Replaced Plenum plate! PICS
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Did you do a tune-up after you finished the plenum job? It is not merely the presence of oil in the plenum that causes performance and mpg losses, it is what the oil does when it fouls your plugs, cat, etc.... If you suspect you had a leaky plenum, and you fixed it, that should be followed immediatly by new plugs and a general tune-up. Otherwise, you are still driving around with all the same problems the original blown plenum caused. It won't get worse since you fixed it, but it won't get any better because you fixed it either, until you do this other tune-up.
Last edited by Silver_Dodge; 03-06-2011 at 02:07 PM.
#9
I did half of one. I didnt have enough money to buy the O2 sennsor but i did change the cap and rotor while i was back there.
By the way, there is only 2 o2 sensors on our trucks post 96 right? OBD 2, one pre cat and one after...
The guy at the parts store keeps telling me that there are 3. One on either side, after the exhaust manifolds, and then one after the cat. Im pretty sure thats wrong and i was under there looking yesterday when i did the starter.
Another thing too, he also says that if you don't have a cat, like me, that your 2nd o2 sensor really dosnt do anything so i shouldnt have to worry. Could that be another reason why my milage is the pits?
I dont have any check engine lights the only warnings that are showing are (ABS) and ((P)(!)), But funny story the
"Yellow ABS Light" relay under the hood was removed so the light wouldnt be on, is there a check engine light relay?????
By the way, there is only 2 o2 sensors on our trucks post 96 right? OBD 2, one pre cat and one after...
The guy at the parts store keeps telling me that there are 3. One on either side, after the exhaust manifolds, and then one after the cat. Im pretty sure thats wrong and i was under there looking yesterday when i did the starter.
Another thing too, he also says that if you don't have a cat, like me, that your 2nd o2 sensor really dosnt do anything so i shouldnt have to worry. Could that be another reason why my milage is the pits?
I dont have any check engine lights the only warnings that are showing are (ABS) and ((P)(!)), But funny story the
"Yellow ABS Light" relay under the hood was removed so the light wouldnt be on, is there a check engine light relay?????
#10
The ABS relay is for the 4wal verison. If the parking brake lite is on as well, that is probably why the abs light is on. (or, the sensor in the rear diff is toast.)
You only have two O2 sensors. (unless you have california emissions, which seems highly unlikely....)
Post cat O2 monitors catalyst efficiency. The PCM will set a code if it doesn't see the right readings from it, but, it won't affect how your truck runs regardless.
Bad O2 sensor will give you crappy mileage. (as will a host of other things....)
You only have two O2 sensors. (unless you have california emissions, which seems highly unlikely....)
Post cat O2 monitors catalyst efficiency. The PCM will set a code if it doesn't see the right readings from it, but, it won't affect how your truck runs regardless.
Bad O2 sensor will give you crappy mileage. (as will a host of other things....)