eviltwin_1987

iTrader: (18)

will i finally started the nova. mail order tune from wait4me. it started right up and ran for about 3min and shut off. now i have no spark. any idea on whats going on? thanks

ls1nova71

iTrader: (4)

When you say "shut off", do you mean it quit running all by it's self, or you turned it off and now it won't start? Anyway, start with the easy stuff, check all of your fuses.

eviltwin_1987

iTrader: (18)

all fuses and relays are good. it shut off by its self. no spark or fuel. has power to everything. Any ideas? thanks

Old Geezer

iTrader: (3)

No rpm signal to the pcm??

ls1nova71

iTrader: (4)

When you say "no fuel" do you mean no injector pulse, or no fuel pressure? Does the pump come on when you turn the key on? Do you have any kind of scanner?

ssduane

iTrader: (3)

I had a pin pop out my PCM plug so it was seated in the PCM when I was installing my setup, maybe check that?

eviltwin_1987

iTrader: (18)

there is no injector pulse. there is power it to the injectors but the ecm is not grounding them.

i will check that.

it was so weird because it was running fine and then just shut off. after that there was nothing. i didnt touch a thing between it running and then not starting.

eviltwin_1987

iTrader: (18)

the only codes it is throwing is from being in speed density(MAF stuff). is there a way to use a scanner to check the cam position sensor and the crank position sensor to make sure there reading? thanks

eviltwin_1987

iTrader: (18)

P0107 Is now being thrown. there will be a scanner hooked up on wednesday. what should i be looking for? thanks

eviltwin_1987

iTrader: (18)

bump....anyone

eviltwin_1987

iTrader: (18)

still have no spark/fuel. anyone? the only code is for the map sensor but that isnt needed to get spark.

ls1nova71

iTrader: (4)

You didn't say, but does the fuel pump prime when the key is turned on? And are you absolutely sure you have power to the injectors and the coils? Where are you grounding your volt meter when checking for power? Have you checked and double checked to make sure the grounds are hooked up (usually at the rear of the head) and that they are tight, good grounds?

This HAS to be something simple, since you said it was running.

eviltwin_1987

iTrader: (18)

ok. i checked all the grounds. pulled the harness out and checked every wire to make sure it was good and in the right pin. still nothing. there is no tach out put.
here is a run down of everything
self made harness, no oil pressure connector, speed density tune so no maf and there is no IAT sensor hooked up. All the injectors and coils have power.

there is no spark and no injector pulse. it ran before for 5 min and shut its self off and has been like this ever since.

psiconversion

iTrader: (5)

I hate saying this, but if the PCM is not grounding the injectors, maybe it is the PCM?

psiconversion

iTrader: (5)

One other thing? How did you bypass the vats? Did you turn it off in the PCM or put a signal generator on it?

eviltwin_1987

iTrader: (18)

vats is removed from the ecm

ls1nova71

iTrader: (4)

If you checked every wire and thery're all good, and it's not an internal engine problem, then it almost has to be in the tune. Who tuned it? Maybe you should talk to them and see if they have any input.

can'tfindausername

iTrader: (2)

My mustang did this, though I'm not sure if it's going to cure your issue. My car was idling, and acted like it ran out of gas. I put gas in it, and it still wouldn't fire. Fuel pump wasn't working. Ran a direct power to it and tried to start it. Fuel pump came on but had no injector pulse. My pcm wasn't grounding the injectors. I had power to the injectors. I eventually found that the pcm wasn't sufficiently grounded, though I had all my grounds hooked up. I ran a ground to the case of the pcm and boom, fired right up. I'm not sure why, but I didn't have sufficient ground. Try a quick ground to the case of the pcm before you throw it in the trash.

Hope this helps

wytry

iTrader: (6)

I dunno if you ever got the scanner you said you were going to....but a bad Coolant Temp Sensor and Crank Position Sensor killed my car while it was running, then wouldn't allow it to start after. About 80$ worth of sensors.