hey guys, so i've searched for hours and found a bunch of issues and don't know which one to believe

so after replacing o rings in lower exh. manifold, put upperintakemanifald and others back together, checked vacuum linesx2...

my car starts, ignites, goes to 1k~1.5k, then dies(gassing the pedal has no effect) ! But then if starter fluid is sprayed into the car it stays and idles, but throttle still will not work also

what is going on? i smell fuel though so fuel pump should be working.

My car is an s4 88 10thae

 

AFM is most likely unplugged, or not plugged in all the way.

 

thanks for the help, but i made sure the AFM is connected and it is connected for sure
car still fires up then dies

 

given the heat and humidity in your area, 1.5k cold start screams vacuum leak, and if dies, its after the AFM so start there

also i hope u used gaskets when you rebuilt the to intake components

o and check the throttle cable, its a tiny metal wire, behind the master cylinder, if a stopper fell off, that would explain the foot on gas no go problem

 

If you're sure the AFM is not the issue, then you've got a vacuum leak...and a big one to boot. Most likely suspects are a vac hose that didn't get plugged up, a vac hose that's cracked or even broken, but my vote goes to a torn gasket at the throttle body or the intake manifold. Replace those puppies with brand new ones and it probably wouldn't hurt to spread a bit of RTV on them when you do.

 

+1 on the AFM not being connected properly. You might try pulling the engine codes if you can't figure it out after a while.

 

+2 for the AFM 99.9% check the plug

 

hmm okay i'll check the plugs, thanks guys

but if that fails i shall update and give you guys the heads up

 

Please report back. It makes the thread complete when you post the final resolution and solution to the problem. Helps others who will read this thread for similar problems.

 

so...the plug on the AFM is connected and i have no clue whatsoever what is going on
im waiting on a fuel pump to install into the car and see how that goes then i will give the heads up

 

if it is starting with its on fuel and fuel pressure the problem probably isn't the fuel pump. Everyone is saying the afm because then engine will start and run for a little while on the start map before it starts relying on the input from the afm.

I would suggest turning your ignition switch to the on position, and pushing on the flapper in the afm, you should hear the fuel pump run and this should also give you an idea if your afm is working at all.

 

well fuel pump isnt the problem for sure..installed a higher flowing pump. checking vacuum lines still looks good, i have no clue what's going on anymore, this is getting really frustrating

 

This may or may not help. If your car still has the emissions check the O2 sensor. On my old car (not a 7 sadly) one of the O2 sensors went out. The car would run for a bit then die randomly.

 

the o2 sensor is still good on the car

 

Time to pull codes,

http://www.teamfc3s.org/info/article...odes/main.html

http://www.geocities.com/huguesdc1/faqdiagnosing.html


It's not as hard as is looks, just follow the directions and let us know what the results are.

Good luck

 

Will the car run if you hold the gas down? If it will, it is definately a vacuuum leak.

 

the rpms stay the same even if i gas it

 

turns out the maf tube was cracked and the afm/maf door was jammed
fixed, car runs but now i get WORSE gas mileage and black smoke coming out from exhaust running rich? anyone want to help?

 

SAFC II dose

 

So the winners are everyone that posted check your AFM post #2,3,4....