Fuse are good did computer check got a code p1626
Did you check 5 volt refrence to crank and cam sensors also 1626 should not stop spark still should crank and shut off 1626 is theft signal enabled
P1626 Theft Deterrent Fuel Enable Signal Not Received/ B+ Supply To VCRM A/C Circuit Malfunction.
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Multi-Diag Access J2534
SOURCE: 1988 buick lesabre won't start
they can test your ECM (under the coil pack) at your local parts store
SOURCE: my engine shuts off while im driving
Check ecm for number 1228253. If it has this one in it you will have a cutting off problem. Gm replaced these with #16198264 The cam sensor magnet on the cam gear will deteriorate and give problems. This will require removal of the timing cover.
SOURCE: 1994 buick park avenue . driving home and shut off
how did you jump the fuel pump relay, by bypassing the relay or by applying power to contact that closes the relay? If you bypassed the relay completely you need to b ench test the relay you can do this easily by using any 12v dc power source. If you tested the fuel pump relay by applying power to the relay and the pump run and developed pressure. I suspect a wiring or ground issue. Good luck
SOURCE: 1991 Buick Park Avenue Ultra dies while driving.
It is most likely a sensor. It is common in these. You may check them with an ohmmeter.
You may also test relays the same way.
A vehicle needs gas and spark to run. One of them is not getting to motor. You can check fuel pressure on test port on fuel rail for fuel.
You can pull off a spark plug, plug it back into wire, lay it on top of motor, have someone else crank, while you watch for spark, Put back in, move to next plug wire.
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