Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.

90 Cherokee Wagoneer 4.0 slow to start (VIDEO)

Thread Tools
 
Search this Thread
 
Old 01-06-2015, 04:46 PM
  #1  
Newbie
Thread Starter
 
Rexx66's Avatar
 
Join Date: Jan 2015
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
Model: Cherokee
Default 90 Cherokee Wagoneer 4.0 slow to start (VIDEO)

Been replacing some stuff since I just picked it up a few days ago. Has a brand new Autocraft Gold battery, Bosch spark plugs, fixed a few loose/broken vac lines going to EGR solenoid, Cruise Control and HVAC.

Still slow to start... where should I begin? Assuming its fuel related, a friend said to check the fuel regulator and its not leaking, but may be bad on the inside? Its getting proper vac to it BTW.

Let me know what you think.

Old 01-06-2015, 06:22 PM
  #2  
CF Veteran
 
CCKen's Avatar
 
Join Date: Aug 2010
Location: Canton, MI
Posts: 8,357
Likes: 0
Received 82 Likes on 67 Posts
Year: 1999
Model: Cherokee
Engine: 4.0
Default

Fascinating.
Old 01-06-2015, 07:24 PM
  #3  
CF Veteran
 
djb383's Avatar
 
Join Date: Nov 2009
Location: The Republic of TEXAS
Posts: 8,172
Likes: 0
Received 14 Likes on 14 Posts
Year: 1998
Model: Cherokee
Engine: 4.0L HO
Default

Definitely extended crank time.......have u tried turning the key to "on" for say 5 seconds, then turn the key to "start"? Any difference?
Old 01-06-2015, 08:24 PM
  #4  
CF Veteran
 
Firestorm500's Avatar
 
Join Date: Apr 2009
Posts: 4,734
Likes: 0
Received 9 Likes on 9 Posts
Year: 2015, 2012
Model: Grand Cherokee (WK2)
Engine: 3.6L
Default

It's a RENIX. My '87 has always cranked longer than that. I don't think you have a problem.
Old 01-06-2015, 09:25 PM
  #5  
Junior Member
 
TheDude30425's Avatar
 
Join Date: Jun 2012
Location: Pittsburgh
Posts: 92
Likes: 0
Received 1 Like on 1 Post
Year: 1989
Model: Comanche
Engine: 4.0L
Default

That's not slow at all. The Renix computer system just takes a little longer to read the engines cranking and it making sure it's fast enough to start.
Old 01-06-2015, 09:26 PM
  #6  
Seasoned Member
 
firehawk618's Avatar
 
Join Date: Nov 2014
Location: Marysville, WA
Posts: 290
Likes: 0
Received 0 Likes on 0 Posts
Year: 1989
Model: Cherokee
Engine: 4.0
Default

That's about how my Renix starts also, minus the quick hiccup before it actually starts.
Old 01-06-2015, 09:38 PM
  #7  
CF Veteran
 
djb383's Avatar
 
Join Date: Nov 2009
Location: The Republic of TEXAS
Posts: 8,172
Likes: 0
Received 14 Likes on 14 Posts
Year: 1998
Model: Cherokee
Engine: 4.0L HO
Default

Ok, my bad, learn something new (about Renix) everyday. I'm used to bumpin' the starter and it's runnin' instantly......cold, hot, anywhere in between.
Old 01-06-2015, 10:08 PM
  #8  
Seasoned Member
 
firehawk618's Avatar
 
Join Date: Nov 2014
Location: Marysville, WA
Posts: 290
Likes: 0
Received 0 Likes on 0 Posts
Year: 1989
Model: Cherokee
Engine: 4.0
Default

It seems like the Renix system needs 5-6 revolutions to figure out what phase the engine is in......
Old 01-07-2015, 05:48 AM
  #9  
CF Veteran
 
freegdr's Avatar
 
Join Date: Mar 2010
Location: Broward County Fl.
Posts: 47,923
Likes: 0
Received 22 Likes on 22 Posts
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
Default

Search battery cable up grade it helped mine .
Old 01-07-2015, 11:25 PM
  #10  
::CF Moderator::
 
cruiser54's Avatar
 
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,872
Received 1,526 Likes on 1,238 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default

Pretty normal for Renix.

If you want to improve it, some gains can be had by doing Tips 1,3,4, and 5 in my Pink Link below. #7 would be a great idea also.

Have you ever cleaned the throttle body and IAC? Tip 11.

Status of plugs, wires, cap and rotor?
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Brill
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
27
02-06-2020 12:41 AM
Ye Ol' Cherokee
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
0
08-22-2015 01:43 PM
Kevin Icenhour
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
2
08-21-2015 08:22 PM
Buddylove1991
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
2
08-20-2015 08:28 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


Quick Reply: 90 Cherokee Wagoneer 4.0 slow to start (VIDEO)



All times are GMT -5. The time now is 05:17 AM.