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E36 M3 (1992-1999) {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999


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Old Mon, Apr-03-2017, 12:20:04 AM   #11
englishtom1596q
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Default Re: Help needed stalling issues and rough idle

Check the evap line the runs up under the intake tube into the sensor then into the manifold. If that came off from under the manifold that would explain the idle issue and the evap codes
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Old Mon, Apr-03-2017, 02:17:47 AM   #12
betrezra
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Default Re: Help needed stalling issues and rough idle

I would disconnect the mass air sensor connector, and the Throttle body Sensor, and check for moisture. Try some contact cleaner, then blow dry with a air compressor, or heat gun (gentle heat). You might have some moisture in those connectors.

And as noted by me and above all possible disconn hoses. A flash light and a search under the intake while running will reveal a vac leak. Watch the fan!!!

Also could have moisture in crank pos sensor or cam pos sensor. Check for loose or moisture. Although these generally just die and don't run bad... they just die all together.

Also.... did you spray water on the fuel injectors or fuel inj harness? Check the harness connections to the fuel ink.

I'm not a big fan of pressure washing a motor....... water can get in alot of places. I prefer some foamy engine cleaner spray... avoid connectors and sensative areas.... let soak, then light spray with garden hose..... then some elbow grease with a sponge and degreaser.
GL.
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Old Mon, Apr-03-2017, 02:24:44 PM   #13
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Default Re: Help needed stalling issues and rough idle

Quote:
Originally Posted by betrezra View Post
I would disconnect the mass air sensor connector, and the Throttle body Sensor, and check for moisture. Try some contact cleaner, then blow dry with a air compressor, or heat gun (gentle heat). You might have some moisture in those connectors.

And as noted by me and above all possible disconn hoses. A flash light and a search under the intake while running will reveal a vac leak. Watch the fan!!!

Also could have moisture in crank pos sensor or cam pos sensor. Check for loose or moisture. Although these generally just die and don't run bad... they just die all together.

Also.... did you spray water on the fuel injectors or fuel inj harness? Check the harness connections to the fuel ink.

I'm not a big fan of pressure washing a motor....... water can get in alot of places. I prefer some foamy engine cleaner spray... avoid connectors and sensative areas.... let soak, then light spray with garden hose..... then some elbow grease with a sponge and degreaser.
GL.
So new development the idling problem has resolved itself which makes me think it was a moisture issue and now has finally dried up. Now the only problem is a loss of acceleration power could this point to the throttle sensor? Should I clear the fault codes out and see which new ones pop up? Not sure if it works that way. I wanna say it's not a vaccum leak anymore because I don't hear the noise. I have checked the spark plugs no moisture there so I don't think it's that. Thanks for all the help so far. Lemme know what u think

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Old Mon, Apr-03-2017, 04:26:55 PM   #14
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Default Re: Help needed stalling issues and rough idle

Final update found the problem the throttle position sensor was ethier dirty or had moisture in it removed it and cleaned it. Put it back on and now she's back to running normal who would of thought it was something that small. Thanks for all the help

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Old Thu, Apr-06-2017, 03:59:30 PM   #15
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Default Re: Help needed stalling issues and rough idle

Sweet. Thanks for noting the resolution. Probably should be a maintenance item for all of us and a good place to check when that symptom occurs.
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Old Thu, Apr-06-2017, 05:17:56 PM   #16
betrezra
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Default Re: Help needed stalling issues and rough idle

Did you diag the TPS via OBDII... and look for voltage sweep of TPS...... or did you change parts until something worked? Or did this fault throw a code?

Just curious for my brain-tool-box
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Discussing Help needed stalling issues and rough idle in the E36 M3 (1992-1999) Forum - {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999 at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)