Stalling after fill up.

[z0]

Anyone having a stalling issue after filling up the gas tank?

After the fill up the car will run very high AFR's at idle. Around 10 to 9 causing it to stall unless I keep the throttle slightly depressed to add more air.

Several people are experiencing this as reported on the following thread at srtforums.com.

http://www.srtforums.com/forums/showthread.php?t=280526

[distinctdev]

Im having the same problem here 

[DodgeSRT4SGP]

This may sound crazy but I would sometimes put gas in my car while it was still running but as soon as I opened the gas cap it would sound like the fuel system/ charcoal canister de-pressurized. The car would then idle very rough and sometimes stall out on its own. What I did to fix it was run the vacuum line from the stock check valve to the nipple on my CAI. Then ran a line straight off my BOV to the nipple on the intake manifold. Car runs a whole lot better and even seems to be getting better gas mileage now.

[z0]

AEM any thoughts?

[distinctdev]

This may sound crazy but I would sometimes put gas in my car while it was still running but as soon as I opened the gas cap it would sound like the fuel system/ charcoal canister de-pressurized. The car would then idle very rough and sometimes stall out on its own. What I did to fix it was run the vacuum line from the stock check valve to the nipple on my CAI. Then ran a line straight off my BOV to the nipple on the intake manifold. Car runs a whole lot better and even seems to be getting better gas mileage now.

i think this is the solution, same thing i was told by ragetek. Ill have to try it out.

[TexSRT4]

i dont have a problem if i let turn the key on for a 5 count before firing the motor up. almost like the fuel system has to charge itself, presurise the line if you will. if i get in and fire it up right away, it lopes HARD, the cams help that out. but if i let the fuel pump run for a minute first, its fine

[distinctdev]

This may sound crazy but I would sometimes put gas in my car while it was still running but as soon as I opened the gas cap it would sound like the fuel system/ charcoal canister de-pressurized. The car would then idle very rough and sometimes stall out on its own. What I did to fix it was run the vacuum line from the stock check valve to the nipple on my CAI. Then ran a line straight off my BOV to the nipple on the intake manifold. Car runs a whole lot better and even seems to be getting better gas mileage now.

this fixed my problem, althought i didnt run it to the cai i just left the line open

[DodgeSRT4SGP]

This may sound crazy but I would sometimes put gas in my car while it was still running but as soon as I opened the gas cap it would sound like the fuel system/ charcoal canister de-pressurized. The car would then idle very rough and sometimes stall out on its own. What I did to fix it was run the vacuum line from the stock check valve to the nipple on my CAI. Then ran a line straight off my BOV to the nipple on the intake manifold. Car runs a whole lot better and even seems to be getting better gas mileage now.

this fixed my problem, althought i didnt run it to the cai i just left the line open

Awesome. Glad to hear . With that line venting to the atmosphere, do you smell any gas fumes in the engine bay now because of it?

[distinctdev]

This may sound crazy but I would sometimes put gas in my car while it was still running but as soon as I opened the gas cap it would sound like the fuel system/ charcoal canister de-pressurized. The car would then idle very rough and sometimes stall out on its own. What I did to fix it was run the vacuum line from the stock check valve to the nipple on my CAI. Then ran a line straight off my BOV to the nipple on the intake manifold. Car runs a whole lot better and even seems to be getting better gas mileage now.

this fixed my problem, althought i didnt run it to the cai i just left the line open

Awesome. Glad to hear . With that line venting to the atmosphere, do you smell any gas fumes in the engine bay now because of it?

i havent noticed, do you 

[z0]

i dont have a problem if i let turn the key on for a 5 count before firing the motor up. almost like the fuel system has to charge itself, presurise the line if you will. if i get in and fire it up right away, it lopes HARD, the cams help that out. but if i let the fuel pump run for a minute first, its fine

Tried adding a 5 sec fuel pump prime, but it didn't change anything.

[DodgeSRT4SGP]

This may sound crazy but I would sometimes put gas in my car while it was still running but as soon as I opened the gas cap it would sound like the fuel system/ charcoal canister de-pressurized. The car would then idle very rough and sometimes stall out on its own. What I did to fix it was run the vacuum line from the stock check valve to the nipple on my CAI. Then ran a line straight off my BOV to the nipple on the intake manifold. Car runs a whole lot better and even seems to be getting better gas mileage now.

this fixed my problem, althought i didnt run it to the cai i just left the line open

Awesome. Glad to hear . With that line venting to the atmosphere, do you smell any gas fumes in the engine bay now because of it?

i havent noticed, do you 

I dont smell anything but I think that is because I have that line routed into my intake.  It may not make a difference. 

[roostboost]

This may sound crazy but I would sometimes put gas in my car while it was still running but as soon as I opened the gas cap it would sound like the fuel system/ charcoal canister de-pressurized. The car would then idle very rough and sometimes stall out on its own. What I did to fix it was run the vacuum line from the stock check valve to the nipple on my CAI. Then ran a line straight off my BOV to the nipple on the intake manifold. Car runs a whole lot better and even seems to be getting better gas mileage now.

what stock check valve are you referring to?  I already have my bov T'd into the TB/intake manifold nipple....If I leave the car running while opening up the gas cap, I hear it de-pressurize and the car stalls. It then takes awhile for it to crank over....thanks for the help!

[distinctdev]

This may sound crazy but I would sometimes put gas in my car while it was still running but as soon as I opened the gas cap it would sound like the fuel system/ charcoal canister de-pressurized. The car would then idle very rough and sometimes stall out on its own. What I did to fix it was run the vacuum line from the stock check valve to the nipple on my CAI. Then ran a line straight off my BOV to the nipple on the intake manifold. Car runs a whole lot better and even seems to be getting better gas mileage now.

what stock check valve are you referring to?  I already have my bov T'd into the TB/intake manifold nipple....If I leave the car running while opening up the gas cap, I hear it de-pressurize and the car stalls. It then takes awhile for it to crank over....thanks for the help!

its a green and black 3-way plasic valve, vent the line coming from the firewall area to atmosphere.

[roostboost]

can you be a little more specific as to where it is?  Is it by the brake booster on the driver's side by the firewall?  I see a few green and black valve's/"T"s by the firewall.....thanks!!

[DodgeSRT4SGP]

can you be a little more specific as to where it is?  Is it by the brake booster on the driver's side by the firewall?  I see a few green and black valve's/"T"s by the firewall.....thanks!!

It is directly under your intake between the head and battery. It is normally connected with all the other factory solenoids and vacuum lines. You will see the two green ports. One pointing towards the front of the car and the other pointing up towards the hood. It has nothing to do with the brake booster. I believe it is an emissions related thing that runs all the way back to the charcoal canister. Simple remove the check valve and run 12"-18" of 3/8 vacuum line from the nipple on your intake to where the check valve port was. It sounds confusing but takes 5 minutes if you know what your doing. Be sure to use zip ties always.