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re- 1992 buick efi problem
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Anonymous Poster
Mar 25, 2008, 2:26 AM
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re- 1992 buick efi problem
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kinda got confused on the last instructions, not sure if i was to test the voltage at the injector or some place else. anyway no voltage at the injector with the starter cranking.(checked it with the connector off the injector. like i said earlier, no gas, good fuel psi at rail. new crank sensor new ecm, and no clue what to do. thanks for your comments
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Anonymous Poster
dan
Mar 25, 2008, 2:34 AM
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Re: re- 1992 buick efi problem
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sorry dan was not sinking in that you wanted me to check the tps. could you explain where to find it and how to test it again. must be the problem i believe i have checked everything else.
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DanD
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Mar 25, 2008, 4:12 AM
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Re: re- 1992 buick efi problem
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There should be power on the pink/black wire of the injectors anytime that the ignition switch is on.
Have you checked the Inj/coil fuse in the under dash fuse panel? Test the fuse with a regular 12 volt test light.
As for testing the TPS; lets first get power to the injector circuit.
Dan
The quality of the diagram is poor but I think you should be able to make it out?
Canadian "EH"
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Anonymous Poster
Mar 25, 2008, 11:20 AM
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Re: re- 1992 buick efi problem
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yes we have 12 volts at the fuse box. with the key on black to black and red to blue wire i have .02volts. black to black and gray to red i have 5volts... this means what with no signal at the injectors? dan i just want to thank you for your responses and your knowledge. awsome help.
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Anonymous Poster
Mar 26, 2008, 10:39 AM
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Re: re- 1992 buick efi problem
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dan,
yes, both wires make the light come on. pink and blue
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DanD
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Mar 26, 2008, 2:19 PM
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Do you mean that you can connect a 12 volt test light to the blue wires that I have circled in blue in the wiring diagram below and the test light lights?
Dan.
Canadian "EH"
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Anonymous Poster
Mar 26, 2008, 8:14 PM
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yes, i only tested the forward bank of injectors and both the blue and the pink lit the 12 volt test light. i also tested the tps harness with a volt meter and there is power on tow of the leads. as for the tps sensor it changes resistance when the throttle linkage moves.
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DanD
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Mar 27, 2008, 3:59 AM
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I know that this is going to sound like I’m beating this to death but I want to make sure that we’re both on the same page.
Unplug all the injectors; turn the ignition on, with a test light clipped to a known good ground. Tell me what wire(s) will light the test light. Don’t forget to unplug ALL the injectors before you test this; it would be an invalid test if you don’t.
Why I want to know this is that you should never have power on the blue or green wires of the injectors with them (again) all unplugged.
Did I mention to unplug all the injectors LOL
If there is power only on the pink wires, then with the injectors still unplugged; try the noide light in each injector connector. Does the noide light blink while cranking the engine?
Dan.
Canadian "EH"
(This post was edited by DanD on Mar 27, 2008, 4:00 AM)
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