O Please help!!!!

[03MaCh1nE]

i drve an 03 mach and have the slp x w/cats...it threw out some codes and i bought the mil's...which worked for a while...but now my engine light cam back on....can someone help me with this annoying problem...

 

[stangman]

go get the codes read at advance or somewhere then come back here & tell us what the codes are

 

[Crzyhrse]

Why would you need to buy mils for a catted X? I just got the 02 extensions for my Bassani catted X and that was it.

 

[03MaCh1nE]

Why would you need to buy mils for a catted X? I just got the 02 extensions for my Bassani catted X and that was it.

yea thats what i thought to..but the stock h comes with 2 cats on each side...the x only comes with 1....and its slp...i dont know why that is???

 

[03MaCh1nE]

here is the other piece of solving this horrible puzzle...the code came up as ....p0420 bank #1 cat below limit...so the help is app.

 

[COramprat]

It is common for the high flow cats to throw a code. The O2 sim on the bank 1 side may be bad. Swap the bank 2 with the bank 1 and see if the code swaps sides.

 

[03MaCh1nE]

by saying that u mean to put the passenger side 02 on the drivers side...vice versa???

 

[COramprat]

by saying that u mean to put the passenger side 02 on the drivers side...vice versa???

Sorry if I confused you...the MIL's=O2 simulators. Swap the MIL's and see if the code swaps to the other bank.

 

[03MaCh1nE]

i did this but the code still came up as bank#1 below limit...so now what do i do???

 

[1992 2.3LX]

i did this but the code still came up as bank#1 below limit...so now what do i do???

get a tune

 

[03MaCh1nE]

i dont have the money to do that...what else can i do??

 

[COramprat]

Did you clear the codes? That is the only other thing I could think of besides what I told you in the PM.

If you did then remove the MIL's completely and see what it does then.

 

[1992 2.3LX]

i dont have the money to do that...what else can i do??

save for it and drive with the light on it won't hurt anything.
I have MILs and my light is on because of no cats. The car runs fine i just ignore the light.

 

[COramprat]

save for it and drive with the light on it won't hurt anything.
I have MILs and my light is on because of no cats. The car runs fine i just ignore the light.

But if you have something else throwing a code you wouldn't know it. May be fine on an older car but being an 03 Mach 1 I think he'd rather have everything working properly.

 

[Rickey_Bobby]

MIL's suck. Toss them in the trash and go to any decent ford shop. They can turn off the rear O2's in the stock programing.

Using MIL's is like using tape to hold your SFC's on...

 

[03MaCh1nE]

MIL's suck. Toss them in the trash and go to any decent ford shop. They can turn off the rear O2's in the stock programing.

Using MIL's is like using tape to hold your SFC's on...

do yall know how much that cost??

 

[Rickey_Bobby]

do yall know how much that cost??

Well, it's far from a custom tune, so between free and $400. I would say it's worth whatever a set of MIL's sells for. It really only takes a few minutes. No dyno needed.

If you have cats then leave the rears alone. Also, you said the SLP X pipe only has one cat?!?! ...not really following you on this one....

 

[03MaCh1nE]

Did you clear the codes? That is the only other thing I could think of besides what I told you in the PM.

If you did then remove the MIL's completely and see what it does then.

yes i cleared the codes...the codes dont come back for another week..

 

[03MaCh1nE]

Well, it's far from a custom tune, so between free and $400. I would say it's worth whatever a set of MIL's sells for. It really only takes a few minutes. No dyno needed.

If you have cats then leave the rears alone. Also, you said the SLP X pipe only has one cat?!?! ...not really following you on this one....

sorry if i confused you...lol slp comes with 2...1 cat on each side...lol

 

[Crzyhrse]

I'm still lost as to why you have mils on your X-pipe. Any aftermarket catted midpipe is only gonna have 1 cat per side. If your UN-catted, then you need the mils. Otherwise I would just ditch the mils and just put o2 extensions on and it should run fine. I've never thrown any code with my catted midpipe with just o2 extensions. Does it specifically state with the SLP catted midpipe that you run mils?