Guys I have been having the same problem with my truck now for a while and no one can tell me what it is. I thought it was the fuel pump at firtst but it does it so intermitantly. When I am going along the truck will buck and chug and the more I try to press on the gas the more dead pedal/ the motor cuts out. I could drive it for a couple days and not have it do it, other times it will do it all of the time. Weather is not a variable it does it in all conditions. It has new Autolit Plugs and Wires.


My question is will any of the followign sensors of of a 94 3.0L work on my 94 4.0L?
MAF(Mass Air Flow)
TPS (Throttle Position Sensor)
Crank Shaft Position Sensor
EGR Valve
O2

If so which one should i try first? If not does anybody have an idea of what the issue could be?
THis is my only transportaion and I have been getting rides from co-workers. Cash is tight and its possible to spend thousands and never find the problem. I put it on a code reader and it told me TPS and O2 sensor (left bank). My MAF I swapped with my brothers truck and it didnt do any good to mine or bad to his.


Any insight is appriciated.

Thanks,
Tj Raceace73@yahoo.com

 

Hi, I had a similar with my 4.0. So your throttle position sensor that’s on your throttle body not only tells the ecm where your throttle is but it tells it the base idol throttle position. To check if this is getting correct power you can simply take a multimeter to it and check it. If it gets power, test if it flat lines. Which means take it out and slowly turn it consistently, if the multimeter doesn’t consistently go up and it picks up a dead spot then your tps sensor is dead. But main thing to check is to see if it’s getting and sending correct amount of power.

 

Hi, I had a similar with my 4.0. So your throttle position sensor that’s on your throttle body not only tells the ecm where your throttle is but it tells it the base idol throttle position. To check if this is getting correct power you can simply take a multimeter to it and check it. If it gets power, test if it flat lines. Which means take it out and slowly turn it consistently, if the multimeter doesn’t consistently go up and it picks up a dead spot then your tps sensor is dead. But main thing to check is to see if it’s getting and sending correct amount of power.