Tune up
#1
Member
Thread Starter
Join Date: Oct 2010
Location: Spokane, WA
Posts: 212
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1989
Model: Cherokee
Engine: 4.0
Tune up
So I want to do a tune up on our jeep. What would you guys suggest? It's a 1989 Xj with 194,000 miles and it's an automatic. So far the list is:
Spark plugs
Air filter
Oil change and filter change
I was suggested to do the cap and rotor too and the fuel filter. What do you guys think? And anything else? Thanks Ben and Kayla.
Sent using CherokeeFM
Spark plugs
Air filter
Oil change and filter change
I was suggested to do the cap and rotor too and the fuel filter. What do you guys think? And anything else? Thanks Ben and Kayla.
Sent using CherokeeFM
#3
Member
Join Date: Jun 2010
Location: HUNTSVEGAS AL.
Posts: 171
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1988
Model: Cherokee
Engine: 4.0 renix 4.7 soon to drop back in
get ya a can of carb cleaner spray thru the map sensor line and pcv line ... and clean i think its called the ?airc? sensonor its located on the intake manifold oh and you cant wrong with a wix oil filter .... buy ya a can of sea foam as well
#4
CF Veteran
Join Date: Nov 2010
Location: In the middle of Minnesota!
Posts: 5,805
Received 99 Likes
on
88 Posts
Year: 1999
Model: Cherokee
Engine: 4.0
*Spark plugs (Champion copper gapped to .035)
*Plug wires. Don't buy any "el-cheapo" wires
*Distributor cap (with brass contacts, not aluminum)
*Rotor (again, premium level rotor)
*Fuel filter
*Air filter
Depending on history, ALL fluids. Fluids are the lifeblood of your vehicle! Oil, coolant, tranny fluid, t-case fluids, differential fluids.
Replace any old hoses, there are only 4 of them. Hoses can rot from the inside out. Radiator cap, thermostat (195 degree).
Cleaning the throttle body and idle air control is not a bad preventive procedure.
*Plug wires. Don't buy any "el-cheapo" wires
*Distributor cap (with brass contacts, not aluminum)
*Rotor (again, premium level rotor)
*Fuel filter
*Air filter
Depending on history, ALL fluids. Fluids are the lifeblood of your vehicle! Oil, coolant, tranny fluid, t-case fluids, differential fluids.
Replace any old hoses, there are only 4 of them. Hoses can rot from the inside out. Radiator cap, thermostat (195 degree).
Cleaning the throttle body and idle air control is not a bad preventive procedure.
The following users liked this post:
KOGR (05-17-2022)
#5
Member
Thread Starter
Join Date: Oct 2010
Location: Spokane, WA
Posts: 212
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1989
Model: Cherokee
Engine: 4.0
Originally Posted by tjwalker
*Spark plugs (Champion copper gapped to .035)
*Plug wires. Don't buy any "el-cheapo" wires
*Distributor cap (with brass contacts, not aluminum)
*Rotor (again, premium level rotor)
*Fuel filter
*Air filter
Depending on history, ALL fluids. Fluids are the lifeblood of your vehicle! Oil, coolant, tranny fluid, t-case fluids, differential fluids.
Replace any old hoses, there are only 4 of them. Hoses can rot from the inside out. Radiator cap, thermostat (195 degree).
Cleaning the throttle body and idle air control is not a bad preventive procedure.
*Plug wires. Don't buy any "el-cheapo" wires
*Distributor cap (with brass contacts, not aluminum)
*Rotor (again, premium level rotor)
*Fuel filter
*Air filter
Depending on history, ALL fluids. Fluids are the lifeblood of your vehicle! Oil, coolant, tranny fluid, t-case fluids, differential fluids.
Replace any old hoses, there are only 4 of them. Hoses can rot from the inside out. Radiator cap, thermostat (195 degree).
Cleaning the throttle body and idle air control is not a bad preventive procedure.
Sent using CherokeeFM
#7
CF Veteran
Join Date: Mar 2009
Location: Visalia, Kalifornia, ussa
Posts: 2,750
Likes: 0
Received 2 Likes
on
2 Posts
Year: 1996
Model: Cherokee
Engine: 4.0
Everything listed above, Lubing is part of normal tune-up and service. Also belts should be checked. Brake fluid and coolant were left off the fluids list, but they should also be done. Brake fluid is one that almost every body leaves off, then they wonder why the wheel cyclinder in the rear brakes are froze up and rusty. Brake fluid absorbs water and should be flush and change at least with every brake job. I do mine yearly, after the rainy season is over.
The following users liked this post:
Lonnie1981 (11-15-2021)
Trending Topics
#9
Seasoned Member
Originally Posted by jeepcherokee99
Wat is the cap n rotor? What do they do? Where do u find them? I have a 99 4.0 WJ
The cap and rotor it was sends the spark to the plugs.... There will be 6 spark plug wires coming out of it. Same side and behind the alternator. Between the 3rd and 4th plug. Next to the oil sending unit. If I had that model, it would show u. My 01 isnt a cap and rotor. But you CANNOT miss it!
Posted by: Dre
#10
Seasoned Member
Join Date: Mar 2011
Posts: 275
Likes: 0
Received 2 Likes
on
2 Posts
Year: 1999
Model: Grand Cherokee
Engine: 4.0
Haynes manuel says I have a coil pack on my 99 4.0 WJ. Should I replace that with the plugs? N is seafoam really worth doing n is there any damage that can b done by doing this?
#11
Seasoned Member
Originally Posted by jeepcherokee99
Haynes manuel says I have a coil pack on my 99 4.0 WJ. Should I replace that with the plugs? N is seafoam really worth doing n is there any damage that can b done by doing this?
Posted by: Dre
#12
Member
Join Date: May 2010
Location: Phoenix, AZ
Posts: 205
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1998
Model: Cherokee
Engine: 4.0 I-6
#13
Seasoned Member
Join Date: May 2010
Location: Suffolk long island
Posts: 406
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1994
Model: Cherokee
Engine: 4.0 L I6
Originally Posted by Gizmo
Where is the fuel filter located on the 98? I was told, perhaps erroneously, it is located in the gas tank.
#14
Seasoned Member
Join Date: Feb 2011
Location: Memphis,TN area
Posts: 424
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1998
Model: Cherokee
Engine: ERH 4.0L 16 Power Tech
A factory Jeep Service Manual is a wise investment if you are planning on doing your own maintenance.
#15
Member
Join Date: May 2010
Location: Phoenix, AZ
Posts: 205
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1998
Model: Cherokee
Engine: 4.0 I-6