Help with my 1987 wrangler - JeepForum.com
Reply
 
LinkBack Thread Tools
post #1 of 54 Old 09-08-2013, 07:58 PM Thread Starter
Alphasolder
Registered User
1987 YJ Wrangler 
 
Join Date: Aug 2013
Location: Brighton
Posts: 37
Help with my 1987 wrangler

As some of you may remember I was here with emissions problem. still haven't passed emissions but the big issue now is it won't stay running and has trouble starting it is getting gas this problem is progressively worse I went and picked it up from mechanic shop and they have no idea what it could be. So here's what I've done
Spark plugs
Coil
New carb a carter
Starter solenoid
Fuel filter
Fuel pump
O2sensor
Cat
Cleaned engine out of carbon
Changed gears from 456 to 373
Added downdraft pulse air system to get a waiver
Changed oil
I looked at the ICm today cleaned it off put it back on
None of this has helped the stalling and the starting issue please help I'm out of money to take it to the shop

Alphasolder is offline  
Sponsored Links
Advertisement
 
post #2 of 54 Old 09-08-2013, 07:59 PM Thread Starter
Alphasolder
Registered User
1987 YJ Wrangler 
 
Join Date: Aug 2013
Location: Brighton
Posts: 37
So forgot to tell you I have the 4.2 motor
Alphasolder is offline  
post #3 of 54 Old 09-08-2013, 08:05 PM
Tom95YJ
[] Eye'd Jeep Connoisseur
 
Tom95YJ's Avatar
1999 XJ Cherokee 
 
Join Date: Sep 2004
Location: Salt Lake City
Posts: 9,396
Garage
When I bought my YJ it would not idle on its own and had issues running. I replaced my vacuum lines now it runs great. I wouldn't be surprised if that's your issue

'89 YJ The Smurf Build Thread
'99 XJ Black Betty Build Thread
Tom95YJ is offline  
post #4 of 54 Old 09-08-2013, 08:15 PM Thread Starter
Alphasolder
Registered User
1987 YJ Wrangler 
 
Join Date: Aug 2013
Location: Brighton
Posts: 37
Supposedly the mechanic checked that
Alphasolder is offline  
post #5 of 54 Old 09-08-2013, 08:21 PM
salsomano1a
Registered User
1991 YJ Wrangler 
 
Join Date: Apr 2011
Location: Orlando
Posts: 148
make sure you have a strong ground to the battery to the chasis of the jeep, believe or not that was my starting problem for months.
salsomano1a is offline  
post #6 of 54 Old 09-09-2013, 08:23 AM Thread Starter
Alphasolder
Registered User
1987 YJ Wrangler 
 
Join Date: Aug 2013
Location: Brighton
Posts: 37
Do you just add a wire and hook it to the jeep?
Alphasolder is offline  
post #7 of 54 Old 09-13-2013, 10:21 AM Thread Starter
Alphasolder
Registered User
1987 YJ Wrangler 
 
Join Date: Aug 2013
Location: Brighton
Posts: 37
87 wrangler 4.2 won't start.

Trying to go over the vacuum it isn't right I can't find one for the lines to the carb I know they are messed up
Alphasolder is offline  
post #8 of 54 Old 09-13-2013, 10:24 AM
jbolty
Moderator
 
jbolty's Avatar
1990 YJ Wrangler 
 
Join Date: Jun 2007
Location: San Diego
Posts: 17,839
Garage
everything you need regarding the 4.2 is here.

http://home.sprynet.com/~dale02/list.htm

.
"The right to be heard does not necessarily include the right to be taken seriously." —Hubert Humphrey
.
If you live within wheeling distance of San Diego county, click here
jbolty is offline  
post #9 of 54 Old 09-13-2013, 06:57 PM
salsomano1a
Registered User
1991 YJ Wrangler 
 
Join Date: Apr 2011
Location: Orlando
Posts: 148
no im talking about the normal ground that goes from the chasis to the battery.
salsomano1a is offline  
post #10 of 54 Old 09-14-2013, 11:49 PM Thread Starter
Alphasolder
Registered User
1987 YJ Wrangler 
 
Join Date: Aug 2013
Location: Brighton
Posts: 37
Thank you I used those diagrams worked well but my jeep won't start still
Alphasolder is offline  
post #11 of 54 Old 09-14-2013, 11:53 PM Thread Starter
Alphasolder
Registered User
1987 YJ Wrangler 
 
Join Date: Aug 2013
Location: Brighton
Posts: 37
Okay I will check I did just redo all the vacuum so all is fixed there but still won't run do I have a crankshaft position sensor on my jeep? I know the 4.0 have it but I looked today I see where it would hookup but I have no electric pigtail anywhere or anywhere to plug into for that matter
Alphasolder is offline  
post #12 of 54 Old 09-15-2013, 12:02 AM Thread Starter
Alphasolder
Registered User
1987 YJ Wrangler 
 
Join Date: Aug 2013
Location: Brighton
Posts: 37
Does all 1987 wranglers have a cps

I just got done doing all my vacuum lines. Still wont start which didn't surprise me to bad but it usually does so I checked into crankshaft position sensor and I don't have one on mine I see where it would hook up but there's no wiring harness for it and the absence of the sensor itself my motor is the 4.2 I know the 4.0 has one but does the carberatored engines have one? please help
Alphasolder is offline  
post #13 of 54 Old 09-15-2013, 12:19 AM
Tom95YJ
[] Eye'd Jeep Connoisseur
 
Tom95YJ's Avatar
1999 XJ Cherokee 
 
Join Date: Sep 2004
Location: Salt Lake City
Posts: 9,396
Garage
Quote:
Originally Posted by Alphasolder View Post
Okay I will check I did just redo all the vacuum so all is fixed there but still won't run do I have a crankshaft position sensor on my jeep? I know the 4.0 have it but I looked today I see where it would hookup but I have no electric pigtail anywhere or anywhere to plug into for that matter
The 4.0 was not offered in the wrangler in 1987, Also the 4.0 was never a Carbureted engine it has always has had fuel injection .
Your engine should be a 258 aka 4.2L

'89 YJ The Smurf Build Thread
'99 XJ Black Betty Build Thread
Tom95YJ is offline  
post #14 of 54 Old 09-15-2013, 12:34 AM
Tom95YJ
[] Eye'd Jeep Connoisseur
 
Tom95YJ's Avatar
1999 XJ Cherokee 
 
Join Date: Sep 2004
Location: Salt Lake City
Posts: 9,396
Garage
4.2 doesn't have a CPS. Your probably needing an ignition control module, Which is located on the driver side below the washer fluid reservoir

'89 YJ The Smurf Build Thread
'99 XJ Black Betty Build Thread
Tom95YJ is offline  
post #15 of 54 Old 09-15-2013, 07:40 AM
Old4X
Registered User
1990 CJ7 
 
Join Date: Nov 2008
Location: Ga
Posts: 5,145
For what you have already spent for no effect, you could have put an EPA approved fuel injection system on the engine.

There isn't a mechanic working today that was good with carburetors when they were still being sold on new cars. All you will find is fuel injection mechanics. If you spend the time and do the required studying, you can repair and maintain a carbed motor. But it is far easier today to just install fuel injection.

If I were still running a shop and you pulled your jeep in for repair to pass emissions, I would have to ask for $2500 cash up front with no guarantee, and all work on a time and material basis, in other words- 2500 in to see if you are serious, final price could end up far more. These are complicated setups, many parts are out of production, and most locals consider them antiques, not DD vehicles any more.

418 miles on 19 gallons of gas. Can't beat the BBD !
Old4X is offline  
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.



Email Address:
OR

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.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may 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 On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome