Is anyone else having issues with emissions on 08 cat engines? Bought two new 08 388 petes in May started out first 3 months with average milage 4.8 on one and 5.3 on the other. By the 4th month check engine lights have been coming on and engine ecu derates hp and there you sit. We have been to the shop for updates from cat roughly 10-11 times with each truck in the last month and been to 3 different cat shops. Had to get one towed once! Two issues here for me is I'm tired of looking for the next cat shop! And most costly to this issue now is for the last 2 months my milage has dropped to 3.2 on one and 3.4 on the other! Cat says there is nothing wrong with the engines, and that I am expecting too much from them. I am to the point were I am starting to believe them maybe I am expecting too much!! But why would they get 5mpg the first 3 months and now after 50-60000 miles they barely get 3mpg. I feel there particulate trap is plugged but the only way they will change it is if it fixes the problem they will warranty it but if it don't then I have to pay for it. Cat notified me today that the cost of this filter trap is $6700.00 dollars for EACH TRUCK! They are designed to be cleaned "BUT" they don't have the machine avaliable YET to do it!! I talked to my Pete dealer this afternoon, he specing me out two new 388's with cummins engines. What else can I do?
Cat 08 emissions
Discussion in 'Trucks [ Eighteen Wheelers ]' started by flatop, Nov 29, 2007.
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e500gvr: I don't know how the ecu is to warn me that it is about to derate me engine? As far as the 3 position switch it is in the automatic mode. It is not all the way down. Currently I have apprx. 60000 miles on one unit and 70000 on the other. As far as the blue "windex"cleaner goes it was done as follows: Break in oil ran till 20,000 miles, Changed. Ran till 42000 miles changed oil again. At 42500 check engine light came on took to cat blow by filter was pluged. Cat changed blow by filter and put blue cleaner in system. 2 days later check engine light on again, filter plugged again, changed filter and put cleaner in it again. To make a long story short, all updates are now suppose to be done. These engines have a tremendous amount of blow by-Rear main seals have been changed. Have blown out one turbo. On one of the updates they rerouted the air intake for the regeneration system from the aircompressor. I guess the engine was pulling oil passed the comppressor and it took out the spark plug and its componets of the regeneration system which was why it derated on one instance.Cat now is tell me to use the cleaner every 10000 miles instead of the original recommended 40000 miles and to change the blow by filter every 20000 miles instead of the recommended 60000 miles. As all this has unfolded in the past 2-3 months my fuel milage has not recovered! Once the check engine lights started coming on and all these problems started to surface my milage was 4.8 to 5.3 before now is 3.2-3.4 I wouldn't be so pissed if I would never have gotten the 5 mpg-but those engines were doing it from the start -if anything it should be getting better as they break in instead of worse! Cat says it was a fluke that they did it, but two trucks = two flukes. They also tell me I'm the only one having issues! Oh one other thing when the ecu derates, it does not give you a warning in advance. And if you are in GODS county the middle of no were, top speed at that point is 25-30mph on the flats try climbing a grade or two! Flatop
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