need to know what the internal componets of the pcm on my truck are
 

ive been working on my truck agian it still isnt charging right i was wondering if any body knew what is under the fin like things in side the computer :humm:

You didn't say what year, but judging by your Sig, a '92 ~'93 will have the PCM located behind the battery

- Be sure your crankshaft position sensor (at the harmonic damper) is about 0.050" from the damper and be sure it's plug (straight up, close to the radiator hose) is good and secure. :pca1:

fixed the charging problem on my truck it was a dirty cps cleaned it and it worked fine

Sweet. Easy fix then. :rock:

How did you clean it? This has me thinking.....

cps ?

Crankshaft Position Sensor. Post #2 above.

Just spray it and surrounding engine with your favorite cleanser and hose it off. :pca1: