no start

[KMG9185]

2001 alero with 2.4

ok aint got a scan tool readly availibe...so here is the run down

new crank sensor
new cam sensor
getting spark
NO FUEL
i aint got a fuel pressure tester just as of yet but i can break the line and it seems to have the needed 42psi of fuel pressure...... i have some noid lights for the injectors themself but i am questioning if they work or not...anyone know what kinda of GM injection system these come with....

injector fuse good
fuel pump relay Good....(supplys power to injectors)
so i am thinking this is an electrical problem...
but i also would like to know if the fuel pressure aint high enough would the ecu not turn on the injectors......
(if i spray fuel down in the intake the car will fire so i know it is in time and the cams are turning..... any help would be much appriciated...

kev

[xeroinfinity]

Whens the last time the fuel filter was changed?
If its clogged it wont run.

Other then that, it might be your pcm
If you hav service lights on you'll need to get it snanned to find out whats going on. Usually narrows it down .

[KMG9185]

Originally Posted by xeroinfinity

Whens the last time the fuel filter was changed?
If its clogged it wont run.

Other then that, it might be your pcm
If you hav service lights on you'll need to get it snanned to find out whats going on. Usually narrows it down .

fuel filter is about 5 months old....well i have figured the problem out.... the anti theft system is letting the ecm complete the circuit via ground.....so i am sure it is the key cylinder is at fault with those two wires that measures resistance across the key....... so it thanks that i am tryin to start the car without the key...

Kev

[Mickey#1]

GM's anti-theft system also disables the starter if the module can't get a reading from the key pellet. This makes me wonder if the problem is somwhere else. On the 3800 V6 the fuel injectors are disabled if the throttle is nearly wide open. This 'clear flood mode' can also occur if the throttle position sensor is bad. I don't know if the 2.4 works the same as the 3.8 but thought I'd mention the possibility. Hopefully someone else will know if the 2.4 has the clear flood mode.

[JTrujillo86]

The keys for the Aleros don't have the chip in the key. The problem is the key cylinder. Passlock II on these cars is flaky...

- Jeremy

[xeroinfinity]

sometime when the lockcylinder is bad it throw a SES or SVS.
Hope thats what it is Kev !

Good Luck

[KMG9185]

Originally Posted by xeroinfinity

sometime when the lockcylinder is bad it throw a SES or SVS.
Hope thats what it is Kev !

Good Luck

yeah it was the interlock cylinder..... i took the dash out and unplugged the two wires for the anti-theft...... then i went back thru the re-learn for the keys....... it fixed the problem.....i belive all it needed was a lil stabelant on the conectors...... so far so good....i'll let yall know if i have any other problems.....


Kev

[xeroinfinity]

Originally Posted by KMG9185

yeah it was the interlock cylinder..... i took the dash out and unplugged the two wires for the anti-theft...... then i went back thru the re-learn for the keys....... it fixed the problem.....i belive all it needed was a lil stabelant on the conectors...... so far so good....i'll let yall know if i have any other problems.....


Kev

Great !
Hope that takes care of it.