I own a 1998 Jeep wrangler with the inline six 4.0. Latley my jeep has started to have problems with acceleration. As soon as i leave the house to go for a ride it feels like the motor is being choked. The only wierd thing is that as soon as the engine is warm, the problem disappears.
I have already tried the spark plug coil, spark plugs, fuel injector cleaner, and i have checked the air filter. Im in over my head on this one, please help, its time to go four wheelin
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hi no there is only the ones on the inside the layout should be like this for your one
Country of Origin
1 = United States
J = Jeep
4 = MPV
Gross Vehicle Weight Rating
E = 3001-4000 lbs. F = 4001-5000 lbs.
Y = Wrangler 4×4
1 = Sport 2 = SE 4 = Sahara
9 = Open body
P = 2.5L Unleaded Gasoline S = 4.0L Unleaded Gasoline
0 through 9, or X
W = 1998
P = Toledo #2
Vehicle Build Sequence
Six Digit Number
incase the picture did not come out
1 Country of Origin 1 = United States 2 Make J = Jeep 3 Vehicle Type 4 = MPV 4 Gross Vehicle Weight Rating E = 3001-4000 lbs. F = 4001-5000 lbs. 5 Vehicle Line Y = Wrangler 4×4 6 Series 1 = Sport 2 = SE 4 = Sahara 7 Body Style 9 = Open body 8 Engine P = 2.5L Unleaded Gasoline S = 4.0L Unleaded Gasoline 9 Check Digit 0 through 9, or X 10 Model Year W = 1998 11 Assembly Plant P = Toledo #2 12-17 Vehicle Build Sequence Six Digit Number
I also have an '89 Wrangler with a 4.2 liter inline six. I'm afraid that the spark plugs aren't on the same side as the manifolds. Mine is being a pain in the *** for me. The intake is lining up fine but the exhaust is off by about 1/4 of an inch in the way of a bolt. Was hoping for some solutions, left disappointed.
Click of the following direct, Free Link. It has several Serpentine Diagrams, including the one for your 1998 Jeep Wrangler 4.0L In-Line 6-Cylinders based upon your Engine Options (AC/No AC, Power Steering/No Power Steering, etc.).
The Link Page ALSO has the 2.5L In-Line 4-Cylinder Serpentine Belt Diagrams with their various engine options.
Included are the with AC / without AC Routing.
Mate.If you have done what you said,I think it might be just a small engine timing problem.The plugs that are recommended are champion RC12LYC,gap 0.035 in, just make sure yours are compatible.and the gaps are correct.The only other thing it might be is a really dirty fuel filter or injector.Check the other things first.Hope this helps
Hi Dava224 i had the same problem with my 1989 CJ. when it was cold out i would pump the gas pedal 3-4 times before turning the ignition. it puts a small amount of fuel in the motor without stalling it out. it wont start as hard. another good idea is to keep some fuel stabalizer in the tank everytime you fill up. hope this helps