DivineOne

1990 GXL

Surging idle are 400-900. Went to smog station and they could not time it because of the idle, so it failed. tried adjusting the Air Adjust Screw but when i jumper the initial coupler, it just idle even lower and does the same surge/bounce. Also, when i adjust the Air Adjust Screw it does nothing. Neither raises nor lowers the idle. Call Mazda and got a APPT. next week but is there anything I could do? my questions...

1. Why does't the Air Adjust Screw Do anything when i turn it.

2. Counter Clockwise = let's air in? Clockwise= Stops air coming in?

3. Could this be the TPS? don't want to touch something that might not even be the problem

4. Can anyone link me to a FULL write up? I be searching but the thread always gets derailed into something else with bits of info on each thread.

thanks for the read.

diabolical1

iTrader: (3)

have you checked (and i mean thoroughly) for vacuum leaks? that should be first on the list.

when you're you don't have a leak, check other stuff. have a look at this link: https://www.rx7club.com/2nd-gen-arch...oblems-334730/