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Old 06-07-2018, 02:18 PM   #176
bmdubya1198
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Okay makes more sense. So youíre getting a pulse, but no fuel is coming from the injectors? My guess is either insufficient fuel pressure or dead injectors
Yup. I checked the plugs too, bone dry, no fuel smell. I take it the injectors are dead. Went ahead and bought a set for cheap, those should be here in the next few days.
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Mmmmm.....light shouldn't illuminate key off. Just blink while cranking. That sounds like your wiring is shorted to ground on that injector ground circuit. Remember that converstion???? I recall you saying you found bare wiring. Whatever happened with that!?

Replacing components when the circuit is no good is a bad move.

Current takes the path of least resistance. If you have a short to ground before the computer, most of the current will go thru the short instead of the ecu.
The joint where all of the ground wires from the injectors come together was peeled away, but I already taped it all up and made sure it was not making any contact with anything else. The rest of that wire was good.

What could cause the terminal to ground out with the key off?
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Old 06-07-2018, 04:30 PM   #177
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A short to ground in the wiring or the ECU. Unplug the ECU and see if it goes away.

Measure restsiamce between njector ground terminal and a good ground. It should be in the kilo ohms range. If its 0 ohms or anything lowish you have a short.
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Old 06-07-2018, 05:34 PM   #178
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It's about 453 ohms.
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Old 06-07-2018, 05:54 PM   #179
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Unplug the ecu and repeat.
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Old 06-07-2018, 07:15 PM   #180
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Unplug the ecu and repeat.
Open circuit. What's that about now? Dead ECU?
I guess that's a good thing actually, it means the wiring for the injector ground isn't grounding elsewhere.
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Old 06-07-2018, 07:17 PM   #181
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She's a witch! She is made of wood and therefore will float proving she is a witch!
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Old 06-08-2018, 12:32 AM   #182
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Open circuit. What's that about now? Dead ECU?
I guess that's a good thing actually, it means the wiring for the injector ground isn't grounding elsewhere.

Nah that's good. If you unplugged and still had continuity to grond i would be concerned..
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Old 06-08-2018, 10:01 AM   #183
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Nah that's good. If you unplugged and still had continuity to grond i would be concerned..
Okay, that's what I thought.
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Old 06-09-2018, 07:21 PM   #184
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She RUNS!!! Got the injectors today, and after cranking for a while (had to build up some fuel pressure) it finally fired up! I adjusted the timing a little bit and got it idling fairly smoothly. I still need to do a lot of work on the car overall, but I'm so glad to be past this huge hurdle.

Thank you to everybody who has contributed, PromiseRing and ZVOLV in particular who have been especially helpful recently. Any other issues I can't figure out will be in separate threads... 180+ posts is plenty!
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Old 06-09-2018, 07:25 PM   #185
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Well done! Glad to see you got it running.
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Old 06-09-2018, 09:17 PM   #186
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Well done! Glad to see you got it running.
Thanks, me too! Tomorrow I need to get the timing dialed in and figure out my shifter issue. Iím hoping itís just related to seized up linkages from the car sitting so long.
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Old 06-10-2018, 12:11 AM   #187
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Awesome man!!

So it was really just bad injectors? All 4? How does that happen lol
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Old 06-10-2018, 12:16 AM   #188
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Just when I started to think this thread was to long...haha congrats!! That is crazy though..
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Old 06-10-2018, 09:54 AM   #189
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Yeah, it it strange, but that's what finally got it running! It definitely needed a lot of the other things I changed, though, like the old ECU that wasn't allowing injector pulse. This car had to be sitting at least 7 or 8 years before I bought it. I don't believe for a second that the car was only sitting for a year, especially with how nasty the entire fuel system was.

This is one of the old injectors... they could have been pretty clogged, which may have been part or all of the problem there. But I don't think these were even firing. Maybe because of the PO's poor wiring of the ballast resistor.
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Old 06-10-2018, 10:29 AM   #190
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Awesome! Glad I could help. The $20 check is in the mail.
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Old 06-10-2018, 12:01 PM   #191
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Awesome! Glad I could help. The $20 check is in the mail.
Hahaha I was going to say...
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