I will be as thorough as I can be. 1989 dodge d100 318. i have replaced fuel pump,fuel filter, fuel regulator on throttle body, replaced the throttle positioning sensor, map sensor, plugs wires,ignition coil and distributor cap & rotor. i can stand on the accelerator and will accelerate very slow. Has very little acceleration power. get on the highway can only get up to 55 mph. i have pumped the pedal a couple times and it will open up and go full throttle but it doesnt happen every time i pump the pedal.Can Someone please help!!!!! the next task I am going to go through the codes. any and advice would be GREATLY appreciated!!!

 

Check the Codes...

What is the fuel pressure...

Have you checked the timing?

 

Could very well be the injectors. Look down in the throat of the throttle body to check the injector spray pattern. There should be a fine cone of atomized fuel at the base of each injector that reaches the sides of the throttle body with no gaps or streams. Low ambient light and a flashlight helps to show off the fuel cones easier.

 

Ok I forgot both of yr replies it has recomended pressure from fuel pump and at the throttle body. I have replaced bOth injectors. Checking codes it gives injector circuit code but can't find injector circuit in book or on truck.

 

Have you checked the spray pattern on the replacement injectors? I have seen injectors not spray properly right out of the box. A problem with the injector circuit may also effect the spray pattern.

 

They both spray right together. That's the code it's giving when checked the codes is injector circuit

 

Do you see any extra "dripping" from the injectors?

What was the fuel pressure at both key on\engine off and at idle?

What codes are you getting?...did you by chance clear the codes to see if the same code returned?

Have you checked the timing?

 

Haven't checked timing. Can you tell me how to clear the cOdes. That's what I want to do is clear codes and see what new code appears. Thank u for yr help!

 

Can anyone tell me how to clear codes completely. I know take battery cable off and it will turn the light off and code 12 means that but I want to clear codes to see if they I hector circuit code still comes on.

 

Disconnect the battery for a few minutes...that will clear the fault codes