Engine stalls and runs rough. Timing chain?

[fun car guy 12]

Ronnie, I think you may be on to something there.  As I said earlier, the car just sat outside for months until the battery was almost totally dead fall and into winter and the humidity could very well have caused corrosion.  Oh joy!

[Ronnie 335]

9 minutes ago, fun car guy said:

Okay, following your instructions, it asked if I wanted the ECM and it simply said there were no codes.  Then, as I said yes to each, it gave the following  ED codes:  ED01 TPS, ED4, coolant TP, ED07OX. sensor, ED08 Deg spark, ED10 Batt volts, ED11 RPM, ED12 gave the word "nothing", ED16 spark angle, ED17 old PA3, ED18 cross CTS, ED19 Int fuel, ED20 BLM fuel, ED21 Air flow, ED22 one AC, ED23 MAT, E98 IGN cycles and ED99 Prom ID.

Trouble codes are automatically displayed as soon as you enter diagnostics. The EDxx you posted are ECM Data readings, not trouble codes. The ECM Data is very handy but it doesn't help much with diagnosing ignition problems. For now just ignore them until you have ruled out the problem as being poor spark or crossed wires. Take it one step at a time.

[fun car guy 12]

As I work on it and become more familiar with the car (including discovering that mice had chewed up the fiber mat under the spare, GRRRR!), I'm getting more comfortable with it.  Drove it out into the sun today and gave it a bath which makes you familiar with every minor scratch and tiny flaw but also amazed at the beautiful paint work done at the factory, 31 yrs. old and the original finish still shines like new, even before waxing! The previous owners really kept it clean, so clean they wore off a good portion of the pinstriping!  

I'm comforted by Dave's comment that the problem of rough running is likely something very simple and I know he's right, it's just human nature to think of the worst first.

[fun car guy 12]

Thanks, I think you've put me on the right path.  When the weather is warm and all this ice and snow is gone, I'll review all your helpful insights and suggestions and dig into the engine, then I'll post my findings.  I feel pretty confident that new plugs and wires, correctly arranged will be the answer.

Thanks to you all for your help and encouragement.

[DAVES89 301]

If mice got into your trunk I would take a look at the wiring harnesses for mice chewing and then look at the vacuum hoses for deteriation. I don't think the spark plug wires are routed wrong [however they could be bad] as they are corroded in place.

 I think your problem is a bad Ignition Control Module and Coil Pack. Most of the time that is where the problem lies which is why I have 3 back ups that are prior tested and ready to go.