1991 Buick Regal 6 cyl Two Wheel Drive Automatic
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problem: stalls after about 30 min while driving. changed crankshaft sensor, camshaft sensor, modulator, maf sensor, plugs, fuel pump & filter. problem remains unchanged

when it stalls does it jerk violently first then stall? does it start back up?

No jerking, just dies. Restarts like new after 15 seconds. help solve this problem & I'll be happy to send you some "clams". Thanx again, Jim

this is a tricky one to fix on the internet but lets try tap testing the ecm. which engine do you have?

engine is 3800 series--3.8

i woulkd lightly tap on the cranksensor with a long screwdriver and see if you can get it to stall. it is critical they are adjusted correctly. also there are several grounds on a stud under the ignition module, i always remove the ignition module and grind down where it connects and where the grounds connect