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High Idle Speed issue (Pacifica 2005 3.5L)

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Old 01-22-2019, 12:00 AM
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Unhappy High Idle Speed issue (Pacifica 2005 3.5L)
Hi to all! I urgently need your help. I replaced the spark plugs on my Chrysler Pacifica 2005 3.5 L. After that, I tried to start the car. It started up but with very high idle speed. After a couple of seconds, the car turned itself off. Every time I start the car, this problem repeats. All hoses checked and bolts spun. Any idea? Maybe I damaged the sensors?

Thanks a lot in advance

Alex
 
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Old 01-22-2019, 11:13 AM
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There is a Mass Airflow Sensor mounted on the black rubber air intake tube. It can be easily damaged (or left out) when doing the plugs on a 3.5. Can you verify MAF sensor is in place and functional?
 
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Old 01-22-2019, 11:28 AM
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Originally Posted by djetelina
There is a Mass Airflow Sensor mounted on the black rubber air intake tube. It can be easily damaged (or left out) when doing the plugs on a 3.5. Can you verify MAF sensor is in place and functional?
I am not sure..
but I figured out that U have a bad vacuum leak where egr tube goes into upper intake... missing gasket.

 
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Old 01-22-2019, 11:28 AM
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Originally Posted by amivo

I am not sure..
but I figured out that U have a bad vacuum leak where egr tube goes into upper intake... missing gasket.

Sorry. I have
 
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Old 01-22-2019, 07:33 PM
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Originally Posted by amivo

Sorry. I have
Yes, the missing EGR gasket could do it. Either that or the MAF sensor leaking vacuum, causing the engine to rev up...
 
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Old 01-22-2019, 07:47 PM
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Originally Posted by djetelina
Yes, the missing EGR gasket could do it. Either that or the MAF sensor leaking vacuum, causing the engine to rev up...
thank you. I will try to fix it with the gasket first. Did you mean MAP sensor?
 
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Old 01-22-2019, 08:28 PM
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Originally Posted by djetelina
Yes, the missing EGR gasket could do it. Either that or the MAF sensor leaking vacuum, causing the engine to rev up...
f... ! Gasket doesn’t help... I will buy the MAP SENSOR
 
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Old 01-22-2019, 10:26 PM
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Originally Posted by djetelina
Yes, the missing EGR gasket could do it. Either that or the MAF sensor leaking vacuum, causing the engine to rev up...
new gasket, new MAP sensor... but the same problem
 
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Old 01-23-2019, 06:34 PM
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Not sure at this point. May try a good scan tool to see it it is throwing any codes...
 
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Old 01-23-2019, 09:03 PM
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OEM plugs or an alternative?
 
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