1988 Plmouth grand voyager code 26

I have a code 26 coming up which is not enough voltage to fuel injectors i believe. Changed injectors still have problems any ideas?
Does the car run?

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Yes, it does run but at idle seems to surge from 700 to 1100 rpm and idles rough.
Have you cleared the code and has it reset again?

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code 26 relates to the injector driver circuit.The exact conditions necessary to set a code 26 vary by application but the bottom line is always the same.The code indicates that the resistance of the injector circuit is incorrect.The test procedure for this code should begin with identifying the injector connectors on the computer.With the ignition switch off,disconnect the injector connector on computer.Measure the resistance through the injector.The resistance should be greater than 4 ohms but less than 20 ohms.Chances are that if the resistance is incorrect,it will be almost zero ohms or almost infinite ohms.If the resistance through the injector circuit is incorrect,then check the resistance through the injector by itself.Like the resistance check through the entire circuit,the resistance through the injector should be between 4 and 20 ohms.If it is not,replace the injector.If it is,check the resistance through each of the wires connected between the computer and the injector.The resistance through these wires should be virtually zero.In fact,on most ohmmeters,it will read zero ohms.On the four cylinder turbo applications,this code relates to injectors numbers one and two.You would need to buy a subscription to alldata to get detailed wiring diagrams.