How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Jared D Your Own Question
Jared D
Jared D, ASE Certified Technician
Category: Chrysler
Satisfied Customers: 1693
Experience:  Shop Supervisor at County Fleet
62275574
Type Your Chrysler Question Here...
Jared D is online now
A new question is answered every 9 seconds

I have a Cylinder 4 misfire i have replace the Ignition coil

Customer Question

I have a Cylinder 4 misfire i have replace the Ignition coil and the spark plugs re adjusted the gap and still the misfire comes up any advice i have a chrysler pacifica 05 3.5 v6
JA: How many miles are on the car? Is it a steady misfire? Or random?
Customer: As far as i know its random theres no shaking to the vehicle, at all when there is its suttle, and its got 182k
JA: Are you fixing your Pacifica yourself? What have you tried so far?
Customer: I replaced the Ignition coil, spark plugs, checked the intake for leaks and still nothing
JA: Anything else you want the mechanic to know before I connect you?
Customer: Thats all
Submitted: 8 months ago.
Category: Chrysler
Expert:  Jared D replied 8 months ago.

This engine commonly has carbon buildup on the valves that will trigger occasional misfire codes. You could attempt an upper engine decarbonization procedure as the first step. With 182k I would imagine there is probably a good deal of carbon.

When you mention that you checked the intake for leaks, what did you do?

Expert:  Jared D replied 7 months ago.

Let me know if you still need help with this.

Please don't forget to rate.

Customer: replied 7 months ago.
I just sprayed the intake with brake lube and watched for rpm spikes
Expert:  Jared D replied 7 months ago.

That's the way to do it.

Have you attempted the decarbon yet? MOPAR makes an excellent upper engine cleaner that usually takes care of deposits in cases like this.

Customer: replied 7 months ago.
I havent attempt led to clean it theres now a small Evap leak, would i have to take apart all the Gaskets to clean it
Expert:  Jared D replied 7 months ago.

No, the cleaner is sprayed into the intake manifold through the throttle body. It's pretty easy to do. So the small eval leak, are you trying to track it down with a smoke tester or just looking at where to go from here?

Customer: replied 7 months ago.
Im tryna track down a mechanic with a smoker machine, or trying to buy the machine myself
Customer: replied 7 months ago.
Ill have to look into the spray
Customer: replied 7 months ago.
The mIsfire shaking has become more noticable tho and its random the engine light goes and comes randomly
Expert:  Jared D replied 7 months ago.

I can't find the MOPAR version online but here is the same thing but in the GM brand. This stuff works awesome:

https://www.amazon.com/Genuine-1052626-Engine-Injector-Cleaner/dp/B000QII698/ref=sr_1_9?ie=UTF8&qid=1475079980&sr=8-9&keywords=engine+deposit+cleaner

Customer: replied 7 months ago.
I was also gonna ask is there a way to program the Car to use another key when i only have one key that works
Expert:  Jared D replied 7 months ago.

Note: You must have two valid keys to add a new key to the system.

1. Insert the first valid key into the ignition switch. Turn the ignition switch to the
ON/RUN position for at least three seconds, but no longer than 15 seconds.
Then, Turn the ignition switch to the LOCK position and remove the first key.

2. Insert the second valid key into the ignition switch. Turn the ignition switch to
the ON/RUN position within 15 seconds. After 10 seconds, a chime will sound.
In addition, the Vehicle Security Light will begin to flash. Turn the ignition switch
to the LOCK position and remove the second key.

3. Insert the new key into the ignition switch. Turn the ignition switch to the
ON/RUN position.within 60 seconds. After 10 seconds, a single chime will
sound. In addition, the Vehicle Security Light will stop flashing. To indicate that
programming is complete, the Vehicle Security Light will turn on again for
seconds and then turn off.

The new key is now programmed. The Remote Keyless Entry transmitter will
also be programmed during this procedure.

Repeat this procedure to program up to eight keys.

Note: If you do not have 2 valid working keys you will have to call a
Locksmith to program or originate a key for you.

Customer: replied 7 months ago.
I only have on valid key though, i was asking if there was a way around it
Expert:  Jared D replied 7 months ago.

No, there is no way around it. The security is pretty darn good at keeping you from making new keys. Something I have seen people do is make a couple of plain metal keys with no transponder and then they cut the transponder off of the one good key and then secure it on the steering column as close to the sensor as possible. The computer picks up the signal from the transponder in the good key and the plain metal key is used to turn the ignition.

Expert:  Jared D replied 7 months ago.

Most automotive locksmiths will make and program new keys for a reasonable price.