4.7 pinging under load
#1
4.7 pinging under load
'00 Durango 4.7. im getting some moderate pinging under load bout 2500-3500rpm. cant get it less than that because it shifts down when trying to load it up, and its hard to hear if theres any past 3500, sure there would be if I could get enough weight in it to load it up at that rpm.
anyway no knock sensors on '00, thinking it really SHOULDN'T be pinging. what should I be looking for?
anyway no knock sensors on '00, thinking it really SHOULDN'T be pinging. what should I be looking for?
#2
#3
been thinking I should try a tank of midgrade, just always thought these engines are suppose to be fine with regular(87 octane here in Canada). I have bought gas all over the place to see if gas from different stations would make a difference. its done it since I put it on the road last spring I just never realized how much till I was out with my trailer not to long ago. if im not towing I either dont stay in the range long enough or just don't have the pedal down enough in that range to cause it very often.
i'll get a tank of midgrade soon and see what happens, I am only a few minutes from the border so probally go get it in washington wheres it cheaper then here in BC.
i'll get a tank of midgrade soon and see what happens, I am only a few minutes from the border so probally go get it in washington wheres it cheaper then here in BC.
#6
these things are supppose to be able to run just fine on regular grade gas. if a vehicle designed to run on regular grade gas needs mid or high grade gas to run without pinging then something is wrong.
#7
Trending Topics
#8
What is your temperature running at when the pinging occurs? Is it normal, above normal, or below normal?
I had some pinging issues on my truck after having it reprogrammed. Thought i was running crappy gas as well and put in some 104 octane boost but still pinged. Later discovered my temperature was running at near 190 when I have a 180 stat. The modified pcm was set for 180 for optimum power. I guess with engine running hotter than usual, pinging occured.
I had some pinging issues on my truck after having it reprogrammed. Thought i was running crappy gas as well and put in some 104 octane boost but still pinged. Later discovered my temperature was running at near 190 when I have a 180 stat. The modified pcm was set for 180 for optimum power. I guess with engine running hotter than usual, pinging occured.
#9
yup, just trying to finish off a heater core so it can drive again and burn off enough gas to put more in(like that will take long lol). just saying that high octane is not a permanent sollultion.
#10
What is your temperature running at when the pinging occurs? Is it normal, above normal, or below normal?
I had some pinging issues on my truck after having it reprogrammed. Thought i was running crappy gas as well and put in some 104 octane boost but still pinged. Later discovered my temperature was running at near 190 when I have a 180 stat. The modified pcm was set for 180 for optimum power. I guess with engine running hotter than usual, pinging occured.
I had some pinging issues on my truck after having it reprogrammed. Thought i was running crappy gas as well and put in some 104 octane boost but still pinged. Later discovered my temperature was running at near 190 when I have a 180 stat. The modified pcm was set for 180 for optimum power. I guess with engine running hotter than usual, pinging occured.