Run a fule system cleaner through ur car it goe into the gas tanks lol make sure u do it one a full tank if u are able to drive it that much
then when the tank is empty replace your fule filter its on the passenger side of the car mounted on the fram under neith the car..
im thinkin this will solve the problem for sure
the reason u wanna run he cleaner through it first is cause the old fule filter will catch all the nasty **** that hasnt already cloged your fule filter in the first place then u can take it off and pop on a new one.. remember to change your fule filter every 12,000 miles most ppl have never changed the one that was on the car when they bought it.
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whilst i am not familiar with the actual car i would say...
if it cuts out immediately then its electrical...check coil, ignition amplifier etc.
If the car cuts slowly by losing power, spluttering etc it will be fuel related....fuel pump, fuel pump relay, fuel filter.
Does the car restart immediately or do you have to leave it for a while?
what happens just prior to the vehicle shutting down?
Possible that the fault is related to the ignition unit. it will be good to take a code check. Possible that the fuel pump pressure is also checked. This must be done only when the fault occurs, it will be best to check the electrical connections of the ignition unit.
when it is running you need to check fuel pressure your fuel pump may be overheating and shuting down cooling off then restarting if i recal that fuel pump is in the tank or the fuel pump has a bad ground or a power wire with crossion loose ect..... i would look into the fuel pump first
Generally when this happens all the time the fuel pump relay has gone bad. Upon starting any GM car up the fuel pump operates off the third wire on the oil pressure switch. When the oil pressure reaches operating pressure which happens in a few seconds the computer shuts off the current from the oil pressure sending unit and opens the circiut flow to the fuel pump relay. The relay will run ythe fuel pump until you shut the engine off. Replace the fuel pump relay and you shall have a good running car again
If this speratic problem seams to happen most when it's raining or damp, it is a shorting master contol that is to blame. The master control mother board is located on the firewall. Over time, the moisture seal on the cover fails and the motherboard gets damp and meny false signals are sent. This can even happen if the truck is off and key is not in the ignition (this mother board will alwas have power going to it as long as the battery is connected). A cheap way to check this is to remove the cover, put a plastic grocery bag over the mother board and use an small elastic band to close the open end, allow the wires connected to the mother board to go out the open end. If this solves the problem, replace the seals on the master control cover. Care should be taken as if there is ANY corrossion on the mother board, it will need to be replaced.