93 Camaro Z28 (5.7) RPM Problems?

Question

My cat-converter caused a small fire underneath and I had to change the speed sensor, the wires for it, and the shifter cable. (Of course the cat was replaced) But now when I start the car the RPM's goe crazy and I pull a code 36 (OBD 1). The RPM starts at appx. 700, but while in idel they just jump all over and eventually get to 3000, then the check engine light comes on. Now my car will only start half the time. Is there something I'm missing, electricaly, that could have been ruined by the fire from uderneath to cause the RPM problem. The fire was near the transmission and up near the starter, Y-Pipe and passenger side headers........A month back I changed the distributor, put an MSD Ignition coil in there, new ignition module, and checked all plugs for spark so I know its nothing to do with that.......PLEASE HELP!!!!!!!!

Answer 1

code 36 indicates a loss of the 24x signal. Usually this is caused by a faulty ignition module, but in your case, since you already changed it, I suspect that the battery ground cable to your engine is at fault. The engine starter will ground itself thru the exhaust pipe, trans and any other higher resistance path available, but the weaker 24x signal will be used to ground the ign. module thru the dash board instruments. Remove all ground points and clean, repair or replace as necessary.

Answer 2

Tony couldn't have stated it extra valuable. I stress a ninety 4 Z/28 Camaro 6-% Convertible interior the summer time and the vehicle handles a useless ringer for a intense performance Corvette. the purely ingredient I did to it at the same time as a offered the vehicle became to positioned on wider tires, more effective anti-sway bars the front & back, and racing struts each and each of ways round. So i'm really extremely joyful with it, even even with the reality that i do not race or abuse the vehicle.