quick IAC question

ASHTEK

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Mar 31, 2005

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Dec 20, 2006

#1

• Dec 20, 2006

• #1

I am putting together a megasquirt, and I need a definative answer as to which type of IAC valve these cars use before I can move on, I want to say it is a PWM Idle Valve, But I am unsure. Any clarification on this would be greatly appreciated.
thanx

 

final5-0

Mustang Master

Apr 6, 2003

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DFW Texas

Dec 20, 2006

#2

• Dec 20, 2006

• #2

ASHTEK said:

I am putting together a megasquirt, and I need a definative answer as to which type of IAC valve these cars use before I can move on, I want to say it is a PWM Idle Valve, But I am unsure. Any clarification on this would be greatly appreciated.
thanx

Click to expand...

I got no clue

You are the first person I've seen on any of these boards even bring up this issue.

I think most here would like to see how that Megasquirt works out for you

How about an update when you have something to report

Grady

 

final5-0

Mustang Master

Apr 6, 2003

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Dec 20, 2006

#3

• Dec 20, 2006

• #3

I just saw in your sig you have a Tweecer

Whats the deal

Bad experience
Feel the Megasquirt will be better

Waz UP!

Grady

 

ASHTEK

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Mar 31, 2005

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#4

• Dec 20, 2006

• #4

Ive been toying with the tweecer for 7 months now and still I cant get it to do right, I dunno if it just too much motor for the stock eec or Im not doing something right, but I do know that the motor runs great with a carb, but I'm tryin to stick with fuel injection on a wager, but my best results with the tweecer come from a modified 95 cobra r tune on a W4HO eec

 

94gsl5.0

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Sep 7, 2004

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seatown

Dec 20, 2006

#5

• Dec 20, 2006

• #5

I know that i have that info on my laptop at home (its in my cal file). If no one gets you an answer by then i can post up. (I wanna lean towards you being correct on the PWM, though)

 

94gsl5.0

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Dec 20, 2006

#6

• Dec 20, 2006

• #6

Also, you can count how many wires go to your IAC...

USUALLY 2 wires = PWM and 4 wires = stepper motor.

 

final5-0

Mustang Master

Apr 6, 2003

6,817

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79

DFW Texas

Dec 20, 2006

#7

• Dec 20, 2006

• #7

94gsl5.0 said:

I know that i have that info on my laptop at home (its in my cal file). If no one gets you an answer by then i can post up. (I wanna lean towards you being correct on the PWM, though)

Click to expand...

I'll be interested to see what you come up with for an answer

I looked at every ISC Scalar I could find in CalEdit and found nothing

Grady

 

ASHTEK

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Mar 31, 2005

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Dec 20, 2006

#8

• Dec 20, 2006

• #8

There is indeed two wires

 

94gsl5.0

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#9

• Dec 20, 2006

• #9

Yup just checked my cal file as well as # of wires.... it is a PWM not a stepper motor.

Reading up on a bit in my tuning guides... Our (Ford 5.0) system is a PWM... which means The ECU regulates idle air through the means of a duty cycle control solonoid.

From my understanding the 4 wire version uses 4 coils with which to move a magnetic rotor valve to adjust idle.

 

94gsl5.0

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#10

• Dec 20, 2006

• #10

double post... stupid internet.

But while i am here... Grady, i am using an AEM ecu and i don't know where you would find this info using a tweecer. Sorry i can't help there.

 

ASHTEK

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Mar 31, 2005

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Dec 20, 2006

#11

• Dec 20, 2006

• #11

Thanx for the help, there doesnt really seem to be much on that sort of information floatin about, I guess its not needed very often. I do plan doing a write-up of my assembly/install/tuning experiences with the megasquirt when I finish it. I know that first of all it really is not a "complete kit" as it does not come with the proper transistor and diode for a PWM idle valve, other than that it seems to be going together quite nicely plus there will be no maf which I am sort of leaning to being a plus.

 

94gsl5.0

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#12

• Dec 20, 2006

• #12

Very nice... My roomate is running his new swapped 16 valve 2.0 VW rally car on the squirt.

Once you go MAP you don't go back lol.

Out of curiosity which squirt version are you using... I looked at it but in the end went with something with more resolution (cell count) cause of boost.

 

ASHTEK

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Dec 21, 2006

#13

• Dec 21, 2006

• #13

I am using a ms 2 v.3 I beleive the cell count 12x12 on these

 

94gsl5.0

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Dec 22, 2006

#14

• Dec 22, 2006

• #14

cool.

I thought that there was 16 by 16 coming out?

12 by 12 is good but i found that i wanted a little more fine tuning of both on boost and off boost requiring a larger map. Currently tuning on a 21 by 17.