2000 ford ranger xlt 4x4 4.0 when I start my truck letting it warm up and then putting it into gear it sputters almost like it wants to die and also it bucks when accelerating between 50 and 70 mph

SOURCE: Truck dying

there are a few things that would cause that wo all i can tell u from what u said is that u need to check for fuel pressure w/ a gauge then look up the specs online. if u lose pressure after start up the fuel pump is bad. but if it stays good as the truck dies then u do have other issues that someone would have to look it over. u could have a ignition module heating up and opening the circuit or an electronic coolant temperature sensor reading -40 or 300 starving or flooding the engine with fuel pull out a spark plug and ground the threads onto something. and check for spark as it dies. if it stops sparking then u need to look into the ignition system. if it does not then you are looking at a fuel problem or a cam positing sensor. which could shut off fuel injector pulse and ignition fire. like i said alot of componets could cause irratic behavior like this ull just have to start off with the basics fuel and fire before you can jump to any conclusions. oh and fuel filters would cause the engine to run bad but not kill it all at once and keep it from starting. one way to rule that out is to turn the key one for 2 secs then off for 6 secs and repeat a few times this turns on the fuel pump for priming iu the system. if it still does not fire up then somethin else is going on other than the fuel filter.

SOURCE: Replaced wiring harness on 2000 Ford Ranger now truck won't start

2000 ford ranger wont start off switch if u jump the silanoid it will start. new start and ignition switch

Ned C Cook

• 3433 Answers
• Posted on Sep 18, 2009

SOURCE: Vehicle sputters, bucks, occasionally dies out, rich exhaust fume

The MAF sensor is the likely problem. Ca be clraned w/crc electrical cleaner only. Do not touch , rub,or use compressed air to clean or dry. It's located in the intake duct in one of the metal sections. The plug and wires will give it away. Good Luck-Ned-

SOURCE: 2000 ford xlt 3.0 ranger, sudden intermitent idle problems

Study up on what an Idle Air Control Valve does then make your decision. They can be expensive.
Search fault symptoms

SOURCE: 1993 ranger sputters until warm?

replace the Oxygen senson before catalytic converter this sensor tells the computer to send signal to fuel injectors to allow rich mixture upon start up for warm up then leans out mixture as it heats.