My 1990 chevy cavalier Z24 wont start. It will fire up for a split second and then stop. Whats wrong with it

Question

I have put in the three coil pack and a ignition module.and a fuel pump. It will fire up for a split second and then quit.

Answer 1

They're all wrong.
Do this , Turn the key on, look at the dash panel ; check if your security light is flashing.
If so shoot me an E-mail for further details.

Answer 2

Ok
#1 check fuel pump pressure.
#2 Check for a spark
#3 Check timing.
#1 Pressure. Find the little valve that looks like the tire valve( also called a shrader valve.
Press in on the valve with a screwdriveer ( Be carful if it sprays a good stream there is pressure, but it still could not be eneff)
Connect a fuel pressure grage and check the pressure.
#2 Checking for spark.
Remove 1 sparkplug wire and put it in a screwdriver and hold it about 1/2 inch from some metal and have someone crank the engine. Is there spark.
#3 Checking timing is a little more involved but it could be it is out of time

Answer 3

I'm not sure how your type of ignition works. In earlier models it would suggest a ballast resister. It is bypassed while cranking and goes through ballast when you back off the start cycle. Because the ballast resistor was shot , the engine dies.Have no idea how your newer ignition works.

Answer 4

Is the coil pack to spark plug wires correct. Mean the firing order? Double check to make sure that you got them ok.

Answer 5

bad computer. after it starts "mechanical" the computer is sending out a signal to kill it . I had the same problem with a 1986 Chevy celebrity. I got a junk yard computer and put it in ,,, ran perfect after that.

Answer 6

sounds like the timing is off. make sure the distributor is set right. soundsl ike a timing thing fer sure

Answer 7

did u try ur idle control valve..did me wonders

Answer 8

Check your fuses.....REALY!