple others (dont know either)


a blocked off sensor (no o2 sensor)


broken sensor


no tubing on one blocked other


my rigging


2 plugs not plugged it (no where to plug in)