Light is on and when I press the gas the car shudders. The engine doesn't bog down but you can feel the vehicle jerk when the gas is pressed. Any thoughts?
					
				
			
			 
			
				Light is on and when I press the gas the car shudders. The engine doesn't bog down but you can feel the vehicle jerk when the gas is pressed. Any thoughts?
Jump the ecu and find out what the code is.
					
				
			
			 
			
				Not familiar with that process, I will try looking it up. Thanks for your help.
Maybe you could start by telling us what you drive?
					
				
			
			 
			
				98 civic, b20 with b16 head. P28 ecu chipped with hondata
					
				
			
			 
			
				There is a jumper plug, usually near the ecu in the passenger footwell, that you can insert a jumper wire into. it should flash out a diagnostic code via the cel.