Kstout24

iTrader: (1)

so once again my 7 is acting up. today i went to go drive it and my rpm was hovering around 1800-2000 rpm. a week ago it was perfectly fine at 800rpm and i havnt done anything to it since. could a vac leak just pop up outta no where like that?

satch

iTrader: (1)

If its idling rather high then just press upwards on the front throttle linkage and see if it drops or not. Your throttle cable could be sticking, your cruise control cable could be sticking if equipped and so on. The Fast Idle Cam might not be rolling off properly due to a clogged coolant hose running into the Thermowax etc.

Kstout24

iTrader: (1)

cant be a hose cause i just put brand new ones in no more then 6 months ago, took out the cruise control, and its not a sticky throttle cable. any other suggestions?

ace626

iTrader: (2)

Check your TPS and for vacuum leaks

Kstout24

iTrader: (1)

and how would i go about doing that? sorry im a FNG

satch

iTrader: (1)

If the Thermowax is clogged then hose replacement would not solve the problem. As it was pointed out earlier, w/the car idling press upwards on the throttle linkage and see if the idle drops to a more appropriate level. Takes as long as 5 seconds to do.

Kstout24

iTrader: (1)

i already tried that and nothing changed.

satch

iTrader: (1)

Then unplug the BAC. Make sure the AFM flapper door is not sticky. Make sure the CAS didn't loosen up and move.

ace626

iTrader: (2)

Take a look at this thread for the archive to give you some ideas/info

https://www.rx7club.com/showthread.p...&highlight=TPS

To check the TPS you need a mutimeter and you check the resistance or voltage output. Doenload a copy of the Factory Service Manual if you haven't already. From here,

http://www.rotaryheads.com/PDF/2nd_gen/

Setting the TPS should be in the emissions/fuel/control systems section

Kstout24

iTrader: (1)

thanks for the links, i think it may have somthing to do with my injectors because when i push my throttle down more then halfway when im driving my 7 boggs down until i back off the gas pedal and i have been told its a issue with my secondary injectors?

ace626

iTrader: (2)

Secondarys turn on after 3800 RPM not at any particular throttle position could be your issue if the bogging is above 3800

Kstout24

iTrader: (1)

ya thats kinda what i thought too but i figured i throw the idea out there. im totally lost in this situtation. i know its not a vacume leak cause all my hoses and gaskets were replaced.

ace626

iTrader: (2)

Try what satch suggested in post 8 your idle should go down when you unplug your BAC.

When I had a high steady idle it turned out my TPS was out of adjustment

Kstout24

iTrader: (1)

im probly gunna sound realllllly stupid here but what is the BAC? iv seen everyone throw it around but never knew what it meant lol

ace626

iTrader: (2)

Stands for bypass air control it adjusts your idle when your AC and other loads are on so that the car doesn't stall. On my 1991 non turbo it is on the passenger side of the upper intake manifold and has one metered air tube and two coolant lines running to it.

Kstout24

iTrader: (1)

Hmmm ok, ill look for it tomorrow when I got more light