coil pack problem
 

I went to the mechanic yesterday cause all my cv joints seem to be fine and my drive shaft had them balance my tires but am still having the shaking problem on my jeep when i go around 100km every so often , the garage told me to go to chrysler and get a dignostic check but they think it is my coil pack and that it should cost around 1000$ to replace seems like a lot for a coil pack and yes I do know it is only one coil pack for the hole engine just wanted to know if anyone else has replace the coil pack on their jeep and how much did it cost thanks alot Jon

Re: coil pack problem
 

www.rockauto.com $120.00US even with exchange, duty, and shipping it'll be a hell of a lot cheaper than what you were quoted. I thought the prices in McMurray were outrageous!

Re: coil pack problem
 

Is the shaking coming through the steering wheel or through the body?

Re: coil pack problem
 

no the shaking is coming through the tranny but seems more like the engine really and i did change the tranny mount

Re: coil pack problem
 

Did you check the condition of your motor mounts to?

Re: coil pack problem
 

yes they are all ok

Re: coil pack problem
 

Have you checked the condition of your spark plugs? If one is dead or close to dying then you'll get noticable vibration from the engine and may give the impression that one of the coil boots is lagging.
The jeep hasn't thrown any codes? Seems that if the PCM isn't getting enough spark to the cylinder it should be showing something including a cylinder misfire.
If it was the tranny, would expect a delay in response time, slower off the line kind of thing. Don't know if you have a manual or auto but if it's an auto does it perform the same way if you shut the OD off?

Re: coil pack problem
 

no i changed the spark plugs and no codes it is manuall and have not noticed any lack of performance but thanks for the help am bring it to chrysler tommor for a diagnostic test c from there what happens

Re: coil pack problem
 

Well if they say it's the coil pack at least you know you can get it cheaper than they want and it's only a 1/2 hour job to change out.

Re: coil pack problem
 

so it is the coil pack but the dealer charged me $160 to tell me that they told me they had to test drive it which I dont understand and then they back probed it to find that cylinder 5 is misfiring which I already new so they basically told me nothing and charged me 160$ for it but they said they are sure it is the coil pack thanks for the help am going to try to change it friday

Re: coil pack problem
 

found a coil pack for 250$ at a parts place in pincourt

Re: coil pack problem
 

They should not have to back probe anything. Any misfire information will show on their scan tool's datastream. Also a misfire that common and that often would trigger a code and probably start the check engine light flashing for a catalyst damaging misfire. I'd take a spray bottle and spray the coil pack and plug boots as best you can with water. See if it changes your idle quality or arcing is present.
good luck and let us know how it goes.

Re: coil pack problem
 

yeah I think they scamed me

Re: coil pack problem
 

so I changed the coil pack and stil have the same problem do not know what to do anymore any help would be great

Re: coil pack problem
 

First of all stop going to the Stealership, Go anywhere but crappy tire and the stealership. Find somebody with a code reader that knows how to use it or go and get one yourself. Check the internet, if its happened to you it probably has happened to other people as well.

Re: coil pack problem
 

no I have the scan tool and i checked it myself no codes anymore went to a garage and they seem to not know brought it to chrysler and they dont seem to know either have no clue what to do

Re: coil pack problem
 

I think instead of a code reader, you'll need a proper scan tool with running datastream and possibly a lab scope. The datastream only shows what the computer thinks it's seeing. The lab scope shows exactly what is happening in real time. As long as the PCM thinks everything is OK, it'll run poorly but never set a code.
Good luck and let us know how it goes.

Re: coil pack problem
 

okay I have no clue where I can get a lab scope and datastream as they cost so much to buy any clues a place that may have one??? thanks Jon

Re: coil pack problem
 

Any garage worth its weight in salt will have these. Diagnostics can be expensive as you know, so if you have a trade college nearby with an automotive program, call and see if they'd look at it. The advance level students are often needing project vehicles to practice diagnostic work and the instructors are usually incredibly knowledgable and right there to help. Probably a better and cheaper way to go than the stealership.
Good luck.

Re: coil pack problem
 

thanks for al the help it ended up eing a dirty fuel injector as i had recently added a monster exhaust ad was reving it for some friends and the gas that came out was dirty I went to gas station and super andproblem was gone thanks alot for all the help

Re: coil pack problem
 

Tells you something about the stealership and shops you went to, not so good after all.

Re: coil pack problem
 

sure looks that way but the first garage is my dad's good friend I guess he does not know all that much after all