Ok, I wanna say my car is 90% ready to run again. But something is just not working right. Recently cleaned/flow tested injectors, Installed new fuel pump. Cleaned gastank and put fresh gas. It seems the injectors just stop fireing once the car is running. Please note: This car has not been started in about 8 years and has a Mazda Reman with ~300 miles on it. I have checked:

1. Injectors were cleaned so I know they flow fine.

2. Checked harnes for injector pulse - Tested fine.

3. Replaced fuel pump and confirmed ~43-45 psi at the maze of fuel/vacuum lines. (Lines that feed the fuel rail)

Oddly enough right when I got to the car today w/o doing anything I just tried starting the car and it started fine, ran about 30 seconds and died. Every atempt at starting since will crank for about 3 seconds and fire for about 2 seconds, then crank again for a few seconds and fire for a few seconds (and repeat)

Plugs are new, spark seems fine. Starter fluid makes the car start right up, hinting a fuel lacking issue.

My theory: The car starts, detects a major malfunction somewhere and shuts off the engine.


Any rotary experts around Austin wanna help a noob. I will be willing to pay but im too loaded right now

PLEASE SOMEONE HAAAAALLP!

 

Really random guess here, but have you checked the coil packs or something like that?

 

actually no, I did not suspect a spark issue. as mentioned, every time I spray starter fluid it starts right up. I'll prolly take my vid camera out there tomorro and get some videos of what its doing.

 

think back to basics.. what does a car need to run, spark , fuel, and air, a great way to check spark is get a old spark plug , unplug a wire put the old spark plug in it, put it against the block or somthing metal, pull the EGI fuse, have a friend or somthing watch the spark plug and see if it sparks.. do that to all 4 , then you'll know for sure if you have spark, also check your timing. it seems that you have your fuel figured out , and air.. well my guess is its getting it just fine! but be aware for vaccume leaks. just my guess

 

two things come to mind..first is having the AFM plugged in..if it is not the cars starts and Dies,over and over..another thing is Do you have the fuel Lines hooked up Correctly.?.check the IN and return Rubber lines..Going FROM the Fuel filter they Should go to the Primary Injectors First..then Secondary Out to Return line to the tank.

 

Yeah, checked the fuel lines and they are correct. One thing about the air flow meter... It is plugged in to the harness but does not have the hose on it from afm to turbo. Weird thing is when I got the car it had a straight pipe off the turbo to a cone filter, no afm at all (was in the trunk). Another possibility with the afm is this one is untested from a box of parts, I traded the original one for this one because the one that came with the car had flaky, peeling spray paint on it. so I traded for one that looked new. My friend has a few AFM's layin around I'll run one straight off the turbo and try again for now. Thanx.

 

The ECU does not shut down the engine on a malfunction. It can put it in the limp mode, but will not shut the engine off.

 

there shouldn't be any hoses running between the AFM and the Turbo..... wait..... ok, you mean the TID then? well then there is your problem! You MUST have the AFM in line with the air intake, otherwise the computer is reading NO air.... attach it to your cone filter, then run some piping to the turbo. Done. Have fun with your new baby...... just be sure to break it in first!

 

make sure you have SOME piping between the AFM and the turbo as well.... dont just mount it directly on or you'll be melting it soon.

 

compresion,fuel n spark. air?close though

 

Yeahhh... As mentioned, that "one" thing is what's causing your car to die repeatedly.

 

my bad.. brains been very slow latley

 

WOOT we have several winnarz!

My previous lack of knowledge on these cars led me to assume that it didnt flow that much air and the afm would just read slightly off, but the car would still work. After the above mentioned statements, I now know the afm has to be hooked up. (I still can't find a stock air tube) But it looks like im going to do a custom cone filter setup anyway now.

The result:

THE CAR RUNS NOW!!! After 8 years and 2 owners later. I drove it today under its own power around the lot.


I got to use the lift today so right when it became mobile I drove it right on to the lift and checked the exhaust leak. Aparently right off the turbo (first cat) had 0 bolts holding it on and the gasket was half gone. Fixed it fairly quickly but upon last inspection I realized the o2 sensor wire was going right through the exhaust pip (made its way right through the center of the pipes before bolting them together) So I had to take it all apart and do it again, this time making sure the o2 wire was outta tha way.

But now:

It runs ok, but held a steady 2-3k rpm rev. I didnt have it on long enough to really warm up tho. But after about 10 seconds the check engine light came on so now its time to start diagnosing. So...How do you check CEL codes on a rx7?




THANX TO EVERYONE'S INPUT!!! I OWE YOU ALL A BAG OF CHEEZY POOFS!

 

Also I noticed the Air bypass valve is blowing alot of air. I just split the hose from the Pressure sensor to run the bov, is this not where it should be run?

I kinda wanna run this bov:

But which vacuum do I use or do I need both???

 

Downloading the CEL codes on an S5 (like yours) is fairly easy. First, ground the initial set connector. Its a green one hole connector located in front of the driver's side strut tower. Just stick a piece of wire in the connector and ground it to the frame nearby. Then, turn on the key (don't start the engine) and watch the CEL light on the display. It will flash out the codes in order. Long flashes = 10's; short flashes = 1's. So if you see a long one followed by 3 short ones, the code is 13. If there is more than one code, it will be flashed after a short pause. Look the codes up in the FSM.

Another thing...no one has flamed you yet about your thread title. Its not cute and is very annoying. In the future, title your threads with some form of description of your problem. Don't use hellllllpppppp!

 

My car did the same thing as your before; turned out I was in such a hurry I didnt manage to plug the AFM connector in all the way.

 

Thanx and sorry, the frustration went to my head