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by i8dirt
Fri Nov 18, 2005 9:05 pm
Forum: Injectors, Fuel & Air Supply
Topic: Problem with Ford IAC
Replies: 9
Views: 933

Hi,

Just incase you already did not do this:

Did you do the PWM modification in step 62 in the assembly manual. http://www.megasquirt.info/ms2/V3assemble.htm

Is Q4 a ZTX450 transistor or did you do the PWM modification with a TIP121.

The original Q4 cannot take the current to drive a PWM, so a ...

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