Go Back   Jeep Garage - Jeep Forum > Jeep Technical Discussion > Troubleshooting/Problems Discussion

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #1  
Old 05-07-2012, 10:08 PM
Member
 
Join Date: May 2012
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 850
wkcherokee is on a distinguished road
2007 4.7 GC 4x2 Laredo has a cough

We just purchased this a week ago. Trying to diagnose the issue. I work at the dealership that we bought it from so work is being taken care of, but I want to know you guy's input. The check engine light is on.

Video of the exhaust. Ignore the little girl but the sound i keep hearing is right after it.

http://videobam.com/TPief

And video of the rpms when this sound happens.

http://videobam.com/LDiJw

What I am worried about is that it is an injector. The code is going to be read tomorrow so I will know more then.

Btw first post but certainly not my first time here! Keep doing what you're doing guys, Jeep brother for life!
__________________

__________________
Reply With Quote
  #2  
Old 05-07-2012, 10:15 PM
Member
 
Join Date: May 2012
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 850
wkcherokee is on a distinguished road
Also, it stutters slightly when cruising, no matter the speed.
__________________

__________________
Reply With Quote
  #3  
Old 05-07-2012, 10:51 PM
Member
 
Join Date: May 2012
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 850
wkcherokee is on a distinguished road
And yes i do realize its upside down. Recording, uploading, and sharing done on iPhone.
__________________
Reply With Quote
  #4  
Old 05-08-2012, 08:39 PM
Member
 
Join Date: May 2012
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 850
wkcherokee is on a distinguished road
Ok so cyl. 1 misfire. Blew out the plug and reset to see if it was just water causing it to short. Still feel and hear the stuttering. No light yet after 70 miles since disconnecting battery. I think i need new plugs or a new coil. Any thoughts?
__________________
Reply With Quote
  #5  
Old 05-09-2012, 01:03 AM
2005JGC's Avatar
Senior Member


My Jeep: 2005 4.7L WK
 
Join Date: Nov 2010
Location: Portland, OR
Posts: 2,751
Thanks: 51
Thanked 69 Times in 58 Posts
Rep Power: 1652949
2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute
Re: 2007 4.7 GC 4x2 Laredo has a cough

The last couple 4.7's I have had apart it was head gasket failure around the front cylinders.

Before you go replacing anything, swap the #1 coil for another cylinder, do the sparkplug too, but change that to a DIFFERENT cylinder so you will have your coil and your plug on different cylinders. From there drive it and see if the code that sets follows. It did look like your idle was fluctuating a little and the TPS is a very common problem on the 4.7l that will cause an idle fluctuation.
__________________
2005 Jeep Grand Cherokee - Gone but not forgotten!

Reply With Quote
  #6  
Old 05-11-2012, 06:47 PM
Member
 
Join Date: May 2012
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 850
wkcherokee is on a distinguished road
Figured out it was the spark plug. Fixed. Now just have to get the squeel from the back left brake fixed and get some mats and shes done!
__________________

__________________
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
2010 Laredo V6 4x2 MPG city millerkid095 Grand Cherokee - WK 12 08-09-2013 02:05 PM
Advice on ordering a base model Laredo E 4x2 onyx962 Grand Cherokee - WK2 - 7 08-03-2011 03:58 PM
heated mirrors on a 2007 laredo livestrong15 Grand Cherokee - WK 17 03-01-2011 01:03 AM
Finally Drove an '11 WK2 Laredo X 4x2 CalWK2 Grand Cherokee - WK2 - 5 09-04-2010 01:02 PM
Ryan's blackpepper that's always getting stuck in your throat and making your cough! blackpepper Members Rides 50 02-23-2010 10:49 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 03:21 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community