EECTuning.org

Jack Hidley

It depends on what technique Eric uses to get more airflow through the MAF. If he just increases the pressure across the MAF, then yes, the output voltage will exceed 4.86V and you haven't improved things. However, if he increases the ratio of air flowing through the meter body to the air flowing th...

Jack Hidley

When I built my setup, I just ordered some custom length plug wires from Taylor. It took a couple of weeks. If you want the lengths of the wires, I can get them.

http://home.comcast.net/~jhidley/Coil_bracket_3.jpg
http://home.comcast.net/~jhidley/Coil_bracket_5.jpg

Jack Hidley

Wiring coils that are designed to be driven by 12V, that way (waste spark) is a bad idea. Since they are wired in series, you are only going to get 6V to the primary of each coil. That is going to drop the secondary voltage on the coil that is connected to the firing cylinder quite a bit. Maybe 25% ...

Jack Hidley

Sounds to me like the L and R O2 sensors have been reveresed. Also, have you disconnected power to the EEC for a few minutes? I would do this to make sure that the fuel trims are zeroed.

Jack Hidley

cgrey8, Since your profile says you're an engineer, you probably realize this, but maybe not:) There are two reasons not mentioned so far, that make turbos more efficient than superchargers. 1) The power to drive a supercharger has gone through one more conversion process than in a turbo. 2) Once bl...

Jack Hidley

I would definitely modify your sealevel load scaling vs. rpm function. Increase the max loads by about 40% (6/14.7) and scale everything on the Y axis to compensate. I don't think multiplying your injector battery offsets by 0.45 is valid. Download BE and EA. I think they will have correct starting ...

Jack Hidley

I wasn't trying to imply that the knock sensor put out a DC voltage. Being a microphone, with a very nonflat frequency response, it of course puts out an AC voltage, when an AC pressure is applied to it.

Jack Hidley

Let me clear up a few things. The vibrations that knock sensors pick up is due to the transverse acoustic resonance in the cylinder after detonation occurs. In acoustics terms, this is called a standing wave. The frequency of this resonance is directed related to the diameter of the cylinder and the...

Jack Hidley

Clint,

Then it sounds like BE already does exactly what I was looking for. Since it lets you know that the write/read cycle had a failure, it is any easy thing to just rewrite to the Tweecer.

With Caledit, if the writing process gets corrupted, you never know about it.

Cool!

Jack Hidley

That makes perfect sense. Other systems that I've used that show which cell is active (AEM, TEC-II) only show one cell. They don't illuminate all four cells which are contributing. They just pick the one that has the dominant influence. The AEM system illuminates the active cell along with the X and...

Jack Hidley

I guess this is sort of a BE feature request. Over the past couple of years of using the Tweecer, I've run into this problem where the bin file becomes corrupted. As Clint has pointed out in another thread, there is no error checking in the computer to Tweecer interface. I believe that this causes t...

Jack Hidley

That is what I figured.

Why four cells? I would expect three areas. One being the breakpoint along the y axis, the other being the breakpoint along the x axis and the third being the actual cell that both breakpoints point to.

Jack Hidley

Does anyone know what the Real Time Monitor checkbox on each of the tables in BE does? I search the site and the BE help files and didn't find anything.

Jack Hidley

Chris, This will be easy to fix with the Tweecer. Basically you have one main problem. The EEC is coming up with the incorrect engine load because there are things about the sensors and engine displacement it doesn't know about. Specifically the use of an MAF "calibrated" for 30lbs/hr injectors mean...

Jack Hidley

I'm sure that it will cause some loss in fuel economy, but it's cheaper than replacing u-joints every 100 miles:)

Jack Hidley

Read this thread:

viewtopic.php?t=2538

Jack Hidley

A friend of mine, Nate, solved this problem a while ago. Here is the link to the problem and solution he posted. http://eectuning.org/forums/viewtopic.php?t=5434&highlight= It has always shocked me that Ford wasn't able/willing to solve this problem on the several hundred thousand EEC-IV/V Mustangs ...

Jack Hidley

I can confirm that my first 87LX without cruise control had no VSS sensor. When I did the MAF conversion on it, It took me about a week to deterimine that there was a missing VSS sensor causing the engine to die all the time.

Jack Hidley

The KAM registers in question are listed on page 22-2 of the GFUB strategy.

KAM KAM
Register Address
--------- -------
KAMQA B80 HEX
KAMQB BC9 HEX
KAMQC BF6 HEX

Jack Hidley

This ia related question, so I'm putting it in this thread. I noticed in the GFUB (A9L) strategy guide that they list the 3 memory locations in the KAM that the EEC checks to determine whether the KAM is corrupt or not. Why not just put a function in CalEdit to set these locations to 255 or somethin...

Jack Hidley

Rick, I agree with your analysis of the Dashpot operation. One other thing I noticed in the strategy guide that is sort of dissapointing is this: When the ISC is in Mode 2 it holds the engine at a higher rpm to prevent stalls above a certain vehicle speed. It appears that this speed, set at 7.5mph, ...

Jack Hidley

All of the transmission load type settings are explained in the A9L (GFUB) strategy guide on page 9-5.

Jack Hidley

The timing chain cover came from Late Model Restoration Supply. It is not a Ford part. I think I have seen the same part in the Summit catalog also. It does mount the VRS sensor in the same angular location as the Explorer timing chain cover does.

Jack Hidley

I tried ordering the cam position tool from the Matco link that was earlier in this thread. The tool is actually made by a company called OTC. They are backordered until April 18th. I found a website for a company that has the tool in stock. The link is below. The link also has an application listin...

Jack Hidley

William, The ATI part number in my pictures is a 918924. This is for an internally balanced 302. It is also a lightweight aluminum model. The hub on this damper is completely roationally symmetric. This is no offset weight on it. The 918910 model has the offset weight bolted to the ring on the backs...

Jack Hidley

The book isn't a strategy book. It is "Electronic Engine Controls EEC-IV Training". It is a Ford internal manual for training on EEC-IV systems. I don't know why I didn't think of turning it into a pdf file. I have Adobe Distiller on my work computer. I'll give that a shot tomorrow. I had avoided sa...

Jack Hidley

The photos of the balancer with the 36-1 ring that William posted were shot without the balancer ring itself installed. This makes it easier to see how the ring is mounted. The balancer ring uses 8 bolts to attach to the hub. It is a Fox style balancer. The only clearance issue I had was with the ti...

Jack Hidley

Dale,

Yes, I'll put some scans up in the files area on Yahoo groups. I'll also post some photos of the installations I've done on two different balancers.

Jack Hidley

I've gotten some more information on this subject from a Ford publication "Electronic Engine Controls EEC-IV Training". The book has a whole chapter on ignition systems. It discusses the differences between the low and high data rate DIS systems. I'll scan some pages from this and post them this wee...

Jack Hidley

Skankin,

I just used the trigger wheel that was on the Explorer 5.0 damper. It is just press fit on.

I've got some photos of how I attached my trigger wheel. If you give me an e-mail address, I'll send them to you.

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Re: Injectors not the size they are supposed to be, what effect?

Re: Explorer ECM

Re: Explorer ECM

Question about Real Time Monitor box in BE