240 no start w/ srs/ check engine light
 

This is my first post. I searched the archives and got some info but without success. I started the 93' 245 to pre-heat the morning of the first really cold Georgia morning. I drove .5 mi noticing inability to accelerate smoothly. It would vary RPMs below 20 MPH.
The SRS light stayed on. It started once with the SRS and now check engine lights. It stalled, and then would not even click with the keyturn. All accessories worked i.e. heater/fan, lights and radio.

A month ago I had a computer chip of somekind replaced that controlled the fuel injecors, but did not have the SRS.

Belts have clean contact and the alternator v-belt is snug enough. Battery reads 11.6 V.

I am clueless, anything I can try before having it towed to the dealer?