1994 5.0- sputters once it reaches norm operating temp. I've recently changed air filter, fuel filter, and cleaned the injectors. It shows a couple of codes that are all electrical MAF voltage to low if I remember correctly and TPS voltage to high. I'm wondering if my problem is more mechanical or if those codes could be the source of all my problems. Spark plugs and alternator are both 2 years old. Changed at the same time. Other than the truck is bone stock with everything else from the factory. Thanks in advance.

 

I'd change the tps and gently clean the maf with mas airflow cleaner.

 

I had a problem where it would run fine until it was warm then bog right down and run like crap. That was my O2 sensor.

 

Thanks for the replies guys. I was under it this evening and noticed the plug for the o2 sensor had the clip broke off of it and that was causing it to wiggle loose. Hopefully I can find an o2 sensor to replace it with.

 

Just clean and tape the plug so it won't wiggle loose. If the sensor works fine when it's plugged in properly, there's no sense throwing away money over a missing clip.
IMHO