TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

injector problems. wtf

Old Jun 8, 2011 | 11:07 PM
  #1  
Rs91sam's Avatar
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From: Cabot arkansas
Car: 91 rs 350 swap & pos 93 gmc sonoma
Engine: Lo5
Transmission: 700r4 w/ shift kit
Axle/Gears: Stock
injector problems. wtf

After my swap I got my car started and drove it once. After parking it I couldnd get it to start. I figured out my fuel pump wasn't turning on. I after checking the wires and testing them with a test light and swapping relays I just rewired the whole.thing. I tried.to start.it again and now my injectors arnt coming on. Im thinking its something to do with the ecm but I don't know. Its getting frustrating. Someone help please before I get a garb haha
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Old Jun 9, 2011 | 07:33 PM
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Re: injector problems. wtf

did you check all the fuses. what all did you rewire. check the fuse over by the battery.
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Old Jun 9, 2011 | 07:42 PM
  #3  
Rs91sam's Avatar
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From: Cabot arkansas
Car: 91 rs 350 swap & pos 93 gmc sonoma
Engine: Lo5
Transmission: 700r4 w/ shift kit
Axle/Gears: Stock
Re: injector problems. wtf

I checked every fuse in the fusebox and checked the one by the battery. I even replaced the one by the battery just in case. I rewired the fuel pump only. That wasn't the problem. Im at wits end.
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Old Jun 9, 2011 | 09:27 PM
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Re: injector problems. wtf

do the injectors have a pulse? you sure your getting fuel pressure? could easily be a bad ignition control module or a problem with the VATS system. When you say you rewire it is so easy to tap or cut the wrong wire. I'd double check that.
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Old Jun 9, 2011 | 09:47 PM
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Re: injector problems. wtf

what did you use to rewire the system. most of the fuel pump wires besides one come from orange wire from the battery. one from the oil pressure switch (sensor). but also the orange wires from the battery provide a positive to the ecm. did you cut all those out?
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Old Jun 9, 2011 | 10:18 PM
  #6  
Rs91sam's Avatar
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From: Cabot arkansas
Car: 91 rs 350 swap & pos 93 gmc sonoma
Engine: Lo5
Transmission: 700r4 w/ shift kit
Axle/Gears: Stock
Re: injector problems. wtf

No I just ran a new hot and ground to the pump. I just remembered that when I changed chips in the ecm from a 305 to 350 chip it blew the fuse by the battery and I don't recall it running since.
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