318is no idle when WARM

[AmosCake]

If I try to restart it when it’s warm, it stalls out. Giving it gas solves the problem.Already checked that single connector under the cover and it is unplugged. Unplugging the vacuum to the FPR does nothing. As in, when the car is on and I pull the vacuum, the car does not react. Could it be a bad FPR? No smell of fuel in the engine bay however, exhaust does smell after initial start. My fuel economy is around 19. Any help is appreciated. Car starts up cold every time.

[onesecond]

Have you check the Idle Control Valve to see if it is stuck close?

[AmosCake]

Have you check the Idle Control Valve to see if it is stuck close?

Yeah I checked it and it flaps normally as in it springs back. I also cleaned it as it was out but still the same issue.

[jrobie79]

check the resistance on the pins for the ICV. Also I vaguely remember reading that the camshaft position sensor going out can cause idle issues, but I can't remember where I saw it. A bad crankshaft sensor and you won't even be able to start the car, but if the cam sensor shits the bed, it just won't run well.

[AmosCake]

check the resistance on the pins for the ICV. Also I vaguely remember reading that the camshaft position sensor going out can cause idle issues, but I can't remember where I saw it. A bad crankshaft sensor and you won't even be able to start the car, but if the cam sensor shits the bed, it just won't run well.

my idle is fine during cold start though wouldn’t these problem cause both cold and hot issues?

[AmosCake]

Aight did the blue sensor test and everything checked out

[monty23psk]

1. Do the stomp test or scan it with PC just to make sure there is not code on the ECU.
2. Unplug battery for at least 1 hour to reset the ECU.

before you start chasing things, which seems to be sensor/electrical, lets make sure nothing is there

[AmosCake]

1. Do the stomp test or scan it with PC just to make sure there is not code on the ECU.
2. Unplug battery for at least 1 hour to reset the ECU.

before you start chasing things, which seems to be sensor/electrical, lets make sure nothing is there

Okay did the stomp test and I got 1215 so something with the AFM? Not sure what though since the car runs and drives perfect. Its just the warm start issues

[monty23psk]

Okay did the stomp test and I got 1215 so something with the AFM? Not sure what though since the car runs and drives perfect. Its just the warm start issues

ok, then something needs to be looked at but before you start, I would do Forum or learn how to clear the codes as part of the stomp test. Then drive the car and see if the code comes back. This is issue is probably related but you dont want this to be an old code that was stored.

[AmosCake]

ok, then something needs to be looked at but before you start, I would do Forum or learn how to clear the codes as part of the stomp test. Then drive the car and see if the code comes back. This is issue is probably related but you dont want this to be an old code that was stored.

I did a quick visual check to see if there are any leaks and saw a pretty big crack/hole under the intake boot(L-shaped). Ordered a new one for 50 bucks. Could that be causing the code?

[monty23psk]

I did a quick visual check to see if there are any leaks and saw a pretty big crack/hole under the intake boot(L-shaped). Ordered a new one for 50 bucks. Could that be causing the code?

Yes. Engine is allowing unmetered air into engine and that will mess with idle and performance. All depends on how bad crack/hole.

[AmosCake]

Yes. Engine is allowing unmetered air into engine and that will mess with idle and performance. All depends on how bad crack/hole.

I guess thats why my mpg is so bad lol. Ill check back when i install the new boot and clear code. Thanks

[AmosCake]

Yes. Engine is allowing unmetered air into engine and that will mess with idle and performance. All depends on how bad crack/hole.

Sorry for the late update, been busy with school. The new boot fixed the problem. Cleared both 1215 and 1222 code and car starts right up after being warm for 20 min. Also realized the fuel pump had no filter sock so installed one. Thanks

[jsnppp]

Thanks for posting that it was fixed!

[monty23psk]

Sorry for the late update, been busy with school. The new boot fixed the problem. Cleared both 1215 and 1222 code and car starts right up after being warm for 20 min. Also realized the fuel pump had no filter sock so installed one. Thanks

great news!