Freq valve?: [urq] My multimeter has frequency % duty not dwell - can I check out my d...

[steven j]

Hi Dennis

This relates to me trying to test this used MAC-02 ECU
 I bought.  I figured by testing the dwell (hum - this
is probably the dwell on the frequency valve)  I could
tell if the 02 sensor loop on this unknown ECU works. 
SO I was going to measure dwell with the cars current
ECU which seems to work great - and then plug in the
purchased MAC-02 and see if I can tell if the 02
sensor loop is working at all.  
steve M.
--- DGraber460 at aol.com wrote:

>  
> In a message dated 12/4/2004 9:21:50 AM Mountain
> Standard Time,  
> michellepfeiffersx at yahoo.com writes:
> 
> Also -  the test connector is near one of the strut
> towers?  I watched Gary do  this once.  Hum - I
> think
> he disonnected a temp sensor at the front of  cyl
> head
> also.
> 
> Is this in one of the 1st docs?  DOn't mean to  be
> so
> lazy  research wise but I'm in a time crunch.
> 
> I was going  to buy a meter with dwell - and will 
> if
> necessary.
> 
> 
> steve
> 
> I'm not an electronic whiz-bang, but why do you want
> to check your  "dwell"?
> This is not a breaker point ignition where gap sets
> dwell, so I don't think  
> you can measure it or set it. The timing and other
> ignition specs are handled 
> by  the ECU and read from the hall sender in the
> distributor.
>  
> Or am I all wet? 
> 
> The shock tower connector you refer to is for the
> duty cycle reading, which  
> is set/adjusted by the 3mm allan screw buried in
> between the fuel distributor  
> and the intake igloo. 
> 
>  
> Dennis
> Denver
> 
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