98 jeep wrangler 4.0 sport inline 6.
the check engine light came on, loss of power on highway. turned it off and then back on and its driving fine now. the codes are p0301, p0302, p0473, & p0171. 301 and 302 are cylinders 1 and 2 misfire, 171 is burning to lean, and 473 is fuel center system sensor?
mechanic could not clear check engine light.
we just changed plugs, wires, distibutor cap and rotor button. he said he did not no what was going on.
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You mean it cranks but does not start, right ?
The NoBus on the display means the cluster is not talking to the computer. That could be a wiring problem or a component problem.
Have you checked the engine computer for trouble codes ?
I seriously wonder why Jeep used that engine at all. We have several Jeeps here and the only one I hear nearly every week about power and hill climbing problems is the one with the 4cyl. (same year as yours). Adding a taller tire is definitely not a plus. No idea what your gear ratio is but lets say you have 3:73's...with a tire two inches taller, the actual final ratio is around 3:23. Put the small engine up against it and you have about as much grade or hill climbing ability as a ride on mower! There are three practical ways of getting back some performance. The first is simply putting a lower tire on it. Second would be to replace the stock camshaft with one with a better torque curve, perhaps adding headers and an aftermarket intake system as well. Third would be to change both gear sets to something in a 4 series (expensive). Then, you have two even more expensive options: Put a 4.0 engine and all that goes with it into the vehicle or start playing with turbocharging.(you really need to know what you're doing to do that right). Your last option is regardless of how much you like your Jeep, sell it and get one with a 4,0 already installed!!!
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