Help. 94 won't start.

[jbigbootsy]

I'm about to buy a 94 sho. If I can get it running. Car turns over. Has fuel pressure and spark, but won't start. It will start with starting fluid. My question is what would interupt the injector signal. I really wanna buy this car.

 

[deercrusher]

injector signal

will the car stay running once started with starter fluid? It could be a faulty harness - ie broken bad wiring to the injectors - could be the ecu. Have you connected a fuel presssure gauge to the fuel rail to see if the pressure it does have is adequate?

 

[bubba]

I would say it's the fuel pump or a problem getting it to the rail! And don't don't forget the crankbolt also

 

[bigblock]

it sounds like you have no injector pulse. you'll need to pull one of the injector plugs and check to see if your getting pulse. i prefer to use a simple noid light. plug it in and have someone crank the engine. if you have pulse it will flash rapidly, if you dont, nothing. check every plug to be sure. check the ground strap on the back of the intake. check the main harness plugs on the rear bank near the intake. check your under hood fuses. if everything checks out and you still do not have pulse it maybe the ecu or the harness it self.

 

[smokekicsazz]

I would have to agree with the fuel pump being the most likely problem...I just replaced mine this summer. You have a Inertia switch in the trunk of the car left side behind a carpet panel where the tail light is, Make sure THAT it is not tripped, and if so push the button in and start the car, if it is not tripped check for 12VDC coming in to the switch and then check for 12VDC going to the pump. If you have the proper voltage then you can try a temp bypass or permanent one and see if it starts, if not and if you have 12VDC at the output side of the switch then I would go after the fuel pump. It is not a real difficult job, I did mine in 3 hours in a driveway with snapon cordless impact gun to help me with the tank strap bolts after I sprayed them with PB blaster. I am also assuming that you have no active codes. Before I R&Rd my fuel pump I did go through the basics such as checking grounds, fuses, etc. One quick check is to see if you hear the fuel pump "whine" for a quick sec when you turn the key to the on position but don't start. When my pump went I did not have any sound what so ever when I put the key in the on position. And thats what led me to believe my pump was bad and it turned out it was. To further verify the problem on my car, when I dropped the tank before I went after the pump I checked for 12 VDC at the plug. I couldnt check it with the tank in so I went ahead and dropped it and I had good voltage, so that proved right there the pump was bad. I hope that I was some help and didn't confuse you. Good luck...PS if you do a search or look in the HOW TO section there are step by step on how to do the job, there are two ways to do the job...read them and pick the way you want to do it...again good luck!!!!

 

[rubydist]

How long has it been sitting?

The gas could be crap or the injectors plugged (some guys have reported that gas has gone bad and gummed up injectors in as little as 3 months of sitting).

Before I changed the fuel pump, I would check fuel pressure and check for pulses at an injector connector.