Solenoid resistance values vs. 870 Spark Control

[Keith D. Miller]

> -----Original Message-----
> From: owner-gmecm at diy-efi.org 
> [mailto:owner-gmecm at diy-efi.org]On Behalf
> Of Matt Sandine
> Sent: Saturday, May 12, 2001 11:22 PM
> To: gmecm at diy-efi.org
> Subject: Solenoid resistance values vs. 870 Spark Control
> 
> 
> Yep Keith. Unfortunatly I disconnected the sensor too.
> 9.6 volts was on the supply line from the ESC and that
> 9.6 volts was getting to the computer. Ground was spot
> on. Just for fun, after pulling the entire harness from
> the engine compartment and under the dash, I have come
> to one conclusion.
> 
> At first I thought about putting an opamp in the est
> circuuit because it seems to be doing the exact opposite
> of what it should be, but I don't know about the
> hows/whats of that. This makes more sense...
>

Just for the heck of it, but why not try this. Disconnect
the ESC and ground the ECM lead, see what happens. Then tie
it to +12, (might want a dropping/current resistor, my CSM
states 8-10 volts as high) and see what happens.

If nothing changes, I'd suspect a bad ECM (or PROM?).

Keith
--
88 CSC => http://www.users.cloud9.net/~kdmiller/88CSC/
kdmiller at westnet.com
 
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