EGR on 09 chassis cab
#1
EGR on 09 chassis cab
I have a bone stock 09 cab and chassis 3500 with manual trans and about 2000 miles on it. Overhead mpg is usually around 18 and I rarely go over 65 since it's a 4.10 ratio. I tried unplugging the egr and crossover connections and lost some power, the truck didn't seem to be running right and the overhead said 5-8 mpg. CEL came on as expected. I was worried something might be different with the 09's so I plugged the stuff back in. My mileage was around 8mpg for a while and slowly came back to normal. Is this what normally happens, and should I give it enough time for the ecm to adjust? Does anybody else have experience with 09 or late 08 trucks?
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[QUOTE=shooter71;2329555]I have a bone stock 09 cab and chassis 3500 with manual trans and about 2000 miles on it. Overhead mpg is usually around 18 and I rarely go over 65 since it's a 4.10 ratio.
First off, if your overhead is showing 18 with 4.10 gears, IT IS WRONG!
My 2007 has 4.10 gears and I run with the cruise set a 65mph and the best I have seen at 25-k miles is 14.7 on the overhead and right at 14 by hand. The first 20-k the best I seen was just over 13!
I would check it by hand then go from there.
First off, if your overhead is showing 18 with 4.10 gears, IT IS WRONG!
My 2007 has 4.10 gears and I run with the cruise set a 65mph and the best I have seen at 25-k miles is 14.7 on the overhead and right at 14 by hand. The first 20-k the best I seen was just over 13!
I would check it by hand then go from there.
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