2002 saturn sl2 twin cam. car wouldn't start intermitally . couldn't hear fuel pump humming so i replaced w?new one.It ran good for two days then problem came back. Pulled pump out and it works fine, the fuse is good, and the relay works. jumpered the relay and pump works. relay not receiving power to energize. also the gauge has stopped working. starter turns over fine. could it be the ignition switch?
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first need to make sure you have enough fuel pressure. Hook up a tester and check against the specs. if its too low, then your probably looking at a fuel pump. By replacing the filter, you allowed more fuel to flow. Also, make sure you are getting spark and injector pulse.
i have the same prblm 140k. i changd plugs, pvc, fuel fltr.. the problm is in the ******. i will chng atf and filter. if this does not solve prblm, it might be ****** valve body. ****** work $$$$$$$. i'm going to run it till it won't move no more than scrap it. i rpl ****** 3 yrs ago $800 (used ******).
Alot of the time the anti theft security can actually disable your starter. Check to see if there is a light on the dash that says SECURITY or a little picture of a car with a lock thru it. This would be a dead give away of the security problem. Check out this link for info and DO IT YOURSELF solutions to this problem.
This is probably a faulty fuel pressure regulator. You can rent a tool at most auto part stores that connects to the fuel rail to show you the pressure level. If it is low (less than @40 PSI) or if it fluctuates very much, replace the regulator. It is also a good idea to replace the fuel filter, as it can clog and prevent adequate fuel supply from reaching the engine. You may want to replace the filter first, as it is usually cheaper.
sounds like the fuel pump has gone out on it. To test your fuel pump have someone turn the key on, but do not start, and listen for a humming sound by the gas tank. It will only last a second or two. If you hear nothing then your pump is bad and will require removing the gas tank. If you do hear it try replacing the fuel filter and see if that helps.
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