I have a 95 YJ. I am new in the jeep business however still he weekend mechanic at times. I have a miss when the jeep is under a load.
I have replaced the plugs wires, cap and rotor thinking it was a wire problem still have the miss. This YJ has the 2.5 with a 5 speed. I just bought this rascal with 112k on the odometer any suggestions.
Sounds like spark is taken care of... What about fuel issues? Clogged injectors, low fuel pressure, etc.
Also, check all of your electrical grounds and make sure they are tight and making good contact.
1995 YJ 2.5L 5-speed Rio Grande (with factory puke patterned seats) - RE2.5" lift with 31x10.5 Duratracs - Tom Woods HD SYE and custom shaft - D30 Aussie locker with Posi-Lok cable - Solid Diff covers - Tom Woods CV front driveshaft
My 94 acted like that at cold temperatures (below freezing) and it ended up being the ecu had moisture in it. try a hair dryer on the ECU for 30 mins then take it for a ride and if it runs better it might be your problem. I purchased a napa reman 3 years ago for around 380$ but it looks like all they did was replace the capacitors because there is gobs of white silicone where the capacitors are located. I have read a few posts of people replacing these themselves but I am not that good at electrical soldering so I chose the expensive route. I ruled out fuel issues and a bad coil before by simply throwing $ at it. But a spare coil is handy out in the boonies anyway.
I hate jeep Libertys with the bumper sticker: "It's a jeep thing you wouldn't understand" or "if you can read this roll me over"
Thanks folks. I have not replaced the coil. I have not replaced the fuel filter however the guy that had it before me replaced the in line filter but never said anything about the fuel tank. I just hate to keep chasing this down spending money on issues that may not be the problem. I am suspicious of the injectors.
Fuel filters are cheap and only take a few minutes to install. Its over the driver's side rear axle.....there is no filter per se in the tank but there is a sock type screen that has been known to plug up...
a weak spark will cause a miss under load too
2013 WRANGLER SPORT 2 DR., V-6 ,AUTO,HARD TOP
(Sold)1994 Jeep Wrangler 2.5L, Bestop top
/w steel half door and slider windows
5 speed, 2.5" lift, 31" tires,rack lights