thank you, that's what I thought, now what to do about it, I guess the air filter did have something to do with the #11 code

Interesting since we did have the ECU disconnected awhile ago, as I thought it needed to be replaced, when all along I just needed a new battery. I hope I can fiqure this out. Have to purchase a filter and a meter to check what you said if need be. When you say key to on, do you mean just on without starting?

Code 11, sensor at the engine measures the air temp at the engine. I guess the air filter being removed could cause the code not to be thrown if the filter was clogged but it's a bit suspicious.

Pin 2L (Green wire) of the ECU is for this sensor as it should read 1 to 2 volts at full operating temp.

alright, hope to get a filter this afternoon and a meter, too. I know how to get to the ECU unit (better if your a pretzel) lol, how or where is this AFM sensor in case I need to replace..or check that wire

Yes. First position is ACC and the next position is on.

thank you so much, you've been more then helpful, I'll log back in later with an update. Have a great afternoon everyone

Napa doesn't carry this filter, she said it should last a life time and to try soaking it in Dawn, so it's in a bucket now...bought a meter to check the retractors, interior light, wipers and on and on. Good news however, bought a window switch off Ebay and both windows now work. Wish I could fiqure out the squeal under the hood...

update- filter cleaned and put back on, limp mode issue solved, squeal still a problem at 3000rpm+, no belt on the air/smog pump, mobile mechanic changed the larger belt (not sure which this is called) weary of checking the others as I haven't a clue, but will do my best tomorrow. Car isn't here right now. The "mechanic" is the one who said the noise was from the smog pump, but people here are saying that's impossible if there's no belt on it...Wiper wasn't working, I gave it a smack at the switch and it came on, but with a noise from the motor, slow going and won't turn off at proper position, have to time it, read here that it could be the relay switch, but not sure since it is making a rough noise at the motor

spoke to soon, car was fine a few days, now "limp mode" strikes again! on to read of possible problems that can cause this issue

question...code is showing the AFM, I've read here that "limp mode" issue could be the AFM, but I also read it could be the OMP, anyway to tell which one would probally do this. If it is the AFM can someone link me to where this is located on the car/motor, thanks

Under the air filter.

hello! ok, I read too that it's probally not the OMp since I'm not getting a code for that

is this easy to change replace?

do I need to replaced this entire piece? or is it just a sensor
http://www.ebay.com/itm/89-91-Mazda-Rx-7-Air-Flow-Meter-AFM-13B-Non-Turbo-RX7-N350-FC-/221369558170?pt=Motors_Car_Truck_Parts_Accessories&hash=item338aa7649a&vxp=mtr

It could be the whole AFM which is need of replacement or it could be the wiring/plug to the sensor which is the cause for the error code.. The FSM illustrates how to check the sensor to some extent (found in the fuel and emissions section). Once you remove the air box it is easy to get at.

thanks so much, will be working on this tomorrow, car isn't here right now, have a great afternoon!

what do you mean air box? are you talking about the cylinder air flow meter?

The air filter is in the air box.

I have a after market air filter and a plug is connected to the air flow meter, I took the AFM off and checked it for cracks, etc, brushed the connectors, is the sensor attached or inside the AFM ?I just tested for new codes, now it is different??? Here's the lastest readings....

I'm going to take again so it's longer reading, brb, ty Satch!

I think this car is making it up as it goes...lol, it needs some TLC, still has the limp mode issue after driving 15-20 mins, engine light flashes when this occurs and it won't let you drive faster then 55-60, when you try to go faster it has a jerk like or hesitation movement, when the light isn't on the car drives fine

The AFM is the sensor. Secondly, the car sounds like it has OMP issues.

I see a 27, 8 and an 11 (or perhaps a 20). The 27 is for the OMP. If you have an OMP problem it will eventually damage the ECU so continued use of the car would not be advised. A problematic TPS could cause the error code/codes for the OMP so check that aspect of things.