The filter is on the pump in the tank. I thought it could be the pump. But after the engine warms up the problem stops........ Plus I was looking into the cheaper possibilities.

I m going to take it down to get the fuel pressure checked today!!

Thank you

 

On a side note ....last night I also replaced the battery and totally cleaned the IAC valve

 

I'm still saying you are too lean at closed loop, then the sensors take over at open loop. It would explain why it runs fine after coming up to temp...

 

If I was running lean in closed loop....... What would cause that?

My check engine light is not on..... Damn it ... I almost wish it was.

Thanks Hammer,

 

Hammer,
this thread sorta goes in conjunction with your thoughts too. I'm going to get an upstream o2 sensor in an hour. I'll let you know how it pans out.

https://dodgeforum.com/forum/2nd-gen...d-start-2.html

 

you won't pop a CEL until the sensors start reporting to the PCM which doesn't happen until open loop, by then your mix is being corrected.

But I agree, a CEL makes it easy.

 

Done!!!!! Thanks again dude!!!


After work on friday i went to the parts store....picked up an upstream O2 sensor. On my way home from the parts store my check engine light came on. With my new O2 sensor in my pocket I pulled over and turned my truck off. I turned my ignition to acc then run then acc then run then acc then run. My odometer went blank and then the code came up P0132.

I looked on my iphone as to what this code ment. Upstream O2 sensor!!!

Went home and swapped them. Runs great now!!!! Thank you very much.

Thanks for teaching me about the closed loop and open loop stuff. I had no idea how that system worked!!!