I just changed allot on my truck. New transmission. Crank and cam shaft sensors, plugs coils, Still pulling po1128. Engine runs smooth until it warms up. Then it shuts down. When test driving it is hesitates on exceleration. But does not shut down. Shuts down when idling. HMM I have been told to replace the intake sensor. Wondering if this will work has anyone else experienced this?

 

Have you tried the O2 sensors?

 

The other conditions could have fouled the o2 sensors , try running some cleaner in the gas , try sea foam an or injector cleaner like lucas ,,if that doesn't help then may be time for o2 sensors and use oem if you replace

 

What year truck and what engine???