Brett(87 FC GX)

hey people. my car has real trouble starting, and when i do get it started it revs to 3000 rpm ON ITS OWN!? :S then shuts off. any clues to how to fix it?

thanks

danegerous

iTrader: (10)

thats the cold start assist reving it to 3k on its own.

iceblue

Plug the AFM back in.

ABCDEfb

or adjust your tps

TheDarkRacer

and make sure your throttle cable isnt loose...

DriftingB26RX7

iTrader: (4)

if you dont want it to happen start the car in 1st

Brett(87 FC GX)

ok. whats the AFM? and the TPS? but it still doesnt solve the problem that the car shuts off?

Copeland

iTrader: (42)

Sounds like the cable that hooks up to your intake meter is disconnected or you have a large vacuum leak. Just check your engine bay for loose wires or hoses and you'll more than likely fix the problem.

Brett(87 FC GX)

i have checked my engine and plugged all leaks from hoses and the cable is hooked up to underneath my air filter

rx7-kid

iTrader: (1)

my car is having the same problem right now. I would get it to start then it would rev close to 3000 then shut down. instantly. i was thinking it might be the CAS but thats not it.

13BGTU

When starting cold, my FC does the same, But revving to 3k is normal for all fc's, but it will stay at 1k rpm while warming it then drops and shuts off, i have to do it 3 times and sumtimes gas a bit to stick it at 1k rpm.. n then its fine after that.. maybe after you start it, and goes down from 3k hit the gas a lil n see if it'll stay on.

iceblue

Then try jumper the fuel connector clip on the strut tower. After you have made sure the AFM "air flow meter" is pluged in. Check over the system for obvious majot leaks. the reving to 3k as stated is NORMAL this is becuase of the AWS system " Accelerated Warm up System" Please view the FAQ on the top of this page for acranyms. Yout TPS would have absolutly nothing to do with this.

Brett(87 FC GX)

i tried hitting the gas the whole time tapping it. and when it hits 3000 it shuts off for good. so hitting it again does nothing can you put up a pic of the jumper fuel connector

Copeland

iTrader: (42)

Try a search. It's at the top of the page and provide great results.

TehMonkay

iTrader: (-1)

passenger side strut tower, next to the variable resistor, yellow connector, jump the wires.

magus2222

iTrader: (22)

The engine revving to 3000 for quick sec or 2 is natural. it is the cold start assist that mazda put in.
FOR THE NEWBS, cold start is NOT a vacuum leak, a vacuum leak would lead to bad and low idle rpm, not visaversa, if so, please explain how, i would like to here this..................
COLD START
/thread

walken

iTrader: (6)

check the hoses that plug into the back of the main air intake tube.

turboIIrotary

iTrader: (9)

mine did this and it was the timing check your CAS

rx7-kid

iTrader: (1)

i got exactly the same problem. I know that the 3k is normal. but its not normal when it went up to 3k and shuts off, and also stepping on the gas wont help either it will stilll shuts off; i check my timming and adjust it alot but if the timming is off then the car wont start,

fergusonchris

mine will start and revv fine, but wants it hits 3500 4000 it boggs and trys dying

Brett(87 FC GX)

aghh none of this sounds right.
my airflow sensor is fine. its getting air.

i CAN keep it above 3000 by hitting the gas but if i let it go below 3000 it dies

iceblue

bad FPR

rx7-kid

iTrader: (1)

thinking about it top of my Stock fuel pressure regulator is lose and you can turn it. could that be the problem. but then i could smell gas on my spark plug

Brett(87 FC GX)

what the hell is an FPR:P

shpaintball

your problem is a loose injector....check the connectors ...and if not the maf....i had same issue about 2 months ago...