Please tell me, you mean 600 rpm's..............

 

dont know if anyone has answered with this yet, too tired to read through atm lol

Had basically the same smell coming from a 01 Xtreme i own, Turned out it was 2 things, The O2 sensor was garbage, and the cat was nearly plugged solid, changed them both and it ran good as new

 

Sorry. I did mean 600 rpm. If and when I get this running smooth and also want to change out the cats will I need to do anything to the back O2 sensors if I replace the current 4 cat system with hi flow cats? I did see what they called a gotts O2 mod by placing a couple of NF's in between the O2 sensor and the pipe with one of the non fouler drilled out 1/2 inch.

 

Nope, the O2 sensors behind the cats only tell the ECM that you have working cats. It does not control the fuel mixture or engine in any way. The front O2 sensors do that.

 

Put 2 high flows in and replace front O2 sensors. As long as rear sensors are not creating codes keep them and save some money. Rear sensors are for MIL (Check engine light) only and do not affect performance.

 

Hey guys - Ok tell me if I did not read this correctly. My 04 FX4 Screw gets the engine washed almost everytime I wash the truck. Its got 106,500 miles on it and the wash has never caused me any trouble, plus I do the same to the wifes Acura.

 

That's nuts! Can you drive her under water as well ? Water and Electronics never mix.

You can do it if cover certain area's up, but if you don't - One of these times it's going to bite you in the *** lol - it's comin.

Each wash - your filling the plug chambers up with water. You should play the Lotto, - your lucky as hell!

I just blow the motor off with air - much safer

 

Ok jbrew. I am going to pick up a fuel filter, remove all the COPS and grease with the dielectric grease as I should have done the first time and put them back in place. Do you have any idea why the truck runs perfect when I first start it but after it warms up starts to skip a beat??

 

arogers.
I power washed my engine twice. The first time the engine missed very little and went away after a day.
The second time I washed it the engine would miss and it never went away until I replaced the COP's. I did not try to hit the top of the engine while washer under the hood but apparently this was the problem.
The issue I am having now is not from power washing, I learned that will not work on this truck last year.

 

Well dang! Yeah I pop the top, spray over it once or twice with the power washer, she looks clean and have done so since I bought her in January 04. I do the exact same thing to the wife's Acura and my son does it to his Mustang GT. I just liked the fact that the engine looks new, where is some wood? I might need it. BTW - Love the site, I should have been here a long time ago.

 

Well, it's not perfect - it's out. 600 rpms is wrong - somethings up there as well. What is your cold start rpms when she idles down the first time after start?

What is your warm rpms?

Is there a difference? How much?

Your Rpms should be between 700 - 750. I believe 730 is perfect - No problems.
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I wouldn't touch the coils yet - there's no reason to. Fuel system first - get that out of the way. You have to know that this system is okay FIRST. Otherwise you could be making allot more work for yourself.

Test pressures and regulator. You need a service manual and a fuel pressure tester. Auto Zone has a FREE loner program - use it if you need to

Yea, don't take anything apart yet. You might want to purchase a cheap scan tool - about $65.

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Yea, I don't know what's going on with your truck. Tending to think the computers a little buggy right now, given the weight or number of things not right. Like I said before, it really needs to be gone thru. - All systems. That's not difficult to do yourself.

If it's a one or two part fix , I'll be really surprised.

I might write the old codes down and reboot the PCM. Just because this could produce another DTC after reset. This might help in determining. You don't have to drive it, just disconnect that battery for a 1/2 hour or so and restart. Once started , leave it alone for about 8 - 10 minutes and scan. Scan even with no CEL present. BUT!!! You need a scanner, a cheap one will work. An iphone will work as well if you have one along with the program.

 

No lol. But they all do that, just so you know. They give you a false impresion - "it's fixed"!! Then go to hell soon after if it's not. I'm not sure why, but they do that.

 

Ok. This is good and bad.
I pulled the cop on the drivers side closest to the front of the truck, it had white slime all over the rubber boat and in the hole to the point of almost covering the plug. i pulled the cop on the passenger side furthest to the front of the truck and it was dry. I then pulled the second Cop back on the driver side and it had some slime but it was not white but more of a brown color????? Where the hell did all the slim come from? It looks like the coolant line runs next to the first cop I pulled but I am not low on coolant and I see no evidence that there is a leak.
I am going to pull all of them and grease em up to see what else I find. By that time this junk hughes dish internet might load the next page.

 

- It's not slow is it ? What is that -"Dial up" or something ? lol.

Sounds like you need intake gaskets.

Firewall

Front of truck

The water jackets are between #1 and #5. These modulars have a problem with them, -specially the 5fours. They go bad right there. Your not losing a bunch of coolant, just a little here and there. A little leaches out and travels down the top of the head and dumps into the plug chambers. That's the only explanation I can think of.

The gaskets go bad right here. Sometimes the heads even pit. My 98 did this, the intake itself pitted up as well - had to fill the pits w/aluminum filler. -

 

I circled #5 plug chamber and drivers side water jacket -



Yea, that happens on both sides equally - sounds funny, but it does. Can you see how the coolant can travel along the head? That's what happens eventually when they get real bad. Fills all the chambers.

I've changed mine a few times. If you do, let me know. I'll find yuh the right gaskets. It's a PITA because Ford changed dowl locations on those heads allot.