I got 37000 miles on a 09 dodge ram 5.7, and the other day i hit the gas to pass this one vehicle on the freeway, i think it got to like 4000-4500 rpms or so, and the check engine light started flikering. I led off, hit it again and then nothing. I did notice that the engine is surging a little bit under acceleration. A heavyer accelartion. It did not used to do it. I have not changed the spark plugs yet. The dealer wants to much money, and i have not found the day to do it yet. However that day is coming soon. Would this surging, would this be from sparkplugs, perhaps fuel filter? Where is the fuel filter located? What is the best possible spark plug for someone that drives alot.Something that wont void the warranty. Has anybody experienced this ? Last question, how hard is it to change the spark plugs on the brake booster part. Do i need any special tools? How many beers?

 

My truck did the same thing. It has happen twice. I was on the highway doing about 70 and stepped on the pedal to pass and i heard a pop and then the truck took off. The check engine light came on for about an hour. Same thing happen the other day. I have 34,000 miles on my truck

 

Need to pull codes.Spark plugs more then likely NOT your issue.Let us know what they find.Use the same spark plug thats already in it.Fuel filter is part of the fuel pump.Its in the tank.

 

I changed the spark plugs and it seems the issue is gone. When i looked at the old spark plugs, to me it looked like they were fine. I dont understand what makes them fail after only 30000 miles. I asked a service advisor about the posibilty of going with platinum, and he said to stay with the regular mopar NGK spark plugs because of missfires.
Yeah i found out that the fuel filter is on the fuel pump. Not if that is more efficent. It sounds like its more of a headache. And to change the spark plugs, you would need alot of patience and some good tools. Now i am off to the dealer to see why are my front wheels making a hauling noise and to find out what pulley is making a squick noise. I hope is not bearings, however the rear end bearing went out at 18000 miles so i would not be surprised

 

I was wondering that myself why only 30000 miles for spark plug change.Now for me I am nervous that won't be soon enough. If you are a low mileage person like me and will take 4 years or more to put that mileage. I am worried about them rusting in and would that be covered under extended warranty or is that regular maintenance. They don't say 30K or 3 years whichever comes first but I also don't want an engine that has 3 helicoils either.

 

I still don't think the surge was a plug issue.Was battery disconnected when work was done? Was any flash updates done? There was one(a update) for engine/trans performance.Slight widening of the plug gap due to wear should not cause a engine surge.Bet there's Hemis out there with 60k plus on original plugs with no issues.But as long as it runs better is the main thing. I have sent a question to NGKs Technical dept.Asking if any issue going to their laser cut replacement platinum plug for the 5.7 Hemi.

 

Well i just got back from the dealer, and after checking the stored codes they told me that cilinder 3 was missfiring. I asked the service advisor about the ngk platinum series and they told me that most of the time those plugs dont work. I will invest in getting an obdII scan tool so i can see all the codes that this vehicle puts out. I found one for about 180$ at sears http://www.actron.com/product_category.php?id=249
I think in the long run it will pay for itself, since a diagnostic at the dealer is 85 bucks.

 

Thats a interesting statement.Most of the time they don't work.So some of the time they do? I don't think he really knew is what it sounds like.The only difference in the two plugs is the tip.The platinum is longer wearing.I'm curious to the reply I get from NGK technical.I'd almost like to put a set in mine early just to see if its one that is most of the time.LOL The NGK site has either or listed for the hemi.

 

Don't quote me on this, but I have been told each cycle gets 3 spark ignitions. 2 at TDC and 1 at BDC to burn hydrocarbons to pass 50 state emissions. But I don't know if there is any truth to that. So the spark plugs are being used 150% more than an average vehicle.

 

Yeah i saw that too when i looked on their website. Its crazy. Should we call mythbusters?