well,i was drivin home last night goin over a bridge in 4th gear n the car just dies.when i hit the gas it doesnt do anything. so i get the car home later and i think i may ahve no gas so i refill it n it doesnt help any. so im wokrin on it earleir today n it starts but then stops right after. i check the fuel pump n the fuel filter,so im pretty sure its gettin gas. their are no trouble codes,just 12 when i run the daignostic and it has spark. . so anyone got any ideas?

 

Have you put a fuel pressure guage on it? Are the plugs wet when you take them out?

 

the plugs r good,i pulled on n turned it over n i had spark. i dont have a fuel pressure tester,i hafta get one before i can mes w/ it. im really leaning towards the ecm. cause since i got the car like 3 yrs ago once n a while it wouldnt start n then it just would b fine. so i think the ecm finally went out on me, when i run the diagnostic it doesnt sound to good. thanx for replyin chris

 

You say that occasionally it will start? I have a fp guage, if you need that. Also you may want to get a noid tester. That will let you know if your injectors are getting power, which in turn could help you determine if it is truly your ecm.

 

thanx,ill go buy a pressure tester tomorrow , im sure itl be useful. i have the top of the motor off right now,i was just checkin everything under their, when i go to test the fuel pressure,dont i have to have the plenum off, its a 2.8, mpfi, and u cant access the fuel rail w/ the plenum on.. and the wires from the distributor module arent lookin 2 good, they might be bad for all i know. their r so many possible problems,it sux,lol, thanx for the help

 

well i got everything back together. and the car still wont work, it starts for.1 seconds then dies, i think the cold start injector kicks in n thats y it wants 2 start,then the normal injectors arent firing,im not sure,does anyone know if autozone can test ur ecm or anything ?

 

I know they can retrieve the codes, but don't know if they can tell you definitively thats the problem.

Also, check all the fuses especially the one(s) near the radiator and make sure you didn't blow any. Look at them all! That's what mine 89's problems was, although mine wouldn't fire at all. You could have a leaking injector giving a cylinder or two enough fuel to cough over.

GL!

 

Maybe your coil or module is fried. Seems if they were they might spark for a little bit, but then they'd crap out. You could also check for a voltage at the injectors, that might tell you if the injectors are gettting a signal to squirt.

 

thats what im thinking, i checked the module 3 times at autozone n it tested good, but ive heard of them testing ok but not working still. i avhe a wire going from the coil to somewhere on the back of the engine that loox like its in bad shape,so im gonna mess w/ it also. where do i get a noid tester? or do i gotta buy one so i can check if the injectors are getting voltage?

 

I've seen it at autozone in the tools section. It's a little light. Follow this link, they have a decent picture.

http://chevythunder.com/fuel%20injec...20page%20C.htm

Did you check the fuses yet?

 

yeah,i checked all the fuses and everything is good. i took out my ecm to just look at the prom and whatnot,and i autozone doesnt test them unless their in the car,oh well. the prom wasnt burnt out or anything but what do i know about that crap. ill go get that tester tomorrow. the only other thing i can think of is that the ignition control thing that sends the signal to the ecm to fire the injectors is not working. im lost,but im havin fun lookin at all this stuff, i found a wire sensor connector near the tranny though,jsut a single wire,it hasnt been connected since i got the car,i ahve no clue what it is. and i dont get any trouble codes or anything....

 

check your fuel pump relay, i had the same problem with my v6 camaro and it was the relay. sux you live up in phonex or i would give you one i have three or for of them laying around. one of them is new. if that is not the promblem make sure that all your plugs are firing also.

 

well the pumps working,but it kinda sounds weird,so im not sure if the pumps goin bad...

 

Hey, if you want I'll run over with my guage and we'll test that sucker! Say the word or PM me.

 

Sounds like the fuel pump. Mine did the same thing only I was going like 70MPH and the car acted like I shut it off. Then it would start, and die. Try a shot of ether and see if it'll run longer that way. My money is on the fuel pump. Trust me on this, if it is the pump, get a dealer Delco one or a good aftermarket performance one. DO NOT I repeat DO NOT get one at a parts house like Auto Zone or Checker.

 

well, i got a buncha money for my birthday n crap today,so i got the pressure tester n the noid thing, and the injectors fire, but the pressure read zero, even when i cranked it n all taht,so is it the pump or pressure regulator? cause the pump makes a noise,it doesnt sound to good,but i could b wrong.

 

Your pump is bad. Are you going to go in-line or replace the in-tank pump?

 

i dont know,that was gonna be my next wuestion, which is better and easier to replace? if i did inline,wouldnt i have to take the old pump out anyways?

 

I don't know 100%. I've been told that you can do an In-line pump, but maybe someone with more knowledge in another area on the board could say definitevly.

 

oh well,, i just put in a new intank pump. it actually gave my car some *****,it had lil mouse ***** before,now2 i think im at like cat ***** or so,lol,im happy though,its workin,thanx for all the help,i appreciate it.