I have a late model 95 with obd2 and I'm having trouble figuring this out it idles fine and drives fine but whenever I put a load on it like going up a hill at about 2500 rpms or so it will drop 200 rpms for about 2 seconds then come back up don't lose speed but can feel it not throwing any codes I have changed fuel pump map sensor o2 sensor cat fuel filter air filter any thing will help thanks

 

If you are in overdrive sounds like it is just the transmission shifting , try it in regular drive see if it still happens

 

Dose it in any gear and any rpm just mostly at about 2500 not all the time though