I have a 2003 ford ranger that originally only shook when I drove at around 70 mph. Over time the shaking got worse and seems to happen more often. It shakes the most when it is in park idling or when I'm at a red light. Enough to shake m whole body. The check engine light often blinks while this is going on. I recently replaced all the injectors which didn't really help the shaking it just helped a no start problem, I also just replaced all spark plugs with Motorcraft ones and the shaking seems even more constant now even after I changed the plugs. I cleared all codes which said I had multiple misfires and the check engine light started blinking again within 1 Mile after clearing codes. This has become really frustrating and costing me too much in such a shot amount of time. Any suggestions on what to check next or what the problem might be? Also when I accelerate it drives okay up till about 55 mph the it shakes bad and if I lt of the gas it goes back to normal but when I accelerate again it continues to do this unless I go above 65 or below 50. Thanks for reading I would really appreciate any help.

 

Many times a coil will break down under load. The better way to find this is with a scan tool that ill tell which cyl(s) are misfiring.
If it is the same one or two cyls it could be something confined to those 2 cyls. If multiple cyls we now need to look for what affects all cyls.

 

Thanks for the help but that dint do much for me. I already said I looked at the codes and I took care of wat they said to do and nothing helped. Its 33different cyl ttht are misfiring. I don't need help on how to fund out how people normally check codes. The codes are doing nothing fir me I need a suggestion from someone who may have had this problem before or are extremely familiar with early 2000s ford ranger, but again thanks for the help regardless

 

There is a difference between the info a scan tool can provide and codes.

As you know codes don't always point to a defective component, , but the codes usually provide some direction.

Can you provide the codes you received ?

 

I can provide them later after I get out of my class. I don't have the sheet with me. Around 7 central