Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
okay i did what you wanted me to do ..i plug in the OTC LIGHT to the + battery then exposed the purple wire from the back of the distributor
i turned on the key to the truck touch the probe to the wire the light came on ..so .the next step is ??? for a GMC SIERRA 94 T.B.I INJECTION NO ELECTRIC TO INJECTORS so thx again lee
You need to start from the beginning for the community and re-title this for year, make and model and add "no injector pulse" in the title as well.
You won't get much help otherwise.
1. What is the complaint
2. When did it start
3. What have you tested
4. What are you missing (spark, fuel pressure, injection pulse)
5. What we talked about on YouTube
6. Why I wanted you to do a bypass test on the distributor reference circuit (purple/white wire)
BTW, the test light should NOT have lit during that test and it is not a purple wire, it is a purple wire with a white tracer.
During that test the injectors should have fired as you touched the test light on an off that wire (key on, test light connected to battery positive and NOT and LED type light, it must be an incandescent)
Ah yes the old "being the computer" trick Paul does a great demonstration in his latest video ! Catch us up to speed on what's going on and we'll help you get it worked out.
Ben wrote: Ah yes the old "being the computer" trick Paul does a great demonstration in his latest video ! Catch us up to speed on what's going on and we'll help you get it worked out.
ScannerDanner wrote: You need to start from the beginning for the community and re-title this for year, make and model and add "no injector pulse" in the title as well.
You won't get much help otherwise.
1. What is the complaint
2. When did it start
3. What have you tested
4. What are you missing (spark, fuel pressure, injection pulse)
5. What we talked about on YouTube
6. Why I wanted you to do a bypass test on the distributor reference circuit (purple/white wire)
Still waiting on this for the community. Don't leave us hang man, you will need us in the future too. Thanks!
T.B.I FUEL INJECTORS NOT GETTING ELECTRIC to work ..okay sunday i replaced the ICM module then this morning i replaced the fuses i thought it was for the injector's & the other one ..2 big fuses 30 amp ....i seen there was a possible a fuse is out ..so well i tried to get a otc..unfortunetly i got the wrong one again it had its own battery & light well so i rigged up something to work i got 12 volt or so to the purple wire with the trace of white .so it did not do anything but when i did it 1st time i heard something for a second then it stop & didnt do it again .i tried a few times .had to run a solid wire inside of the otc but it did not want to work so i got a jumper box so i put the pos power to it that way .
it still runs after putting in the ICM BY gas pour it down the t.b.i so well thanks tell me what is next later lee
lee.henry wrote: T.B.I FUEL INJECTORS NOT GETTING ELECTRIC to work ..okay sunday i replaced the ICM module then this morning i replaced the fuses i thought it was for the injector's & the other one ..2 big fuses 30 amp ....i seen there was a possible a fuse is out ..so well i tried to get a otc..unfortunetly i got the wrong one again it had its own battery & light well so i rigged up something to work i got 12 volt or so to the purple wire with the trace of white .so it did not do anything but when i did it 1st time i heard something for a second then it stop & didnt do it again .i tried a few times .had to run a solid wire inside of the otc but it did not want to work so i got a jumper box so i put the pos power to it that way .
it still runs after putting in the ICM BY gas pour it down the t.b.i so well thanks tell me what is next later lee
I didn't follow this at all. For me to help you further, I need you to focus only on the tests I give you. We will be focusing on fuel delivery since you state is runs with gas being poured into the throttle body (super dangerous by the way)
1. Disconnect one of your fuel injectors, test light connected to ground, crank the engine, touch on the two injector wires individually.
What happens? (tell us what type of test light you are using, Incandescent or LED?)
One wire should be lit constantly and the other will not.
2. Now connect your test light to battery positive and touch on the wire that didn't light in the last test. It should pulse on an off (during cranking). Does it?
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