I have a 2003 ram 2500 5.7 Hemi that is well maintained it has 126000 miles on it .I just last month had the spark plugs, wires PCV replaced fuel system cleaned with motorvac and syn oil change. It ran great for about a week after than then had a marked drop in power and torque over the entire power band. My milage is terrible according to the overhead display and gets worse when hitting hills and inclines as low as 4-5 miles to gallon and even worse when cold. But when on a flat road with no wind its normal Its not showing any codes not when checked with a scanner are any present. It idles pretty much normal although sometimes when coming to a stop its a little on the high side. The engine doesn't sound like it did before this happened and is not quick to rev as it was before and is slow coming down from rpm and the exhaust tone is not the same much more in cab drone. Some one said it could be a bad cat or weak fuel pump. Can you help thanks in advance
have the same problem?
Saturday, February 10th, 2007 AT 1:14 PM