running down the road,engine light comes on then loses power. let up on pedel twice and it runs fine. it shows the codes 0460 1693 0121 with the key trick. at 198000 i replaced the lift pump and injector pump. its a 2001 6 speed,reg cab 2wd all stock.i need to get 500000 out of it. 8000 miles sence pump replacments. help!!!!

 

Welcome to the site. sounds like you fuel level gauge don't work, and you have a problem with you APPS, might just be a poor connection, un plug it and blow out the socket and try that. I had this code once (0121) turned out to be my ECM. That's probley not your problem tough.

 

0460 Fuel level sending unit- no change over miles
0121 Tp sensor does not agree with map