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I have a hemi jeer commander 06 5.7 L. I keep getting random…

Customer Question
I have a hemi...

I have a hemi jeer commander 06 5.7 L

Mechanic's Assistant: Are you fixing your Commander yourself? What have you tried so far?

I keep getting random misfire. I have had the brain changed, spark plugs coils a sensors, still getting random misfires. Now the jeep is literally stopping/dieing while driving

Mechanic's Assistant: How many miles are on the car? When did you last change the plugs?

I've had it to 4 mechanics. They can't figure it out

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

They did a fuel test and said it isn't the injectors or pump i also had new battery

Submitted: 8 months ago.Category: Dodge
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Answered in 3 minutes by:
11/17/2017
Dodge Mechanic: HDGENE, ASE Master Tech replied 8 months ago
HDGENE
HDGENE, ASE Master Tech
Category: Dodge
Satisfied Customers: 6,575
Experience: 28 years Auto experience, Ford, GM, Chrysler, Asian & European
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Hello, and thank you for using Just Answer! My name is***** me a few moments to review your question and Ill do my best to assist you.

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Dodge Mechanic: HDGENE, ASE Master Tech replied 8 months ago

Hello, you said random misfires and now it stalls. Does it start back up and idle after it stalls? What diagnostic trouble codes ares stored and how many miles are on the vehicle?

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Customer reply replied 8 months ago
I put it in park. Restart and it goes. It also hesitates to go. Multiple random misfires. 139k
Dodge Mechanic: HDGENE, ASE Master Tech replied 8 months ago

Ok does the engine pass a compression test, You said the fuel system is good. The spark plugs and coils are new so it leaks only a couple of possibilities. One, a wiring problem between the coils and the pcm. Two a weak valve spring. The Hemi engines had issues with the valve springs causing random misfires. The compression test will show if there is a base engine issue along with checking engine vacuum at an idle with a vacuum gauge. If there is a valve train issue the vacuum needle will flutter erratically. Last possible issue would be a problem with the rpm signal from the crank sensor or its trigger wheel causing it to random misfire. It will be a process of elimination to isolate the misfire cause.

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Customer reply replied 8 months ago
Any answers
Dodge Mechanic: HDGENE, ASE Master Tech replied 8 months ago

Yes, see above, I was typing it out.

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Customer reply replied 8 months ago
The crank sensor was changed
Customer reply replied 8 months ago
Is this expensive to fix - value springs
Dodge Mechanic: HDGENE, ASE Master Tech replied 8 months ago

It can be done in the vehicle without a major tear down. But it will still be somewhat costly. ABout 8 hours labor plus parts, springs gaskets. etc.

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Dodge Mechanic: HDGENE, ASE Master Tech replied 8 months ago

If you need more help please let me know. If I answered your questions please use the 5 stars above to leave a positive rating.

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Dodge Mechanic: HDGENE, ASE Master Tech replied 8 months ago

Do you need more help with this concern?

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