2004 alero Oldsmobile just won't start again ,I replaced fuel filter fuel pump spark plugs and last night it started up but quickly died then started again after leaving key on for while maybe the security passlock is stopping my car from cranking?
Do you have spark at plugs when it will not crank and run ?
SOURCE: 1997 Chev Cavalier hard starting
it sounds like the check valve in the fuel pump is letting the fuel bleed back into the tank
SOURCE: 2002 Saturn Vue won't start
Non-start situations basically boil down to two things: No Fuel, or no spark.
I you are looking to throw a part at it, start with the crank sensor. They are cheap and not too hard to replace.
A full diagnostic approach would be to determine if it was a fuel or a spark problem. Check fuel pressures with a fuel pressure test guage: Low fuel pressure indicates a bad fuel pump or a bad fuel presssure regulator. Lastly on the fuel side, check t see if the injectors are getting a signal to fire, usually done with something called a noid light, I believe.
Spark diagnosis begins with first determining the condition, then finding the cause. Bad coil, loose wires, even the crank sensor are all suspect. A good repair manual with a flow chart is probably the best procedure to follow.
In my case, my manual only had a passing reference to the crank sensor and no diagnostic procedure to test it or even lead me to it. I found the solution through extensive web searches. Once I replaced it, all was well.
SOURCE: 2004 Alero... Cranks but won't start, have to
Yes. pass-lock has roughly a 10 minute timer.
Testimonial: "Thank you! I didn't want to pay an arm and a leg for something non-related like a lot of other people have for the same problem."
SOURCE: 2001 Oldsmobile Alero won't start.
be careful on this problem,this car has a problem on the pas-loc security system,go to www.carcomplaints.com type in 2001 alero wont start.i have this same year our daughter drives.please go and check this sight out .this is not a bad fuel pump. the sec.system is flawed.it thinks the car is being stolen so it is giving a false code which is causing the fuel pump to shut down.this is a problem that gm knew about,if you have a owners man.on this car,look up the pas loc system in it.they tell you how to override it.i hav been dealing with this for years snd may have a fix that will cost nothing..
SOURCE: 2004 Kia Optima no start after timing belt, crank, cam sensor replacement
did you use aftermarket crank sensor? if so that might be your problem. dealer has several different ones, by providing vin number, but there is only one after market for all optimas 01-05. try to connect thick pink wire and thick orange wire together on the ignition failure sensor. you might have the same problem as me. good luck.
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