Hello all, New problem! Now I changed my spark plugs 4 days ago and I now have a MIL on. I changed to NGK V power plugs. Never drove it until now 25 miles later light came on! I have not went and had the code checked yet but I can bet it will be something to do with the spark plugs (misfire, etc..)Anyone else have these! Do they work alright in your vehicle? Let me know!

 

basic thing to do is go get the code run. that will lead you in the right direction. never heard of a plug change throwin a cel.

 

I'll ask the stupid question...are they gapped correctly? If so, I would recommend going with champion plats. I decided to swap my engine to a hemi, and one of the issues was spark plug fouling. It seems even if you gap the plugs and reprogram the computer, it only lasts a couple of months. I had bosch plat +4's, and my mpg went from 18 to 5.('01 ram 1500 5.2 man, k&n cols air intake, heddman shorty hedders, catback and msd 6 box and blaster II coil) I changed the spark plugs to champion and the gas milage was better, but the truck would stall while coasting if I pushed the clutch in too fast sometimes. I asked the question and the dealer said the programming only stays for as long as the computer has power. I don't know if they were full of crap or not, but now I have a new HEMI in my '01.

 

thats why you never use bosch there junk and ngk's are fine i'm using them and have 30,000 on them as we speak . i'm sure its not from the plug's unless you have a miss do you notice a miss . newer engine's need platnium's older engine's do not runing platnium's in an older engine is a waste of time the ignitions where based on copper core plugs unless you have mod's that require them

 

Perhaps you accidentally busted a spark plug wire or something. That doesn't throw a code in an OBD I system, but I guess it might in an OBD II like ours.

 

did you happend to cross igniton wires, make sure you have the right firing order.

 

My truck will throw a misfire and run like **** if I use the Autolites. I ran them for 300 miles and developed a misfire on #5 along with dropped mileage. I reinstalled the Champions and it runs like a Swiss watch.

Really? Bosch plugs are junk? That shows what you know, because many older European cars run strictly Bosch plugs. Also, Bosch holds the patent on the resistor, so every spark plug manufacturer has to pay Bosch a licensing fee.

 

dodge isn't european your car was designed to run them not dodge good comparison

 

and yes obd1 will throw a misfire code on which cylinder

 

Lucky you, I have had several vehicles that I changed to platinum or other high end plugs (Accel) that caused me to throw a check engine light and caused severe missing.