Car has trouble starting, idles rough and when given gas, dies. PLEASE HELP!!
 

Sup yall, thanks for helping me last time, but now i got another problem. I have an 87 rx7, and When I go to start the car, it cranks over and starts but it sounds like its having trouble starting, when I restart it and give it any throttle, it immediately dies, like its missing something, but im not sure what it could be. Does ANYONE have any idea what this could be?? I was maybe thinking fuel pump but I just put a new one in not too long ago. Please help.

anyone have any ideas?

any body have any ideas? im stuck here.

this problem has been covered like so many times before..... make sure the car's not flooded.... check the egi fuse, and also check your ecu. My friend has been having this problem as well.

hold the pedal down when you start it and keep it held until it holds an idle. If this doesnt work then try all of the unflood tricks. If you are a newb this might scare you a bit but its very common on these cars. Do some searching and you will be good to go. If that still doesnt fix it then come back to us.

make sure you are getting fuel... take off the low pressure line direct it into a cup and then crank for a second... if fuel pours into the cup your pump is ok thats how i check mine... if you have fuel make sure its not unflooded.. what i do is i disconnect the yellow plug under the drivers dashboard and crank the car for a few seconds with the gas pedal floored, if it cranks and then dies its ok because you disconnected the fuel pump power.. then after that plug the harness back up and crank the car not touching the gas pedal... if its not flooded check the AFM... i just got done with the same problem you had with many more difficulties because of the damn AFM.. good luck

christopher

i checked the fuel pump and it was fine, but i was messing with teh AFM and i had a weird discovery leading me to think that its the AFM, tell me what u think.
I had the AFM off the airbox, and i was like tryign to clean it and i for the hell of it put my hand over the inlet and had my friend start it, and it started fine and ran perfectly until the rubber tube collapsed and it used all the air in it and then it stalled, and so i had him start it again this time with a lil gap inbetween my palm and the afm and it worked again.

Does thsi sound like the AFM's the prob?

Also, the car has 186,197 miles on it and im pretty sure its the original AFM.

PLEASE HELP!!!

i fixed the problem on one of my rx7's earlier today. Sounds exactly liek your situation. Would start and idle extremely rough and die within a few seconds. If you press the gas at all... it would die. It was a humongus vacuum leak. The two large nipples on the factory intake arm were totally disconnected. I'd check around for vacuum leaks in your situation.

i checked those already. still no go.

any more ideas?

the rubber tube collapesed? im not understanding what your saying... could you maybe explain a bit more? but so far it does sound like a bad AFM..... pull off your AFM and test it to mazdas specs below in the picture

https://www.rx7club.com/attachment.p...postid=2836770

good luck man

christopher

nm i reread it and see what your saying... well because you did this you must not have a vac leak in the intake because it stalled out with your hand there..... the flapper door should not be open at idle.... there is a slit in the side of the AFM that goes around the flapper door and that pathway for air to come in at idle with the door completly closed...... test that afm first and if it doesnt come out good thats your prob... if not then im not sure... did this happen out of the blue? or has something been done to the car?

yea something must be up, because even at idle i can hear the door close when it dies.

i tested the AFM and it looks good but it sounds like theres something loose inside of it. ANy more ideas?

I am having the exact same problem, don't know why its doing it, been messing with it for a while, Any updates?

I have the same problem, whoever finds it out 1st please post.

check the spring that pushes the little door shut. maybe the spring slipped from it's spot or something? can you rev it at all when you had your hand over the afm? and also how's your tps. i'm having troubles with that right now and the car idles a little rough and when it's not hooked up the car will start and not really idle and it will die out at 1500 rpm. just somthing to check out. hope i could help

1) read out the AFM per the FSM, paying particular attention to the door switch (first 2 pins on the AFM plug IIRC)
2) if the door switch seems bad (jumpy meter reading, or none at all), jumper the yellow 2-pin plug near the right strut tower FOR TROUBLESHOOTING purposes only...If the car runs great now, you've got a bad AFM...
3) If the car still doesn't run/ run right, it's probably NOT the AFM, check TPS/ fuel/ ignition/ vac/ etc...