Snowblind

iTrader: (1)

It all started when my radiator started leaking, i replaced it with a new one and had no problem, nothing to remove except the air intake ducting. I put it all back together within an hour only to turn the key and nothing happen, no crank and the fuel pump wouldnt go on. Everything works on the car except the fuel pump electrically. Lights, dash, and solenoid are all in good shape. I have been tracking all the wires to see if one wasnt getting juice to see if that would be causing it not to ground but thats not the case, there are quite a few grounds near the radiator but there all still connected and in good shape, i have no clue what i did to it! So for the past 3 days ive put a new ignition switch in it just because the fuel pump and anti theft for crank wires go off the ignition but to no avail. Then i removed the anti theft feature for the key pellot system under the dash and have ordered a new one. Ive bypassed the feature and it now cranks, but right now as im writing this i just discovered the vacuum operated brake light switch is broken, going to autozone now to get a new one. Could this be it? Guess ill find out, but in case it isnt id REALLY appreciate if anyone would throw there 2cent in on my situation.

Thanks,

Pete

1989GTATransAm

iTrader: (3)

Fuse?

Snowblind

iTrader: (1)

nope, not fuse related, checked the fuses and wires, everything that should be live is live and everything that shouldnt isnt. and all the fuses are good.

Also its a 1988 trans am GTA with all the options, digital dash, manual 5.0.

ANd replacing the brakelight switch didnt do anything. the motor cranks but the injectors arent getting fuel or arent being allowed to to do anything with it, the fuel pump goes on as i start it, stays on for about five seconds after im done trying to start it and then goes off

1989GTATransAm

iTrader: (3)

So the fuel pump does come on. The motor does crank. Are you getting spark? Maybe pull a wire and plug and watch the spark. It's either fuel or fire. Let's eliminate one of them.

Snowblind

iTrader: (1)

Ok this is where it gets shady. I start the engine and it goes on and runs, like anyone does normally as it starts to run you let off the ignition. The second i do this it goes off, but even if i do keep on the starter it runs for maybe 2-3 seconds max and shuts off. So i have spark but its not maintaining spark, the fuel pump im 99.99 sure is running perfectly fine, after the motor stops running the fuel pump stays on for 5 seconds or so like it should and there is no relay or fuse issue there.

Snowblind

iTrader: (1)

im disconnecting the battery and gonna give it a few minutes and try again.

1989GTATransAm

iTrader: (3)

Ok the car will start and run for a few seconds. Do you have anyway to check the fuel pressure? Maybe the fuel filter is clogged.

Snowblind

iTrader: (1)

not sure if its clogged, ill check it in the morning when i start workin on it again. Seems odd if thats the case since it worked before i changed the radiator. But it def wont hurt to check since that could be a probable cause. Im wondering if maybe the ECM is shutting the injectors off for some reason or another. I feel like its something simple thats the problem because how complicated could it get from changing a radiator????

Snowblind

iTrader: (1)

im just brainstorming for the rest of the night, so if anyone has ANY suggestions to a solution for me or anything at all, PLEASE dont hesitate, i need my car back on the road asap.

Thanks!

Pete

1989GTATransAm

iTrader: (3)

Is the wire still on the oil pressure sending unit? I don't think it will start and run if the computer does not see the oil pressure.

Snowblind

iTrader: (1)

Yes its on. my car is an 1988 and it has VATS, but this is supposed to be a 89 option only, Does this mean i might possibly have an 89 wiring setup???

Snowblind

iTrader: (1)

day 6 of this problem. heres to another day of feeling like an idiot, lol. Any more suggestions 89GTA or anyone else? Could use the brain food.

Snowblind

iTrader: (1)

checked the VATS. soldered like it should be in the ignition switch and the security light isnt going on anyway. Bought ALLDATA manual so ima follow all the grounds now.

ephebert

If your security light stays on then the VATS isn't satisfied with the signal being sent.
You have a couple options that i know of. 1 - you key is bad ( should have the resistor in it ) 2- the ignition lock cylinder isn't reading it and sending it to the VATS. 3 - VATS is bad.
You can bypass the VATS system, just search for it in the forums and it will show you how.
Anything coming out of the ALDL? You can jumper A & B pins with a paper clip and read the blinking SES (Service Engine Soon) light. If you do that it will flash the code 12 three times before displaying any other code.

Look at www.aldl.com

Snowblind

iTrader: (1)

i think u misread what i said about the VATS security light, it ISNT going on which is how it should operate when there is nothing wrong with it.

Can the ALDL be used if the car hasnt been running? Or is that why your saying i should use the paperclip to jumper it?