Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WJ > Tech Tips/DIY/How to

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #13  
Old 02-21-2013, 02:42 PM
Hacksaw's Avatar
Member
 
Join Date: Dec 2012
Posts: 674
Thanks: 0
Thanked 5 Times in 5 Posts
Rep Power: 1804
Hacksaw has a reputation beyond reputeHacksaw has a reputation beyond reputeHacksaw has a reputation beyond reputeHacksaw has a reputation beyond reputeHacksaw has a reputation beyond reputeHacksaw has a reputation beyond reputeHacksaw has a reputation beyond reputeHacksaw has a reputation beyond reputeHacksaw has a reputation beyond reputeHacksaw has a reputation beyond reputeHacksaw has a reputation beyond repute
Heat and time...the same things that stuck it there will unstick it...pbblaster everyday for a few days try again. If that doesn't work use a torch to heat up the nuts.

Think Outside !- No Box Required.
__________________

__________________
Reply With Quote
  #14  
Old 02-21-2013, 03:27 PM
Member
My Jeep: 2003 4.7L WJ
 
Join Date: Feb 2013
Location: Knoxville, TN
Posts: 47
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 481
mantonas is on a distinguished road
Re: Putting 4.7 V8 from 01 GC into 03 GC

I can't even get a socket on it. The nut is on top, and as far as I can tell, there's no way to access it. I don't know how I would even spray PB Blaster on it, let alone put a wrench on it.The donor car has 192,000 miles on it. Most likely it's got the original exhaust system in it. As much as I hate to spend the money, this might be the right time to replace the cats and the O2 sensors.

Also, I was just out there removing all the sensors, ignition coil wiring, etc. Then I looked over in the vicinity of the transmission control module, and there's a huge wire plug near it, and another electrical connection bolted onto the TCM. After I get the engine out, I bet I'm going to find out that I could have just disconnected the entire engine/transmission wiring harness right there instead of unplugging everything from the engine.

Also, I don't know how anybody can reach the rear spark plug on the passenger side without removing the engine. Also a good time to change those, and put in the absolute longest life plug available, whatever that might be.
__________________

__________________
Reply With Quote
  #15  
Old 02-21-2013, 08:46 PM
Frango100's Avatar
The BEAST from Brazil

My Jeep: 2004 4.7L WJ
 
Join Date: Dec 2009
Location: Brazil
Posts: 4,334
Thanks: 8
Thanked 32 Times in 31 Posts
Rep Power: 524731
Frango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond repute
Re: Putting 4.7 V8 from 01 GC into 03 GC

I did remove mine a few months back. Didnīt gave any problems to me, but 1 1/2 year ago they where removed as well during the first tranny rebuild and we donīt have cold winters with salt on the roads.
Did you put some PB blaster on them and gave it enough time to soak?
The nuts have a small plate to them, so they wonīt turn.
The plugs are not that bad to change. You need a ratched, plug socket, extensions and a flexible joint.
I did change the valve seals a year ago and man, i can tell you that thats real fun, especially cylinder 7 and 8. I made the valve spring compressor myself after i couldnīt get something suitable. The worst thing was to get the valve locks back in place with one hand, while compressing the spring with the other, half laying in the engine bay. I have no idea how many liters of sweat i had lost and how many bad words iīve said ( or at least thought about some), but i finally succeeded.
Perseverance is the word
__________________
Frank

JEEP Grand Cherokee 4.7 Lmtd 2004
HID 8000K in low and fog / Quad Squad member
Monroe Reflex shocks / Pirelli Scorpion ATR 245/65/17 - Transgo reprogramming shiftkit.

VW Beetle 2.0 TSI 2013
My new toy
Reply With Quote
  #16  
Old 02-23-2013, 03:17 PM
Member
My Jeep: 2003 4.7L WJ
 
Join Date: Feb 2013
Location: Knoxville, TN
Posts: 47
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 481
mantonas is on a distinguished road
Wiring harness is removable!

So I was in the junk yard yesterday and there was a 99 WJ with the engine removed and a lot of other stuff under the hood ripped out. The wiring harness had been cut at a lot of points from the engine, presumably to help the engine come out, but it had also been unplugged from the vehicle wiring at a few points. It looked like there were about 5 main plugs that would need to be disconnected and the wiring harness could come out with the engine/transmission assembly. I may try this when I remove the bad engine from the 03. It was hard to get some of the connectors on the 01 engine off without breaking them, especially at the fuel injectors. It might be nicer to transfer the harness from one engine to the other when they're both sitting on the floor of the garage.
__________________
Reply With Quote
  #17  
Old 02-23-2013, 03:37 PM
Frango100's Avatar
The BEAST from Brazil

My Jeep: 2004 4.7L WJ
 
Join Date: Dec 2009
Location: Brazil
Posts: 4,334
Thanks: 8
Thanked 32 Times in 31 Posts
Rep Power: 524731
Frango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond repute
Re: Putting 4.7 V8 from 01 GC into 03 GC

The small red locking tabs from the fuel injector connectors are well known to break, they get brittle due to the high temperature environment. But they are a second lock, so it doesnīt matter that much if they break. Probably the same for other connectors in that same area.
__________________
Frank

JEEP Grand Cherokee 4.7 Lmtd 2004
HID 8000K in low and fog / Quad Squad member
Monroe Reflex shocks / Pirelli Scorpion ATR 245/65/17 - Transgo reprogramming shiftkit.

VW Beetle 2.0 TSI 2013
My new toy
Reply With Quote
  #18  
Old 02-23-2013, 11:01 PM
Member
My Jeep: 2003 4.7L WJ
 
Join Date: Feb 2013
Location: Knoxville, TN
Posts: 47
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 481
mantonas is on a distinguished road
Re: Putting 4.7 V8 from 01 GC into 03 GC

Yes! I broke at least two of those red sliding locks when I was taking the connectors off the fuel injectors on my donor engine because they were so brittle. As you say, they are a second lock so I wasn't going to be too upset if they broke off in the recipient vehicle.
__________________
Reply With Quote
  #19  
Old 02-24-2013, 09:36 AM
Frango100's Avatar
The BEAST from Brazil

My Jeep: 2004 4.7L WJ
 
Join Date: Dec 2009
Location: Brazil
Posts: 4,334
Thanks: 8
Thanked 32 Times in 31 Posts
Rep Power: 524731
Frango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond repute
Re: Putting 4.7 V8 from 01 GC into 03 GC

I think on my jeep most of them broke when i wanted to unlock them. I even searched for new locking tabs, but couldnīt find them and left it as is.
__________________
Frank

JEEP Grand Cherokee 4.7 Lmtd 2004
HID 8000K in low and fog / Quad Squad member
Monroe Reflex shocks / Pirelli Scorpion ATR 245/65/17 - Transgo reprogramming shiftkit.

VW Beetle 2.0 TSI 2013
My new toy
Reply With Quote
  #20  
Old 02-24-2013, 02:16 PM
Member
My Jeep: 2003 4.7L WJ
 
Join Date: Feb 2013
Location: Knoxville, TN
Posts: 47
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 481
mantonas is on a distinguished road
Re: Putting 4.7 V8 from 01 GC into 03 GC

Rockauto.com sells replacement connectors for about $17 a piece, which is pretty pricey. From the picture of the item, I can't even tell if it has the red sliding locks or not, but the red sliders appear to be "belt and suspenders" and are not entirely necessary anyway. However, the part is apparently applicable to the following vehicles, so I guess you could find as many of these as you want at the local junkyard.

BUICK (2005 - 2007)
CADILLAC (2000 - 2007)
CHEVROLET (2002 - 2009)
CHRYSLER (1998 - 2008)
DODGE (1998 - 2006)
FORD (2000 - 2007)
GMC (2004 - 2009)
HYUNDAI (2006 - 2007)
ISUZU (2005 - 2006)
JAGUAR (1999 - 2007)
JEEP (1999 - 2005)
KIA 2006
LINCOLN (1999 - 2007)
MAZDA (2000 - 2007)
MERCURY (1999 - 2007)
OLDSMOBILE1990 - 2003)
PLYMOUTH (1998 - 2001)
PONTIAC (2004 - 2006)
PORSCHE 2005
SAAB 2007
__________________
Reply With Quote
  #21  
Old 02-24-2013, 02:27 PM
Member
My Jeep: 2003 4.7L WJ
 
Join Date: Feb 2013
Location: Knoxville, TN
Posts: 47
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 481
mantonas is on a distinguished road
Success!!

So it turns out that the exhaust pipe bolts were not as hard to remove as I feared. I went out and bought a 1/2" drive 6 point 15 mm socket, so I could apply more torque, and a little U-joint swivel extension, and used my breaker bar and various extensions to reach the bolts, and they came right out. The biggest problem I had was that, after removing the first bolt of the pair on either side, the donut was too loose to keep the self-retaining nut on the top of the connection from turning, so I had to pull the donut down while I turned the bolt. Frustrating but not horrible.

I did spray PB Blaster on it, but I fully expected to snap those bolts, I didn't have any hope that they would actually unscrew, so I didn't give it too much time to work. I literally sprayed it on right before I started loosening the bolts, kind of cursorily. Maybe it helped, maybe it didn't. Right after I finished taking the bolts out on the donor vehicle, I tried to spray a bunch on the recipient vehicle. It will be a few weeks before I get that engine out, so it should have plenty of time to work.
__________________
Reply With Quote
  #22  
Old 02-24-2013, 02:40 PM
Member
My Jeep: 2003 4.7L WJ
 
Join Date: Feb 2013
Location: Knoxville, TN
Posts: 47
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 481
mantonas is on a distinguished road
Disconnecting transmission and transfer case

So there are a bunch of annoyingly inaccessible electrical plugs on the transmission, three on the driver's side and three on the passenger side. One on the passenger side is almost impossible to reach, and it appears to be connected to an O2 sensor.

On the driver's side are three hard-to-detach connectors, including the mother of all connectors, apparently the main connection to the Transmission Control Module (TCM). Just like the red sliders on the fuel injection connectors, there always seems to be some initial unlocking of every connector that needs to happen before you can get it off, and getting it off involves squeezing the outside of the connector, either near the plug or away from it, depending on whether the tab from the connector is hooking onto the plug from the inside or the outside. You usually don't know what you should do until it's off and you can look at it and say, oh, that's how it was supposed to come off, and hopefully by that time you haven't already broken it getting it off by sheer dumb luck. Any tips or "war stories" on getting these connectors off?

Also, I have no clue how to take the shifter off of the transfer case. On the transmission, the shifter cable appears to snap onto a ball, so it can just be pried off. On the transfer case, there is a much more serious looking clip with a hole in it that fits over a light-colored plastic pin, about 1/4" in diameter, that looks like it has a slight taper. Any tips on how to get this off?
__________________
Reply With Quote
  #23  
Old 02-24-2013, 08:23 PM
Hacksaw's Avatar
Member
 
Join Date: Dec 2012
Posts: 674
Thanks: 0
Thanked 5 Times in 5 Posts
Rep Power: 1804
Hacksaw has a reputation beyond reputeHacksaw has a reputation beyond reputeHacksaw has a reputation beyond reputeHacksaw has a reputation beyond reputeHacksaw has a reputation beyond reputeHacksaw has a reputation beyond reputeHacksaw has a reputation beyond reputeHacksaw has a reputation beyond reputeHacksaw has a reputation beyond reputeHacksaw has a reputation beyond reputeHacksaw has a reputation beyond repute
Do you have the factory service manual ?

Think Outside !- No Box Required.
__________________
Reply With Quote
  #24  
Old 02-25-2013, 07:40 AM
Member
My Jeep: 2003 4.7L WJ
 
Join Date: Feb 2013
Location: Knoxville, TN
Posts: 47
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 481
mantonas is on a distinguished road
Re: Putting 4.7 V8 from 01 GC into 03 GC

Unfortunately I do not. I should check on eBay for one. A part number book would also be nice, so if I break something I can check around for price and availability.

On a good note, I did figure out how to detach the main transmission connector plug and the input speed sensor plug on the transmission. I removed the bracket that held the shifter linkage cable. It was probably going to have to be removed anyway because obviously the shifter is going to stay in the car when I pull the engine/transmission/transfer case assembly. With the bracket out of the way, the input speed sensor came right off. As I noted in an earlier post, I just had to take a guess as to what was involved in removing the main transmission connector. There was kind of a handle that you have to swing away from the connector and down, with it making horrible cracking and breaking noises the whole time, and then the plug slid right off. Despite the sounds, nothing looked broken, so I guess that was the right way to remove it.

Next thing is to remove a similar bracket at the rear of the transmission that holds the transfer case linkage and is blocking the removal of the output speed sensor, and hopefully the transfer case linkage will come off easily after that. Then, it's remove the driveshafts, unplug the fuel line from the fuel rail, disconnect the A/C system (I'm going to use the A/C compressor from the donor engine because the one on the recipient vehicle looks like it's leaking green goo, which I'm guessing is dye that is showing a leak, so I have to break open the A/C system), perhaps disconnect the starter (I'm not sure if I have to), then unbolt the engine and transmission mounts and take it out. I'm targeting this Saturday, March 2, to have it out.
__________________

__________________
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
putting luggage up on roof DocCat Grand Cherokee - WK2 - 2 07-31-2012 07:50 AM
Putting on the kn kit this weekend Jcronin Engine Performance/Intakes/Exhausts 8 04-17-2012 08:54 AM
putting in my old AVIC d3 and selling the REC conoqmuela Grand Cherokee - WK 2 03-15-2011 08:35 PM
Putting a feeler out.... saleen032 Grand Cherokee - WK 52 02-11-2010 05:39 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 03:59 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