Regal stumbling and not shifting

[1of1547]

This morning I took my Regal out. It's a 96 coupe with approx. 67K on it. A couple of miles from the house it started loosing power and stumbling. So I did a U turn and headed home. On the way home I noticed that it would act like it wanted to shift hesitate and not shift, then do it again, and again ,and again. It would finally shifted at approx. 5k. And took forever for it to get there. When I got home I pulled the plug wires off of the coilpacks and noticed the bottom tower on the second and third coil was really corroded badly. I cleaned them up the best I can and took it for another drive. It ran good for the first 1/4-1/2 mile. Then it started the same thing. I'm going to replace the coilpacks and wires. Is this the shifting problem also? Or is the shifting problem the big problem and I found the bad coils in the process? And they are two separate problems?

Thanks

[Schurkey]

Better check the plug wires and spark plugs that connect to those corroded terminals.

 

SES light turned on, on the dash?

[1of1547]

Nope no SES light. thats's what sort of confusing. I thought maybe the TPS. So I backprobed it and then voltages looked fine.

[1of1547]

Any ideas?

[95 vert]

Is it really doggy? And worse the more you throttle it?

If yes, it could be the catalytic converter clogging up.

Possible fuel pump low pressure or regulator leaking also