Acceleration pinging with 2000 ranger 2.5l

spalmer · #1 (**permalink**) 03-28-2009, 03:32 PM

I am new around here and need some help.

I have a 2000 ranger 5 speed with 2.5l engine. It runs fine in cool weather and when the engine is cool. After and warms up and worse when the weather starts getting warm, I get heavy pinging during acceleration and rough idle. No trouble codes, no check engine light, no overheating. Could this be an EGR issue or something deeper?

Cobra Highboy · #2 (**permalink**) 03-28-2009, 04:30 PM

Most times when you get a pinging you are usually running to low of octane. Most newer vehicles require 87 octane or higher, which inmost places is mid-grade. Try a tank of higher octane gas and see if it goes away.

spalmer · #3 (**permalink**) 03-28-2009, 05:29 PM

Quote:

Originally Posted by Cobra Highboy

Most times when you get a pinging you are usually running to low of octane. Most newer vehicles require 87 octane or higher, which inmost places is mid-grade. Try a tank of higher octane gas and see if it goes away.

I have tried that in the past with little change but will try it again with a new set of plugs. The gas would not account for the rough idle and stumbling.