Stalls at idle. Gas pedal keeps the engine running

[Aanic]

You didn't tell us if you found anything in the parts you cleaned. My 2.5 had the same issue. Once I cleaned the idle control valve it ran fine. Then it started having the issue again and when I opened it that time the inside of the valve, throttle body and intake has chocolate milkshake in it. Just previously I had a coolant low without a leak.

Just got my replacement engine yesterday as the intermix was so bad I'd lose 2 gallons of coolant into the sump in a 5 minute drive.

[Rapido]

Originally Posted by Xpit77

Check and clean MAF.

Originally Posted by Stl-986

you should check & fix this before you do anything else

Originally Posted by ike84

I agree with both of the above, especially the coolant leak.

Before you changed the oil, the car ran without issue? Like no issues whatsoever? And then as soon as you changed the oil you started having issues? If that's the case then I would worry something got buggered up here. What type of oil did you use? What type of filter? Is this the first time you've changed oil on this car? If so, what exactly did you do?

I had an old boss who always said "wherever there is an issue, look to where the hands of man have been". Very poetic way of saying that if you've got a problem after doing something, it's most likely you've got a complication from the procedure.


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Originally Posted by Aanic

You didn't tell us if you found anything in the parts you cleaned. My 2.5 had the same issue. Once I cleaned the idle control valve it ran fine. Then it started having the issue again and when I opened it that time the inside of the valve, throttle body and intake has chocolate milkshake in it. Just previously I had a coolant low without a leak.

Just got my replacement engine yesterday as the intermix was so bad I'd lose 2 gallons of coolant into the sump in a 5 minute drive.

Coolant leak fixed. It was a hole on a pipe.

Disconnecting MAF the car works so much better (starts with no problem and 800rpm idle but still fluctuates a bit). So, I plugged another MAF (from junkyard) but it gives me the same as before.

Reading codes (with the second MAF):

P0130 oxygen sensor ahead of catalytic converter (cylinders 1-3)
P0150 oxygen sensor ahead of catalytic converter (cylinders 4-6)
P1117 oxygen sensor heating 1 ahead of catalytic converter
P1121 oxygen sensor heating 2 ahead of catalytic converter
P1318 misfire, cylinder 6, emission related
P1316 misfire, cylinder 4, emission related
P1317 misfire, cylinder 5, emission related
P1313 misfire, cylinder 1, emission related
P0306 misfire, cylinder 6, damaging to catalytic converter
P0304 misfire, cylinder 4, damaging to catalytic converter
P0305 misfire, cylinder 5, damaging to catalytic converter

note: european car so it doesnt have the other o2 sensors (behind)

Maybe I was unlucky buying the MAF from junkyard?

The misfires are concentrated in bank 2. Could it be an o2 sensor?

[blue62]

Originally Posted by Rapido

Coolant leak fixed. It was a hole on a pipe.

Disconnecting MAF the car works so much better (starts with no problem and 800rpm idle but still fluctuates a bit). So, I plugged another MAF (from junkyard) but it gives me the same as before.

Reading codes (with the second MAF):

P0130 oxygen sensor ahead of catalytic converter (cylinders 1-3)
P0150 oxygen sensor ahead of catalytic converter (cylinders 4-6)
P1117 oxygen sensor heating 1 ahead of catalytic converter
P1121 oxygen sensor heating 2 ahead of catalytic converter
P1318 misfire, cylinder 6, emission related
P1316 misfire, cylinder 4, emission related
P1317 misfire, cylinder 5, emission related
P1313 misfire, cylinder 1, emission related
P0306 misfire, cylinder 6, damaging to catalytic converter
P0304 misfire, cylinder 4, damaging to catalytic converter
P0305 misfire, cylinder 5, damaging to catalytic converter

note: european car so it doesnt have the other o2 sensors (behind)

Maybe I was unlucky buying the MAF from junkyard?

The misfires are concentrated in bank 2. Could it be an o2 sensor?

The first thing you need to do is get a new MAF sensor.
I would only use a Bosch MAF sensor these cars don't do well with other brands.
Second: Your O2 sensors are not working. I see from the codes that both O2 sensors have the same issues. Could be a wiring issue. Could be that they are both shot.
Third: The misfires are not related to O2 sensors.
I would look at the coil packs on the plugs. Look for cracks or your sprark plug tubes could be leaking oil causing the plugs to short out.