92 k1500 wants to die with 1-5% throttle

[nitrosport_5]

My truck is a 92 k1500 with a stock tbi 350. Just recently it started running rough. When navigating a parking garage at slow speeds Thursday i noticed that with just off idle throttle input it would want to die when i let off the throttle, and if i held steady at that low throttle it would run really rough. It idles perfect, and it runs great at mid-high rpms. It will pull from a dead stop with wide open throttle like nothing is wrong.

Any suggestions to look for? its not displaying any codes. would a dirty map sensor be the cause? bad o2 sensor?

 

[evilunclegrimace]

Check your TPS.

 

[NightRunner]

TPS is a must to check. Also replace your fuel filter, my C1500 exhibited the same exact issue, wouldn’t stay alive unless I gave it more than like 5 to 10 percent throttle. Fuel filter replaced and it ran like a top.