New member with Wagoneer 91 - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Full Size Jeep Forum > New member with Wagoneer 91

Savvy Billet LED Tail LightsLight up the holidays with LED lights from JeepHutIntroducing MONSTALINER™ UV Permanent DIY Roll On Bed Line

Reply
Unread 03-23-2013, 11:34 PM   #1
Gante
Registered User
 
Join Date: Mar 2013
Location: Whittier, CA
Posts: 177
New member with Wagoneer 91

Hi all,

I am new to this forum and a proud new owner of a 1991 Grand Wagoneer.
The truck runs good but needs some TLC that I will be fixing little by little.

The first in my list is fixing an issue with a hard knock as I shift the automatic transmission from Neutral to Reverse or Neutral to Drive. I am not sure if the engine mounts would be the only suspect at this point. I do plan to replace them just in case but wanted to get some advice from the experts on other things I should check for.

Thanks in advance.

Gante is offline   Reply With Quote Quick reply to this message
Unread 03-24-2013, 07:28 AM   #2
RockRollin
"Positive.....I think"
 
RockRollin's Avatar
1990 FSJ Wagoneer 
 
Join Date: Apr 2012
Location: Grand Haven Mi, USA
Posts: 1,108
Engine mounts, transmission mounts, more likely u-joints.
Welcome to the world of FSJ. The world of mechanical-emotional highs, and lows.
__________________
"I like fun" Edd
Clawed: 90GW, TFI, Streetfire, 3"lift all spring, 31"BFG ATs, working RKE, Edel2131, Holly 1850, mild cam,
05 Renegade OME 927, 947, top plate, JBA 4.5s
RockRollin is offline   Reply With Quote Quick reply to this message
Unread 03-24-2013, 08:53 AM   #3
timgr
Registered User
1975 CJ6 
 
Join Date: Dec 2012
Location: Medford, MA
Posts: 465
+1 u-joints. Check both front and rear drive shafts.
__________________
1) '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS, hubcaps. 2) '82 J20 360/T18/NP208/3.73, KOs, 7600 GVWR 3) '75 CJ-6, 304/T15, PS, BFG KM2s, soft top 4) '95 VW Golf Sport 2000cc 2D
timgr is offline   Reply With Quote Quick reply to this message
Unread 03-25-2013, 10:56 AM   #4
Gante
Registered User
 
Join Date: Mar 2013
Location: Whittier, CA
Posts: 177
U Joints it is. After doing a little more research and reading your comments I feel confident that the ujoints may be bad in my truck. Thanks!!
Gante is offline   Reply With Quote Quick reply to this message
Unread 03-26-2013, 10:33 PM   #5
Gante
Registered User
 
Join Date: Mar 2013
Location: Whittier, CA
Posts: 177
Ok, in my case it was not the ujoints. I ended up replacing them anyways since the shaft was out already but the knocking noise and jerking is still there. Another thing I did noticed today is a small grinding noise as I shift rapidly all the way from 2nd to Parking. I am suspecting the transmission but hopefully I am wrong. Is there something else I could check? What about the transfer case, would that have a clank noise under any conditions? Thanks.
Gante is offline   Reply With Quote Quick reply to this message
Unread 03-26-2013, 10:53 PM   #6
super98lsc
Web Wheeler
1999 WJ 
 
Join Date: May 2006
Location: Austin, TX
Posts: 1,414
Play in the differential will do this. Bands in trans out of adjustment. Low fluid level. Check motor mounts and the bolts holding them to the engine in my case I found them to be missing rofl. Also what speed is or idle set at? Connect a arch and make certain its not above 700 rpm.
__________________
www.mangierisrc.com
06-Corvette z51-6spd,b&b,K&N low miles.
77-Corvette Stingray 496 BBC/TH400 built 667hp+
===================================
00 WJ 4x4, 4.7 stroker, turbocharged,..lots more..
01 WJ 4x2 4.7v8 Limited (needs valve job)
90 Grand Wagoneer 401 Edelbrock Heads, Lunati .510/.527 FT Cam, Edelbrock RPM Air Gap, Holley HP 750, Thorley Headers, HEI, Electric Fan w Digital controller,4" lift 31x10.50 Goodyear Duratrac's on Pro-Comp Wheels,new interior, seats,seals,Alpine and JL full system, Remote HEI, Clifford 2 way with remote start,windows,tailgate.
96 Cherokee Country 4dr/2x2 White/Tan 3" Lift Sahara 18" Wheels 32.5"'s 99up head and intake- for sale soon!
super98lsc is offline   Reply With Quote Quick reply to this message
Unread 03-27-2013, 11:04 PM   #7
Gante
Registered User
 
Join Date: Mar 2013
Location: Whittier, CA
Posts: 177
Quote:
Originally Posted by super98lsc
Play in the differential will do this. Bands in trans out of adjustment. Low fluid level. Check motor mounts and the bolts holding them to the engine in my case I found them to be missing rofl. Also what speed is or idle set at? Connect a arch and make certain its not above 700 rpm.
I check the transmission oil, that was fine.
I will need to check the engine mounts.
Gante is offline   Reply With Quote Quick reply to this message
Unread 03-28-2013, 05:44 AM   #8
RockRollin
"Positive.....I think"
 
RockRollin's Avatar
1990 FSJ Wagoneer 
 
Join Date: Apr 2012
Location: Grand Haven Mi, USA
Posts: 1,108
May have to get a 2nd person to do the shifting so you can narrow it down to one end or the other. So many things to consider, could be as simple as exhaust tapping a shock or something.
With that said, could be t-case chain, but I would certainly try to rule other things out first. As Super said, if the idle is high, and or vacuum leak, it could give the d-t a hefty jolt when put in gear.
__________________
"I like fun" Edd
Clawed: 90GW, TFI, Streetfire, 3"lift all spring, 31"BFG ATs, working RKE, Edel2131, Holly 1850, mild cam,
05 Renegade OME 927, 947, top plate, JBA 4.5s
RockRollin is offline   Reply With Quote Quick reply to this message
Unread 03-29-2013, 05:00 PM   #9
Gante
Registered User
 
Join Date: Mar 2013
Location: Whittier, CA
Posts: 177
Today as I was changing the transmision fluid and filter, I discovered that the transmission was not bolted to the transmission mount bracket!! This may explain my problems with the clunking noise when shifting. I found two bolts just sitting on the bracket but not bolted to the transmission. I spend so much time trying to bolt them to the tranny until I realized the these dam bolts where not the proper size... These where too wide and would not go into the tranny threads.
Now I need to find these two bolts to get my truck back in the road! ;-(.

Does anyone have any spare ones or do you know the specs of these two bolts?

I assume my transmission is the original one but not sure.
Gante is offline   Reply With Quote Quick reply to this message
Unread 03-29-2013, 06:46 PM   #10
Saul32
Registered User
1988 FSJ Wagoneer 
 
Join Date: Jun 2012
Location: Chicago, IL
Posts: 606
Sorry to go off topic, but how many miles are on your truck? I was always told not to change transmission oil and filter on cars this old or you would damage the trans.
__________________
Nothing important...
Saul32 is offline   Reply With Quote Quick reply to this message
Unread 03-29-2013, 07:27 PM   #11
Gante
Registered User
 
Join Date: Mar 2013
Location: Whittier, CA
Posts: 177
Quote:
Originally Posted by Saul32
Sorry to go off topic, but how many miles are on your truck? I was always told not to change transmission oil and filter on cars this old or you would damage the trans.
Really? I have never heard that before.
Gante is offline   Reply With Quote Quick reply to this message
Unread 03-29-2013, 08:54 PM   #12
RockRollin
"Positive.....I think"
 
RockRollin's Avatar
1990 FSJ Wagoneer 
 
Join Date: Apr 2012
Location: Grand Haven Mi, USA
Posts: 1,108
I've heard that too Saul, but I never gave it much heed. Thats the first thing I do when I get a used vehicle, change all fluids and filters.
Gante. I'm not sure of the size bolt, but I'd bet you have found the problem. If the bolt you have is too big, take it with you to the Mc Parts store and go next size down in SAE
__________________
"I like fun" Edd
Clawed: 90GW, TFI, Streetfire, 3"lift all spring, 31"BFG ATs, working RKE, Edel2131, Holly 1850, mild cam,
05 Renegade OME 927, 947, top plate, JBA 4.5s
RockRollin is offline   Reply With Quote Quick reply to this message
Unread 03-29-2013, 09:58 PM   #13
Gante
Registered User
 
Join Date: Mar 2013
Location: Whittier, CA
Posts: 177
Quote:
Originally Posted by RockRollin
I've heard that too Saul, but I never gave it much heed. Thats the first thing I do when I get a used vehicle, change all fluids and filters.
Gante. I'm not sure of the size bolt, but I'd bet you have found the problem. If the bolt you have is too big, take it with you to the Mc Parts store and go next size down in SAE
I guess I will have to resort to that option of guesstimating the bolt size... Hopefully some can give me this info if they know it.
Gante is offline   Reply With Quote Quick reply to this message
Unread 03-29-2013, 10:09 PM   #14
pleontks
Registered User
1976 J-Series Truck 
 
Join Date: Apr 2010
Location: Whetstone, Az
Posts: 1,130
Quote:
Originally Posted by Saul32 View Post
Sorry to go off topic, but how many miles are on your truck? I was always told not to change transmission oil and filter on cars this old or you would damage the trans.
I've heard oil and filter is fine, but not to do the 'transmission flush' thing that the shop does.
__________________
Beauty is in the eye of the jeepowner.
pleontks is offline   Reply With Quote Quick reply to this message
Unread 04-02-2013, 07:46 PM   #15
Gante
Registered User
 
Join Date: Mar 2013
Location: Whittier, CA
Posts: 177
Ok, I have changed the transmission oil and transmission filter. I have replaced the u joints on both sides of the main shaft. I have secured the transmission to the transmission mount (it was loose)... And still have the problem with the "jumping" or jerking when I shift from neutral to drive or neutral to reverse. What am I missing here? Anything else to check for?
Gante is offline   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Thread Tools






Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.