Help!!!!!! Car Choking - Perth-WRX.com

kenneth2koh · #1 09-10-2007, 12:16 AM

need some help or advice... tonite when i started my engine after work... its chokes.. rpm goin up and down.... and sometimes it even come to almost a complete stall. when i went back up.... there is a couple of time i heard it pinging if i m not wrong.. cos i can hear loud tacking sound... and i quickly switch off the engine. then turn it on again.

hehehhee

i got pissed and i just floored the accelerator and let it choke its way up.... but surprisingly... when it hits 4000rpm...... it just shoot up....

dun think its that cold to cos a cold start problem..
these are my mod and model

my01 wrx
xforce turbo back, sti tmic, sti injectors, apexi power intake, vf 34...
stock ecu( verso)

was thinking its either the fuel pump or the maf sensor....

Elrico · #2 09-10-2007, 05:20 AM

MAF if the revs are fluxuating so badly. Good idea NOT to floor it as it could lean the engine out if its sending wrong signals to the ECU.

Fuel pump could also be a likley contender and would cause a pinging noise if its shat itself. Try cleaning the Mass Air Flow sensor with electrical cleaner and hope for the best, if its WORSE or a LITTLE better after you clean it chances are its the MAF. If nothing really happens id say pump.

B4GT · #3 09-10-2007, 05:21 AM

Hope you dont have a Turbosmart FPR sold by speedworks? If you do get rid of it ASAP

Elrico · #4 09-10-2007, 05:29 AM

He didnt list it, so id assume he doesnt :P

And is that a warning that more people should be adhearing to? (Not myself ofcorse

)

tuna · #5 09-10-2007, 06:32 AM

check for fuel blockages, ditch any aftermarket pressure regs and make sure you have decent spark at all 4 cylinders.

nauli · #6 09-10-2007, 06:37 AM

Mate, don't stuff around with it...if it has a Verso tune, take it back to ASG and get them to check it out...Amen.

Kato · #7 09-10-2007, 07:41 AM

Hmm...

Given the post is at 12.16am, I'm guessing the car ran fine before? If so go to or call ASG and tell them.

I doubt anyone can diagnose it over a forum.

Chrus · #8 09-10-2007, 07:49 AM

Idle/Air control valve?? Give that a clean with some carby cleaner - otherwise take back to workshop

kenneth2koh · #9 09-10-2007, 09:04 AM

i think its best just to call up ASG to check, as i have no aftermarket fuel rail or sparkplug... all standard.....

the only thing that worries me, if the car is running too lean....... as i have mention.... i heard a few pings....loud pings

DarkMoose · #10 09-10-2007, 12:04 PM

Get it towed then? 100 bucks on a Tow or 5k on a new engine, u decide what u can better afford.....