I posted a thread not to long ago i cant find it now, anyways ive been on the hunt to find why im cutting out during mid to high rpm's so far i've replaced the, cap, wire, rotor, plugs, tps, and the ignition coil. its gotten alot better but its still happening. when it originally started it was around 4-5000 rpms that it would cut out, as time went and as i ignored it due to money issues it started moving down the tach. before i started replacing ignition parts i would happen around 2800 rpms. when i replaced the cap, wires, rotor, plugs and tps it went back up to around 4000 rpms before it cut out. then again it started moving back down the tach. so last night i replaced the coil, now it'll happen around 4500-5100 in first and in second its around 4000. im going to check the fuel pressure tonight if i can. anything anyone else would recommend looking into?
thanks in advance

 

Possible crank sensor? Although, the behavior isn't quite right for that...

 

also when its cutting out i can smell the exhaust pretty profoundly. could my cat maybe neeed to be hollowed out, or maybe an o2 sensor?

 

Wouldn't hurt to check. Try driving with the pre-cat O2 sensor unplugged, see if it makes any difference. (It will set a CEL though....)

 

take the throttle body apart and check your iac and clean it

 

ok so last night i took my spare throttle body off the manifold and cleaned the hell out of it and its components, put it on today along with a new thermostat and speed sensor and its a screaming beast again thanks for the help guys. lol now i need to turn my rotors, replace ball joints and look into a shift kit as well as a few other tranny parts and ill be golden.