Hello everybody i have a dodge ram 4.7L and had over 30k miles on it so i decieded to change the plugs on it but now after replacing them all the light came on for the engine what should i do

 

Your plugs were likely good for way longer than that, but anyway take it to Advantage, Auto Zone, etc., or do the key dance (make sure you have pen and paper ready).

 

Happened to me after I did mine, I pulled the codes and all I had to do was make sure everything was tightened down all the way and in the right order. Check your coils again.

 

Gapped properly? Coil packs seated properely? Didn't crack a coil pack from overtightening?

Common issues I see on coil-on-plug vehicles from customers.

 

Only way to know ANYTHING is to know what the DTC codes are.

 

Just pull your negative cable off your battery wait a few minutes hook it back up , that should reset the code.

 

yeah but resetting the code wont tell you what the problem is. If there is a code it will just come back so you need to find out the codes and fix the issue.

 

if you don't remove the battery cable when you change the plugs could get a code. If you forget to plug the MAP sensor back in and then energize through your ingniton that may set a code as well. I have seen this many times. The code will reset when you disconnect the battery. I have never seen them come back in this case. I get people with false codes like this when changeing plugs all the time if they don't disconnect the battery first. They make allot of money of of false codes.
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