Hi, I need a little help, I had a dead battery, after i replaced it my car wont start. I have recently replaced the ign con module/ distributor and rotor plug wires and plugs, It doesnt seem to be getting any fuel. any help would be greatly appreciated. Thanks

 

Does it crank and not start, or does it not crank at all? Need to know that first.

 

it cranks it originally happened tuesday night, it tried to fire when jumping it one time, then after that would not fire. I replaced the battery this afternoon with no luck, I also replaced the ign control module today and checked for spark while turning...spark was present. Tomorrow I am planning on priming it and seeing if it fires to see if maybe the fuel pump relay is bad, or fuel pump. Just wanted some more expert input before I start just changing parts. thanks

 

Slow down a bit before you create a lot of grief for yourself.

First check to make sure that when you replaced all the wires you put them back in the correct firing order.
Your sure that you installed the coil correctly,rotor and put the cap back on?
Do you have the connections to the coil correct? they are pushed in and making good contact.

When you turn the key to the on position do you hear the fuel pump turn on? You should here it for a couple of seconds.

When I did mine the first time I knock the wire connector off the fuel pump relay and it wouldn't start. I thought I had all kinds of fuel problems then found that.

Maybe you knock the wire connector off the oil sender?

These are all easy things to check before you start thinking that you got these major problems.
Good luck.

 

Lost daylight before I could check the connections to the relay, Dist. and connections are all good, and I didnt remove the plug wires to replace the ign control. just leaned it forward to remove the rotor. Oil sender wires were all connected. I will check the relay tomorrow, I dont hear the fuel pump when I turn the key on. Thanks for the input

 

GM gave you a built in way to test the pump. Run 12V to terminal G on the ALDL connector under the dash....directly from the battery....and tell me if you hear the pump run then. If no, either the pump is dead or there is an open circuit in the fuel pump wiring. Check for 12V at the fuel pump harness with Terminal G energized if the pump doesn't run. If yes, the pump has died. If no, start tracing where you lose power. Incidentally, have you checked the fuel pump fuse?

If you hear the pump running when you run 12V to terminal G, then you need to test the pressure...which, by the way, takes some effort on an 84. You will need a low pressure (0-15 psi) gauge. You can run a T fitting (clamped) on the pressure line right past the fuel filter and attach the gauge there. You should have between 9-13 psi or the car won't run.

And if terminal G causes it to run, but key on and cranking past 4 psi doesn't....test both the relay and oil pressure switch on the one in a million shot both have failed. If they check out, time to trace some circuitry.

Won't make a lick of difference, and certainly won't cause a no-start condition. The oil pressure switch acts as a backup to the relay. Should the relay fail, it will energize the pump when pressure reaches approx 4 psi during cranking. If the relay is functional, the oil pressure switch never comes into play. Both the relay and the oil pressure switch would have to be bad or disabled for this to happen, which is very unlikely. And the terminal G test will rule that out anyway.

I've said this a million times, so one more won't hurt....TROUBLESHOOT, DON'T GUESS.....and don't throw parts and money at a problem to fix it unless you are independently wealthy and have all the time in the world...which I'm betting you don't

 

 

I didnt know about the terminal g connector test I will try that in the morning, I doubt seriously both the ops and the relay failed, but im afraid I may have smoked the relay somehow when trying to jump the battery tuesday night. I have said if this car dont cost me 300 dollars a month I would be rich. I dont mind working on it, Just hate having to do it in the cold. God what i wouldnt give to have a garage to put it in. Thanks for your help, I will keep you posted what I find tomorrow.

 

also I couldnt locate a fuse for the fuel pump, just for the injectors. I couldnt find a guide for the fuses and thier placement in the fuse box, but I didnt see one that said fp or fuel pump.

 

On the fuse panel on the right side of the dash, it's on the bottom row, second from the right....10 amp, labeled F.P. I doubt that you damaged a relay jump starting the car.

 

Not getting a clear picture of the symptoms here but if the Cold Start Module has gone bad on a Crossfire car , it will not run well if at all until warm .

 

I kind of doubted it too, but you never know I may have knocked the plug loose or something trying to jump it in the dark, hard to tell. I will check the fuse today, and the relay, hopefully that will solve the problem. Thanks again for all your help.

 

In a nutshell...dead battery, replaced, still no start, turns has spark, but as far as I can tell no fuel. Trying to get some ideas on where to start to find the problem. I dont fancy just throwing parts and money at it and a ton of work if the problem could be something simple. untill the dead battery I didnt have any running issues at all.

 

OK im stumped, relay isnt energizing, I got fuel when I jumped it, but still didnt fire I do have spark I found a pinched wire from the ign control module, but it seems to have been that way for a long time. all the wires and connectors are in tact. what i wouldnt give for an expert on corvettes to live nearby.

 

OK, when you say "got fuel when I jumped it" what exactly do you mean? Did you visually see the injectors spraying? By "jumped it" do you mean running 12v to terminal G?

OK, if the relay isn't energizing, do you have 12 volts at the relay at key on? The ECM should energize the relay for 2 seconds at key on, and then voltage should drop to 0 unless the car is being cranked.

Need to know this stuff before we can go further.

If you weren't 1800 miles away we'd have it running in an afternoon....would cost you a pizza and 2 six packs of Fat Tire. Keep the car long enough and do your own wrenching and you will be that expert at some point.

 

12v to terminal g I actually saw 3 injections of fuel fire into the throttle bodies, I then heard the relay rattle like it didnt know what it wanted to do.. I tried to crank it but it still didnt fire i removed the jumper wire the rattle stopped, replaced it saw the fuel again, then rattle started again. I dont have a multimeter to test for voltage with the key on..kinda hard to to do some tests without the right tools and dude I would cook ya a steak if we could get this running. thanks

 

Did you see the injectors spray as you were cranking it, or did they spray without the engine turning over? You shouldn't get any fuel spray unless the engine is cranking or running.

Pick up a cheap fuel pressure gauge and run a T from the pressure line to the gauge (remember to clamp it), energize terminal G, and tell me what you see on the gauge.

 

OK problem solved, weak fuel pump, and fried fuseable link, cars running whizz bang now....just in time for crappy weather, story of my life. time to get the annual winter beater so I can save money for the paint/body work I want to have done in the spring...thanks for the help and ideas