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-   -   CEL Flashing...Stutter at low throttle (http://www.ramforumz.com/showthread.php?t=148924)

KH85 07-30-2013 07:14 AM

CEL Flashing...Stutter at low throttle
 
Greetings all, I'm new to this awesome community. As I'm googling my symptoms, I kept running into this site so I figured I'd go ahead and join. There's a lot of great info and great people on here. Glad to be a member, and I hope I can contribute.

I'm having an issue with my '06 Ram 1500 (4.7L). My gas mileage went way down, so I changed all the spark plugs and even changed all 4 O2 sensors. Once I was done, I disconnected the battery and waited a little bit before re-connecting it. I didn't drive it the rest of the day, and it ran fine to work the next morning. However when I got back in it later that morning, it started stuttering really bad as I was pulling out of my parking spot and the CEL started flashing.

I put it back in my parking spot and started my googling to see what it could be. Long story short, at the end of the day the CEL went solid so I was able to drive it to Advance Auto to get a diagnostic. I notice that it only stuttered when I barely had the throttle open (so I'm figuring something with the air flow). Here are the codes that I received at Advance:

P0300: Random Misfire
P0138: O2 Sensor High Voltage 1/2
P0133: O2 Sensor Slow Response 1/1
P0153: O2 Sensor Slow Response 2/1
P2096: Post Cat Fuel Trim too lean Bank 1
P2098: Post Cat Fuel Trim too lean Bank 2

I got home and disconnected the battery for about 15 minutes, and went back out. I started it up and of course the CEL was off because it reset. The truck actually ran fine until I got to my turn around point about 1.5 miles from my home. It started stuttering again, and the CEL started flashing. I limped it home and parked it. Before I turned it off, I could hear something "knocking".

I'm pounding my head against the wall and don't know where to start. Any help would be appreciated.

Simple guy 07-30-2013 08:42 AM

I was just reading a post on a Chrysler forum about someone having just changed their spark plugs and O2 sensors because of noticed drop in MPG. He started getting P2096 His problem was inferior quality O2 sensors. Did you replace your OEM o2 sensors with Bosch? Do you still have the old O2 sensors?

KH85 07-30-2013 09:55 AM

I put Bosch o2 sensors in it. I suppose I could put the old ones back in and see if the problem is still there.

Simple guy 07-30-2013 10:32 AM

Yeah i'd swap them and see what you get. I mean before replacing them you weren't getting any codes?

KH85 07-30-2013 03:14 PM

A few months ago I would randomly get codes dealing with my o2 sensors but they would go away. I wasn't getting any misfiring like I am now. I figured since I was getting bad gas mileage I'd do the spark plugs and o2 sensors at the same time. I've heard that the tips are really sensitive if they touch anything. So I'm concerned the old sensors may be jacked up since I just took them out an threw them in a plastic bag.

KH85 07-31-2013 09:43 PM

Quote:

Originally Posted by Simple guy (Post 1163097)
I was just reading a post on a Chrysler forum about someone having just changed their spark plugs and O2 sensors because of noticed drop in MPG. He started getting P2096 His problem was inferior quality O2 sensors. Did you replace your OEM o2 sensors with Bosch? Do you still have the old O2 sensors?

Sure enough, I put the old O2 sensors in and it's back to running normal; however, I now have some rattling in my cats, so I'm going to start researching if I need to replace them. Any advice?

BTW, just the new spark plugs made my MPG jump from 13 to 16.

deanhinsley1963 07-31-2013 09:51 PM

KH85 How many miles do you have on the truck? Mines got 104,000 I just bought it and dont know if they have been changed or not. But I dont get but 14mpg.

Simple guy 07-31-2013 10:04 PM

they should be fine as long as there's no oils or water on them.

I mean I'm not saying leave them in permanently. If you see better results with the old ones back in get NTK brand o2 sensors.

KH85 08-04-2013 02:40 PM

Quote:

Originally Posted by deanhinsley1963 (Post 1164611)
KH85 How many miles do you have on the truck? Mines got 104,000 I just bought it and dont know if they have been changed or not. But I dont get but 14mpg.

Mine just turned 105k. After changing the plugs and putting the old O2 sensors in, I ran it up from NC to OH and got 16 mpg. My CEL came back on with the P0430 code (Bank 2 Cat below threshold). I'm hoping that replacing my cats/exhaust system to high flow will help it even more. I also will have my new K&N Cold Air Intake waiting on my porch.


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