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I been JINXED, now my "91" 2.5L is losing power at high RPM's. Grrrrrr!!

this is what I was thinking, remove the coil from the jeep and give it a shake, if it rattles it has overheated and needs replaced

I just went through a similar situation with my 91 yj , the starter motor would turn the engine over nice and strong but the engine would'nt run. turns out while I was replacing freeze plugs the CPS (crank position sensor) plug got knocked loose. A little wiggle on the plug and a push in to...

pull a plug wire and check for spark while you turn it over, if you have spark dribble some gas down the carb and see if it fires off, start with the simple things !

I pinched my fuel line between the frame and a rock. The engine ran fine for 2 miles and would die. I would sit for 5 minutes. and the pump pressure would force fuel past the pinch point and refill the fuel line past the pinch. drive 2 miles set 5 minutes. do it over and over. also remove your...

I had the same symptoms. I purchased an "Inline spark checker light" from Harbor Freight for $4 to help troubleshoot the problem . Connect the light between the coil and distributor. When the engine starts missing check the light to see if it is blinking in time with the miss. I used longer...

Might crawl underneath with a bright light and small mirror to do a visual inspection. Let me say I suggested this to a member on a different forum and he found cracks in his exhaust manifold. This problem is more common than might be expected. The exhaust manifold can be removed in 90 minutes...

I have a 91 yj 4 cyl and I speak from this experience. My distributor timing is not operator adjustable. there's a tab on the engine block that prohibits it from being turned, the computer sets the timing from information collected from the engine parameters while it is running. That being said...