[Shotimes] Fuel Pump Electronics Question

[Kevin & Cheryl Airth]

Rob:
 You can test the pump from the plug on the fire wall that is used to check
for trouble codes in the computer (PCM). Do you have the Helm manual? They
have a nice little picture of the pin that is shorted to ground. This will
power the fuel pump directly.  Hold the self test connector (ST) with the
long side down. Now take the far right hand terminal and ground it. Turn on
the key and the pump should run continuously. If it still does not run I
would replace it. How many miles on it? I like this guys pumps.
http://www.autoperformanceengineering.com/

 Be aware you may still have a IRCM problem. The fuel pump has a relay so no
fuse. I am currently running an external relay for my fuel pump that
bypasses the IRCM. If you do find this is your problem. I can send you
instructions for adding the external relay. Only have to cut and splice 2
wires and mount a relay. Pretty simple and only about $10 for the relay. You
got the second IRCM used?
.
.


> The other day my 90MTX (126K) started to overheat.  I pulled over and
> checked before it got just scorching hot.  When I raised the hood, I was
hit
> with that fried electronics smell and some smoke from the front of the
> engine bay.  After some a bit of checking, I noticed the fan was locked
up,
> so there was the cause of the overheat.  Let it cool for a while, and
> started to drive it back home.  After 3-4 miles without any A/C, I was
> overheating but the car was running about in the middle of the range.  It
> died.  I was able to restart and continued for another mile, then it died
> again and wouldn't restart.  My first guess was that the short in the fan
> knocked out the IRCM.
>
> I've replaced the fan assembly and the IRCM.  Still no start.  It seems to
> that the car is not getting fuel.  There's no pressure at the Schraeder
> valve on the intake rails.  All the fuses in the fuse box look OK.  The
> inertia switch on the fuel system is still depressed.  When I turn on the
> key, there's no noise like the fuel pump spinning up.
>
> Is there a fusible link I need to check before concluding the fuel pump
was
> knocked out and replacing that?
>
> Thanks for y'all's help.
> Rob
> 90MTX, 126K