check engine light goes on and off

hello everyone  and happy new year..............its been a while since I have been on here but having a problem. . yesterday  while driving my 95 full size with a 5.8  and 176000 miles  I started too notice my truck would bog out. it  felt like  it was bucking .it would only last a second or two. while this was happening the check engine light would come on.then go off. it kind of felt like when my speed sensor is going bad but the speedometer wasn't jumping around which I noticed with the speed sensor issue I had. ..any ideas would be helpful.thanks mike..have a great and safe day

First step is to pull any codes and post here.

Yo D,

As Ron advised;

Try a Self Test for Diagnostic Trouble Codes (DTC)s by my pal, BroncoJoe19


PCM stores the Self-Test program in permanent memory. When activated, Self-Test checks the EEC system by testing memory integrity and processing capability, and verifies that various sensors and actuators are connected and operating properly.

Inspect the air cleaner and inlet ducting. KCheck all engine vacuum hoses for damage, leaks, cracks, blockage, proper routing, etc. Check EEC system including the wiring harness for proper connections, bent or broken pins, corrosion, loose wires, proper routing, etc. Check the Powertrain Control Module (PCM), sensors and actuators for physical damage. TPS, ICM, DISTRIBUTOR, etc. Check the engine coolant for proper level and mixture. Check the transmission fluid and engine oil level and quality. Make all necessary repairs before continuing with SELF TEST.

The engine temperature must be greater than 50° F for the Key On Engine Off (KOEO) Self-Test and greater than 180° F for the Key On Engine Running (KOER) Self-Test. Run it around to heat the engine up and shift thru all gears including Reverse. Make sure A/C is off and transmission is in Park (automatic); or in Neutral for a Manual and; release clutch. Then turn off engine, all accessories/lights (close driver's door) , etc.

Do KOEO test First. Post Code(s) here according to KOEO and KOER.

A helper can assist you by counting the codes. Some use their smart phones to record them.

BEWARE OF FAN, BELTS, PULLEYS, HOT HOSES, IGNITION HIGH TENSION WIRES, AND ENGINE COMPONENTS

Or ask local mom and dad parts stores if they will test it for you.

Or purchase a coder reader such as Equus 3145 Innova OBD I Code Reader for Ford EEC IV Engines at Walmart & most parts stores.

GL!

thanks for the help. it  ended up being the throttle position sensor  A.K.A.  the T.P.S.