Hey, latly I've been having some problems with my jeep and I was hoping someone had an idea of what they were. First off I drive a '92 YJ (4.0L S6). Ok well sometimes when I bring my revs up around 3000rpm or more my engine will lose all power for a split second or a few seconds at the most. Also my check engine dummy light lights up. I originaly figured it was just a blown hose and it was overheating, but my teperature gage doesnt read high. Also I'm not losing any fluids. Nor can I detect any cracked or broken hoses. Any ideas?

dirty injectors, shitty spark plugs, and maybe a clogged fuel rail. the clogged fuel rail seems like a longshot so i would check your spark plugs then injectors. its nothing im sure.