RE: [DML] I finally have A/C, but dont think it is working 100%....

["IN2TIME" <Gary@xxxx>]

<SNIP>
When ideling, with A/C on, my car blows cold, BUT the voltage DROPS down
to about 9 volts
</SNIP>

This could be any of a number of problems, but assuming that your
voltmeter is working reasonable well... I would do the following.

Check to see if having the blower on high and putting your high-beams on
makes as big a difference in the displayed voltage as having the A/C on
with the heater fan on low. 

If everything makes the voltage drop significantly, check the battery
and dash grounds for corrosion and tightness. You can also have the
battery and alternator checked out the results can be misleading if
there are other problems.

If the Radiator A/C fans are the biggest problem, check that they rotate
freely. Be careful that they don't come on while checking them. Check
their connections and grounds. 


<SNIP>
My fan kicks on and off every 5 seconds!
</SNIP>

If the A/C compressor clutch is also cycling on and off at the same
rate, this could be marginally OK. You may need slightly more Freon
charge. Cycling every 7 to 10 seconds is considered "normal" for a
DeLorean. 

If the fans are cycling while the A/C compressor clutch is still
engaged, the circuit breaker might be part of the cycling problem, which
leads you back to troubleshooting why the fans are drawing so much
current.

Last week we discussed cleaning up and/or upgrading the relays and
circuit breakers, but you need to find the problems first, not cover
them up.

Gary
www.IN2TIME.com