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midnight60
Novice
Jan 14, 2008, 7:48 PM
Post #1 of 9
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NO Fuel from Injector
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HI ALL,
New to this forum and need help bad. I have a 91 GMC
Sonoma that will not start. I know it was fuel related
so I changed the fuel pump. The pump is working good
I can not get any fuel from the TBI injector. I replaced
the TBI and still no fuel. Can someone tell me what
to check or what maybe the problem. I seem to think
it maybe electrial. Any help will be greatly appreciated.
TIA.  Yes the vehicle runs if you put gas in the TBI.
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dave284
Enthusiast
/ Moderator
Jan 14, 2008, 9:27 PM
Post #2 of 9
(1396 views)
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Re: NO Fuel from Injector
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I had a vehicle that done the same thing, after replacing sensor here and a sensor there, it was the engine computer. On the other hand a crank sensor maybe?
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midnight60
Novice
Jan 15, 2008, 6:50 AM
Post #3 of 9
(1395 views)
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Re: NO Fuel from Injector
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Thanks for the reply. I replaced the computer and nothing
changed. I am going to get a wiring digram and trace the
voltage down. Thanks again and have a blessed day!
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dave284
Enthusiast
/ Moderator
Jan 15, 2008, 8:11 AM
Post #4 of 9
(1391 views)
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Re: NO Fuel from Injector
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When you find the cause of this problem please let me know, so we can help others. I'm sorry I couldn't help you much, but a circut diagram is a great start.
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midnight60
Novice
Jan 15, 2008, 8:27 AM
Post #5 of 9
(1389 views)
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Re: NO Fuel from Injector
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I will let you know when I find the problem. Will also post my finding, hopefully to help others. have a nice day!
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way2old
Veteran
/ Moderator
Jan 15, 2008, 10:28 AM
Post #6 of 9
(1385 views)
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Re: NO Fuel from Injector
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If you are sure ther fuel is getting to injectors, check the fuses labeled ECM A or ECM 1 and ECM B or ECM 2. These control the injectors.
Being way2old is why I need help from younger minds
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midnight60
Novice
Jan 24, 2008, 10:20 AM
Post #7 of 9
(1356 views)
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Re: NO Fuel from Injector
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ALL,
Thanks for the reply. I found the problem. It was a bad hall Effect Switch located in the distributor. The switch sends a pulse to the injector allowing fuel to flow. Pulling the distributor out make it easier to replace. Hope this helps others. Have a wonderful day!
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way2old
Veteran
/ Moderator
Jan 24, 2008, 4:43 PM
Post #8 of 9
(1350 views)
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Re: NO Fuel from Injector
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Great job. Please post back if it is a definate fix. Thanks for the follow up.
Being way2old is why I need help from younger minds
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midnight60
Novice
Jan 24, 2008, 5:50 PM
Post #9 of 9
(1349 views)
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Re: NO Fuel from Injector
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Thanks for the reply.
Replacing the Hall Effect Switch fixed the problem . Vehicle
been running great for three days now. Have a wonderful day!
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