FB331

Runs for 3 to 5 seconds

RXSpeed16

iTrader: (41)

That's about right if you have a bad AFM circuit. I had an AFM that wouldn't close the fuel pump circuit unless it was above 65 degrees F. Other than that, it acted completely normal. So weather could be a factor.

FB331

Yea it all happened in warm weather. And now it's cold out I don't think it's weather related. Almost done work I will check out afm

FB331

Can't get it started its freezing out so I will try on the weekend it's suppose to be warmer

FB331

Well someone stole my 84gsl DD so I have a few days off work to get it figured out. Cops found it and are fingerprinting it so I gotta wait and I don't know if they effed my 12a so I will find out then go from there. Today I got a new AFM from p n p with k&n air filter for 3 bucks lol. Waiting on getting a tent garage too so I can get somewhat out of the wind.

FB331

Switched out AFM and no luck only this time I think the cold weather helped cause it would struggle it seemed to get fuel as soon as I let off the ignition it dies

Really stumped here and having no car sucks so I need to get this bitch started

RXSpeed16

iTrader: (41)

Did it run with the fuel check connector jumpered or did you just try swapping afms? From your explanation, I take it the car cranks and runs a few seconds with the key held to start. Then immediately dies when you put the key back to the 'on' position?

dwb87

iTrader: (22)

Perhaps you have a bad circuit opening relay.

FB331

I tried jumping the fuel connector couldn't get it started so I switch AFM and yes now only runs when key is turned like u said rxspeed

If I had a bad circuit opening relay what would I be checking for

dwb87

iTrader: (22)

So, as long as the fuel connector is jumpered and the key is turned to "START" it will stay running?

This is a picture of the circuit opening relay:

(It is located under the steering column.)

FB331

Ok I used the yellow one by the AFM I'll try that one tho it's the two bottom ones right

dwb87

iTrader: (22)

It's the same concept. Try jumpering those two bottom wires on the circuit opening relay. Then try starting the car.

Mobius

Congratulations.

You actually have a super awesome car. I love this car. I had five of them (Two of them I personally rebuilt the motors for). As a matter of fact, I have one 13B engine still sitting in my garage after I cut up the "shell" with a torch.

Get ready for every shitty annoyance this car offers....(I'm sure you know). The same exact thing you mentioned like; doors not working X 10. If you get a lawn chair out, sit in front of it with six-pack and stare intently at this car long enough; something will probably break right in front of your very eyes.

I could tell you some stories about this sassy-lass, that would be downright hilarious.

The 2nd Gen RX-7 always has a place in my heart.

Good luck with this car.

Always glad to hear someone is carrying this torch. My current project is an 87 Toyota 4 Runner.

So when you say "help".....well let’s see. Please post your endeavors with this car at will.


Can't wait to see how fucked up, or not fucked up this car is for its age.

Best regards,

Michael.

FB331

87 yota runner reminds me of high school 4 years ago man love that model. girls love when the topper comes off. Used to hit my buddy's starter with a broom handle to start it every time and no speedo lol. Straight six right same as an older supra or Cressida ?

Mobius

2.4 L SR5 with no ***** and about 15 MPG (maybe). Super charger. Wonder what that will do?

No girls either. The Jag (god rest her soul) would be better for that.

Now. With every 86 rx7 I've ever dealt with, it seems to me that perhaps you're not approaching the problem with the proper oversight.

Let me preface this with a word of caution:You bought a demon. But you wanted it. fair enough because its an awesome engine never-the -less.

Okay?

Changing out AFM's or BAC's etc sounds like a bunch of **** to me. Considering I've done that with no difference except maybe an ever so slight change in idle.

So from the time that you bought this car, from What's his face who sold it to you,
he happened to be surprised that it actually started.....right? What was the abient tempature at that time? Much different from say, now?

Because I can attest to the fact that Cold starting problems and weird idling (between 750and 1500) are common place for the given circumstances.

Let me give you an example: I used to go out to my 86 and crank it for about 2 minutes.
(I lived in Colorado)


Then I'd come back to it and about 10 minutes later and it would fire up immediately.

There are myriad of problems you could be facing. But changing out AFM's or BAC's are probably a fools errand.

(Sorry if I'm wrong). But you bought a demon. A potentially awesome demon give or take.

The point is. You have a harpy like succubus of a car that will lead you down many winding paths of nowhere without a "workflow" understanding of why it’s ******* your **** up.

Best of luck!

RXSpeed16

iTrader: (41)

The instant change from running to off indicates something electrical. If it's the fuel pump, the residual pressure in the lines should let it run and sputter a bit. If it is actually running, not just cranking, that seems like the ignition is cutting out or you have a large vacuum leak that kills it once the ecu leave the ultra-rich cranking fuel map.

Test lean mixture by shooting carb cleaner in the maf as you start. If it stays running you are running lean.

Check for 12v on the + terminal of the leading coil pack with the key to 'on'. Test ignition by watching an unplugged plug wire while cranking.

I'm not exactly clear what you did between adjusting the idle and not starting parts of this thread, so list/check those items first.

satch

iTrader: (1)

And at the fuel check connector there are two wires, one being Black while the other is Brown. W/key to on the Black wire should have very close to 0 volts while the Brown wire should have 12 volts. A ground is needed on the Black wire or the Circuit Opening Relay won't work. At the Circuit Opening Relay, the B/W wire located in the top row, center position should have 12 volts w/key to on.

FB331

Possibly I messed with the variable resistor so maybe that's part of. I will shoot some carb cleaner in there and check leading coil if that doesn't work I will start working backwards

RXSpeed16

iTrader: (41)

And try adjusting the screw on top of the UIM into the manifold. This should richen the mixture and may help with starting. I'm just trying to give as many ideas as I can before you brave the cold weather and head outside to work on it. If I'm overwhelming you, feel free to tell me.

FB331

Lol thxs by the screw on top ur referring to the air adjust screw. Doesn't the car have to be warm and initial set have to be jumpered to do this correct? And the help is appreciated keeps my find off my stolen car. insurance is useless and cops don't know when they will be done

RXSpeed16

iTrader: (41)

Yeah that's the one. To do it correctly, yes it should be warm. I'm pretty sure I've gotten the car to stall playing with that screw, so it's effect is significant. If it's currently so far off that it can't keep itself running, then go ahead and play with it. Worst case, your car won't start....oh wait...
Sorry to hear about the other car.

FB331

Did some adjusts on the screws like was suggested and Got it started but just wanted to die unles I gassed it and smoke was coming up Into engine from cat converter. Would that cause my symptons? Would The catalytic converter being clogged that is

FB331

Big update on stolen car in Canadian section it's nutty professor and I'm cereal

Mobius

Well, that's a good question. Are your catalytics clogged?

You have pre-cats and a main cat if memory serves.

Why not unbolt the exaust manifold at the main catalytic converter? (the one right by the tranny. It'll be loud. Very loud.

If you do unbolt the main cat, those two bolts are probably rusted-heat tempered to all hell and will snap right off, so have some new bolts and the exhaust gasket at hand if you do. Can't remember what heat shields might be in the way. Those screws will probably also snap off.

FB331

Question about rb down pipe and presilencer. Is it hard to install yourself I have not found many threads about na exhaust especially without going with header just down pipe and presilencer. What is this about 5 and 6 port activation?