Guys, i am really at the end of my rope with the truck.

If any of you have been following my threads, you'll know what's going on. I changed 6 out of 8 (that's all that was in stock) coil packs. Truck seems to run better but not right. First was code 153, then came 133. One was for bank 2 , the other bank 1. Now tonight I got both of them!!!!!

What in the hell is causing this. Would a ford scanner be able to pick any of this up??? I'm loosing my mind. I fully underdtand how hallife feels. 8 months out of the year i can drive the thing and it's been sitting here for 2 weeks broke. My bank and insurance companies don't give a rats ***, the bills keep comming. What the hell. I should be getting the other 2 packs tomorrow and i'm gonna change the plugs. Just did the packs for now because it was quick and my plugs are on order. This really sucks. I wish there was a smiley that was banging his head against the wall, cause I would use it.

 

i think you just need to change the front 2 o2 sensors

 

try again..........................

 

tallimeca, have not followed thread but, I agree with cpeapea,, do you have the ability to look at LT fuel trim???

 

my buddy has a predator and i was looking at some stuff the other night. Only problem is i have no idea WTF it is

This is horrible. 2 weeks of wasted time. 500 bucks on a full set of coil packs. New 02 sensors.......

I have 2 coil packs left to change. We are gonna do plugs.

Any possibllity that the 02 extension harness i got from JDM with my headers could be causing my problems????

 

tallimeca, If u want call me in the am @ 617-786-1900, its the shop # I will try to give u some things to watch w/ predator that may help u.. I am also in Ma.



Jon

 

Thanks a bunch. I gotta get this thing on a scanner or an ngs scanner or something. I'll give you a call in the morning

 

dont give him a address.........he cant send a bill without one.

 

Since you've tried all the reasonable stuff, let me propose a theory based on my own experience. A couple months ago, I bought and installed a set of high flow cats. I put 'em on, drove 12 miles and took them off. The change in drivability was profound. I had a new hesitation, a loud burble on deceleration and I suppose I should have given them a real chance by having something like a Predator done, but I could not wait to get them off. Others may love them, but not I.

Now, to your truck. Could it be that the absence of restriction in the cats keeps the O-2 sensors from being as hot as they'd like to be? And since the voltage they output (actually less than 1 volt) now has to go through an extended harness, could that be adding to the problem? If I recall Ohm's law correctly, it only takes one ohm of resistance to stop one volt. One ohm is not much in the world of wiring. But wait, there's more....As you know, headers dump a lot of heat in the engine bay. That might not usually be a problem, but since heat is critical to the 0-2's , both the amount of heat lost in the headers, the pattern of the exhaust flow and the low restriction cats coupled with a harness extension may be a recipe for a problem.

Any easy check might be to have your chip re-done for open loop (temporarily) so it is not dependent on the O-2 sensors and see if the problem goes away.

I hope whatever it is is an easy fix, because both yourself and halflife have sufffered enough. I think I can speak for all the members of the forum in hoping that you both find the cure and let us know what the heck it was!

 

your thoughts are exactly the kind of stuff that is starting to come to mind. The funny thing is though, 2 other local guys that are on these boards that have similar, and 1 has the exact same mods is having no problems what so ever.

 

I don't recall my headers needing any extenders???

 

my o2 connections are right at the block, no way in hell the o2's are going to reach. Maybe you forgot that you already had the extenders on the stock harness.

Here's what i've come up with.....

Headers could be cause fuel to be REAL rich with and without the chip, causing the sensors to not get hot enough to work.

Could be a problem with the extension harnesses.

I'm gonna take a look at a couple things tonight with the predator that someone had recommended.

Off to ford tomorrow.

 

The problem started with the install so why don't you call JDM and asked them to send you out some new 02 sensors / harness to see if that is the issue. Maybe they sent you bad or damaged product by accident.

Feel your pain.

 

Don, yeah the extenders are most certainly required, I think maybe you forgot about em Chris.

As for the extenders being faulty, I suppose a lose wire is possible, Can you borrow a set of one of the local trucks you worked on and try that?

Well good luck and let us know, my guess is it is something simple that a trip to a well equiped shop would find pretty fast.

 

Are your cats removed if so are you rear 02's cut off?

The statement about the front 02's not getting hot enough is a real possibility.

If you replaced the front 02's did you use OEM parts?