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Amedee
Amedee, Dodge Technician
Category: Dodge
Satisfied Customers: 26076
Experience:  ASE certified tech advanced level specialist. Wisconsin certified emissions state inspector
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2005 Dodge Caravan, rough idle, occasionally stalls, smooths

Customer Question

2005 Dodge Caravan, rough idle, occasionally stalls, smooths out with when throttle opens.
Occasional cyl 4 misfire, cleaned TB, reaplced IAc and MAP, compression 150 accross al 4 cylinders
Submitted: 1 year ago.
Category: Dodge
Expert:  Amedee replied 1 year ago.

Hello and welcome! My name isCustomerand I can assist you with your question. Is the check engine light on? Are there any codes in the computer?

Customer: replied 1 year ago.
Intermittent light, cyl 4 misfire, comes and goes
Expert:  Amedee replied 1 year ago.

Ok, have you had a basic tune up done?

Customer: replied 1 year ago.
I also pulled 1 plug wire at a time and could not isolate the rough idle to any particular cylinder
Expert:  Amedee replied 1 year ago.

What is the engine vacuum at idle?

Customer: replied 1 year ago.
I will check it
Expert:  Amedee replied 1 year ago.

ok

Customer: replied 1 year ago.
15" HG,
Expert:  Amedee replied 1 year ago.

Ok, the engine vacuum is WAY TOO LOW. This is either caused by an air or a vacuum leak or incorrect valve timing. I would start by checking for vacuum leaks first and then check the timing belt marks as needed.

Expert:  Amedee replied 1 year ago.

In addition, the engine compression specs for this engine are 170 to 225 psi.

Customer: replied 1 year ago.
what is the proper value
Expert:  Amedee replied 1 year ago.

21 inches of vacuum at idle

Customer: replied 1 year ago.
I changed the head gasket, I will recheck the timing marks, I sprayed around the intake, and also plugged each vaccum line and got no response
Expert:  Amedee replied 1 year ago.

Ok, good! Then I would be checking the timing belt and marks next.

I am glad I can help!

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Expert:  Amedee replied 1 year ago.

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