3L trouble!!

[posthuman63t]

Well, last night I was driving home from dropping my girl off at her house, and I noticed the exhaust sounding funny. I turned off the music and it sounded almost like the car was misfiring (1amish). This morning I went to start the car up to go to school and it started and the revs quickly died out and the car killed. I tried starting it again and it did, and i even gave it a little gas and it reved up and then died same as last. Pretty much it will start, but then it wont keep running without the gas peddle engaged.

I have checked my vacuum lines to make sure they are all tight...I am about to go and check for leaks as well. Other than that I don't really know what it could be. Possibly the idler control valve? Any suggestions are welcome!

(I also check all my electrical connections and they seem plugged and proper)

2003 3L Taurus
2000 svt LIM and up
On its second tank of gas after swap

[posthuman63t]

I ran a scan and got the codes 0430 and 1000.

Seems as though its a bank 2 o2 sensor and the 1000 I read is nothing to be ocncerned about. It is most likely faulty because of my other code.

Bank 2 o2 sensor...Which one is that? I know my Rear o2's should be off via the prp.

[todras]

Sounds like a bad cat or o2.

[posthuman63t]

Sounds like a bad cat or o2.

Well, I did re-use the o2's that were on my svt. They had about 75K on them. And I only have the 1 main cat that I got w/ my trubendz y-pipe.

Would the bad o2 sensor cause it to not keep running? I figured it would run, just poorly...and it doesnt even want to stay running for more than 2 seconds.

Which o2 is the rear bank? Is that the sensor in the front header or the rear header?

[MapOfTaziFoSho]

I am gettting the same codes. Except I also have like 5 more...I'm gonna run outside and check my codes after I poo...brb

Ok, I had the same issue for a bit. I would start it up and it wouldn't hang enough and it would stall immediatly. I would then start her again and blip the throttle and all would be fine. In my tune I went into the scalars (under idle) and changed the rpm error_from_desired_to_begin_idle_control. "This is used at startup. Once the actualy RPM gets within this amount of desired idle RPM, the PCM will begin controlling idle. It is best to set this value high, like 700-800 on modified cars so that it can correct faster after starting."

Just a thought.

Also my current codes are P0402, P0172, P0430, P1000...I too have my lower o2s off and I am wondering if this is my issue.

Well I was thinking of those codes p0172 and p0402 and those are new...so ya I went out to my car and killed two birds with one stone...my vac line for the EGR was melted. DOH!!

[posthuman63t]

well, I just tried changing the idler scalar and it started like usual, jumped up a little higher in RPM's then started coming down and just kept going and it killed. Tried starting it again and this time giving it a couple small touches on the accelerator, and once i stopped, right back down and killed again.

The damn thing wont stay running! It won't even idle for a few seconds. Just starts and the rpm's come down and KILL.

[MapOfTaziFoSho]

Are you using a TH fix?! Just curious. It sounds like your IAC is bad, but I was under the impression taht you would throw a code for that.

[Tony2005]

[QUOTE=posthuman63t;3330]...Would the bad o2 sensor cause it to not keep running? ....QUOTE]

Yes.

Change the Bank 2 Upper O2 sensor (radiator side).

[posthuman63t]

Are you using a TH fix?! Just curious. It sounds like your IAC is bad, but I was under the impression taht you would throw a code for that.

No, not using the TH fix.

My CEL never even came on for the codes that I do have, and yes, it does work, it lights up with the key in the run position.


Based on the codes I did pull, I think I should just buy a new o2 sensor and see if that fixes my problem.

Does anyone think it could be because of my Lightshow A/F gauge? I've had that installed since I did the swap (and its been on for a tank of gas) ...but it is hooked into that very same sensor that is bad. I did use a larger wire to run from the sensor to the gauge (i think the wires for the sensor are like 16g, and the one I used to run is like 10/12g). I dont think that would trip a code, but if it was somehow interfering...(possibility?)

[MapOfTaziFoSho]

[QUOTE=Tony2005;3379]

...Would the bad o2 sensor cause it to not keep running? ....QUOTE]

Yes.

Change the Bank 2 Upper O2 sensor (radiator side).

Why!? He isn't throwing a code for that! He is throwing the below linked code...

http://www.obd-codes.com/trouble_cod...old-bank-2.php