Acceleration Problems?

[aldive]

It I have had my vehicle to 4 mechanics and 3 Ford dealers in the last year and each one of them has had their issues, it is frustrating to say the least. No one wants to deal with a vehicle that has performance mods on over 140k mi on the clock- to much diagnosis for them.
.

Lazz, that makes no sence; diagnostic time is billed to you and is gravy for the mechanic. It can easily be inflated if the owner is not on top of things.

 

[aldive]

Aldive - What's not true? I've had the stock TB and I know have the 4.6 TB. I measured them. They are the exact same where the butterfly is! The 4.6 Has a bigger bore in the front where the tube connects.

What were the actual measurements?

My 4.6 TB is not like that.

 

[Jakee]

What were the actual measurements?

My 4.6 TB is not like that.

if my memory serves me right,
The bigger bore is 2.875 and the smaller one where the butterfly is was 2.559 (65MM)

If yours is different then that means I might possible have something else to do.

 

[aldive]

If yours is different then that means I might possible have something else to do.

Mine is definately different.

 

[NHale623]

It must have been hard to find the area where the IAC valve was not sitting right on the intake mount.

I had it to three of the best dyno shops in my state and none of them found the leak… This was only discovered when I had the intake system smoke tested.

I think you misunderstood the intent of my post. I agree that vacuum leaks can be hard to find. The point I was trying to make was that it doesn’t appear to me that anyone recognized there was a vacuum leak. The tuner who was throwing more fuel at it never stopped to question why he was adding fuel.

I would not call it a vacuum leak that is incorrect. It was a small gap between the IAC and upper intake manifold.

I don’t understand this statement at all. There was a hole in your intake that was allowing unmetered air to enter the combustion chamber. What is the difference between what you found and drilling a hole in your intake manifold? If this isn’t a vacuum leak, what is?

I have had my vehicle to 4 mechanics and 3 Ford dealers in the last year and each one of them has had their issues, it is frustrating to say the least.

Stop shopping the damn thing around. You have seven different people working on your truck, and I’ll bet that not a single one of them knows what the other is doing. You don’t go to seven different doctors when you have a headache, do you?

The best thing for me would be to sell this truck and by a low mile 2002 Sport and start my modifications there.

Mileage doesn’t have crap to do with this. You need to start with something that is running well. If the truck isn’t right to start with, adding modifications is like putting lipstick on a pig.

I don’t know why you undertook this venture in the first place. Why anyone would want a performance modified Explorer in Boston makes absolutely no sense to me at all. Unless you’re trying to race through those tunnels to avoid the next cavein…

 

[aldive]

if my memory serves me right,
The bigger bore is 2.875 and the smaller one where the butterfly is was 2.559 (65MM)

If yours is different then that means I might possible have something else to do.

How did you measure the TB?

 

[Jakee]

How did you measure the TB?

Aldive - I work for a machine shop that makes oilfield equipment. I borrowed an Inside Mic from a friend and measure it. But in all honesly, you could figure this out with a precision scale.

I believe the stock TB will measure 2.559 @ the butterfly bore and 2.625 at the larger bore. A 4.6 TB WILL GIVE YOU A GAIN. But, it's from the larger bore. I know this cuss I've experimented with boring the front part out, testing, boring out some more, testing again, boring out some more, testing. Also, you can half shaft your TB. If you notice the picture I posted, there is NO bary where the screw heads are. This helps as well. Just lock tite the screws and 'ding' the other side to make sure the screws don't back out and damange your engine.

 

[aldive]

A 4.6 TB WILL GIVE YOU A GAIN. But, it's from the larger bore. I know this cuss I've experimented with boring the front part out, testing, boring out some more, testing again, boring out some more, testing.

Given your aversion to a dyno and the drag strip, please explain how you tested? Did you use a flow bench?

 

[Jakee]

Given your aversion to a dyno and the drag strip, please explain how you tested? Did you use a flow bench?

Don't take my word for it. Just don't worry bout it.
It's not for you.

 

[Turdle]

Hey, I don't want to be a stick in the mud--

This conversation is getting way off topic, and is starting to belong back in Jakees buildup thread actually.

Jakee--Aldive is a scientist type---in other words, a data junkie. Nothing at all wrong with this--or your ideas. Some people though, have seen so many expected results go down the drain, with only raw data to support it.

Why don't you get a G-Tech meter? They are pretty accurate--at least it would be a constant in your testing. I would think if it was in error, ( as in .1 second off) it would be constant thru testing. This will show gains (or losses) in good numbers you can use for discussion. Hitting the stopwatch and loud pedal at the same time, just will not do. It might be good for your testing--which is fine--but when you use these kind of test results to support your claims--get ready to be shot down. You must protect your results, and integrity, with data that you prove could not have been skewed.


Lazz, please continue--forget the past. Glad the leak is fixed and you have decided to go another route for tuning.

 

[Jakee]

Hey, I don't want to be a stick in the mud--

This conversation is getting way off topic, and is starting to belong back in Jakees buildup thread actually.

Jakee--Aldive is a scientist type---in other words, a data junkie. Nothing at all wrong with this--or your ideas. Some people though, have seen so many expected results go down the drain, with only raw data to support it.

Why don't you get a G-Tech meter? They are pretty accurate--at least it would be a constant in your testing. I would think if it was in error, ( as in .1 second off) it would be constant thru testing. This will show gains (or losses) in good numbers you can use for discussion. Hitting the stopwatch and loud pedal at the same time, just will not do. It might be good for your testing--which is fine--but when you use these kind of test results to support your claims--get ready to be shot down. You must protect your results, and integrity, with data that you prove could not have been skewed.


Lazz, please continue--forget the past. Glad the leak is fixed and you have decided to go another route for tuning.

Opps, I'm sorry, didn't mean to make anyone upset here. Lazzman - Sorry for the thread hijack.

No, I don't think anyone should listen to me. Sorry, I said anything but the intent was to lead people in the right direction.

I've said from the beginning I would show my end results WHEN the time is right. I'm not trying to make this out longer than it needs to be by no means. It just takes time to get things right where I'm ready and feel comfortable I have things right. Others can prove gains with papers. That's good. I'll do the same at the end. That OR fall flat on my face.

Just trying to answer aldive cuss he seemed curious. Aldive - You are the man.

PS - See the post where I diagnosed Lazzman's problem. I said it would be in the intake somewhere. Imagine that? It was?

 

[Green98XLT]

Al- how can you not have seen that huge darn EGR tube sticking up in the intake behind the TB? Its probably 1/2" round or more and smack in the middle of the air stream. I was thinking of trimming it down some myself.

 

[Jakee]

Al- how can you not have seen that huge darn EGR tube sticking up in the intake behind the TB? Its probably 1/2" round or more and smack in the middle of the air stream. I was thinking of trimming it down some myself.

I trimmed mine all the way off (when I had the upper intake off) with a tubing cutter. What I mean by 'all the way off' is the intake mouth is clear. the tube ends right at the wall of the intake now. I would say that I did feel a performance gain from this and I have yet to feel any adverse affects. It worked for me and did what I thought it was going to do. I just don't know exactly what it did for gas mileage but I would know if it did something horrible. It didn't.

 

[Green98XLT]

I'd say the most it would do is affect the amount of EGR pulled into the air stream. With it sticking up like it does in the air stream it probably has a pretty high siphon effect. By cutting it shorter it probably will slightly lessen the amount of EGR pulled into the air stream but I doubt it would be a significant amount.

 

[Lazzman]

Trucks fixed, end of story, case Closed


Close thread move on with life.

 

[aldive]

Are you not going to dyno?

 

[aldive]

Are you not going to dyno?

Bump

 

[aldive]

bump

 

[aldive]

bump

 

[Jakee]

bump

You wan't him to dyno eh>?