New Girl!
Super Moderator
Joined: Sep 2002
Posts: 2,763
From: Savannah, Ga
It doesnt really feel like surging...the only thing that I am feeling when I drove the car was that everytime I came to a stop it would stall (it is an automatic) if my foot wasn't on the pedal giving it gas and revving it, and it didnt seem to want to shift...I don't know how to really explain it. When I had half the header done (it was clamped to the cat and the O2 sensor was just placed on the bung) I pulled it out of the garaged and just slammed the gas, it drove fine then, had a lot of power and such...maybe that blew the line off...but I dont see what would cause all the driving and stalling problems.
A vacuum leak will certainly cause that on FC's. The MAF meters the air coming into the engine, and the computer determines how much fuel is needed based on the airflow. A vacuum leak is basically unmetered air getting into the engine, so the ecu isnt adding enough fuel. Lean mixtures result in misfires, stumbling, and stalling at low rpm. And yes, one vacuum line is enough to make the car stall when you let off the gas and let the engine fall to idle.
Thread Starter
Junior Member
Joined: Apr 2010
Posts: 18
From: Staunton
A vacuum leak will certainly cause that on FC's. The MAF meters the air coming into the engine, and the computer determines how much fuel is needed based on the airflow. A vacuum leak is basically unmetered air getting into the engine, so the ecu isnt adding enough fuel. Lean mixtures result in misfires, stumbling, and stalling at low rpm. And yes, one vacuum line is enough to make the car stall when you let off the gas and let the engine fall to idle.
Seems it was the vaccuum line, and the adjustment on the idle. He wants to work on it more tomorrow...but I haven't had a car in a month! Tinkering can wait! I wanna drive!
Senior Member
Joined: Dec 2008
Posts: 737
From: Folsom, CA
FYI the flooding procedure can very from person to person so ill throw what the guy who rebuilt my engine said and that is pull both EGI fuses (if its a s4 86-88) WOT (wide open throttle) for 10 seconds cranking 3 times plug fuses back in and crank with WOT till it starts its worked everytime and i have had to walk over to the guy working on my car (alignment or electrical) and teach him how to do it or do it myself and make him look stupid
Senior Member
Joined: Aug 2002
Posts: 4,848
From: Mike is a Liar!
...or you can just warm the car up to operating temperatures to avoid that from happening in the first place.. I used to **** my neighbors off when I would warm up my FC just to go park it outside early on sunday mornings.. I miss my vert..
By the way, welcome to nopistons.com.
By the way, welcome to nopistons.com.
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