Common denominator injectors 1, 2, 3?

[84FLH]

Injectors 1 & 2 dropping signal rapidly and intermittently, with #3 injector losing signal for much longer duration; sometimes days before it starts working again.

Besides the injector harness, what's the common equipment, etc, to these 3 injectors that could be causing this?

 

[donalds]

The pcm
All the injectior share the same power wire

I'd start by checking wiring ... Connectors..ect...
Then look at the pcm

 

[84FLH]

The pcm
All the injectior share the same power wire

I'd start by checking wiring ... Connectors..ect...
Then look at the pcm

Good info. Thank you.

Do I have this right: all 6 injectors are spliced into the same, single, power wire?

Would that power wire be within the harness that's under the lower intake, or could I find that power wire without removing lower intake (no garage, 15 degrees outside today)?

Thank you again

 

[donalds]

all 6 injectors are spliced into the same, single, power wire?

Yes
You can check at the pcm connector and injector connector
Here is a picture of under the intake

 

[Turdle]

2nd gen issues? Try this first!

Sometimes a gremlin can be caused by the smallest thing. There are 2 large wire bundle connectors on the firewall. Both are held tight with a 10mm bolt. Any bad connection in either plug can cause just about any issue. from bad transmission shifting, bad o2 sensor readings, no start, no...

www.explorerforum.com

 

[J_C]

OP states can't make posts in this topic so here is the followup thread to continue it... and also a test of whether I can post in this topic or if it is somehow broken:

Thanks Donalds, Turdle. Can't seem to post reply in my "injector 1, 2, 3" thread.

Donalds; Thanks. Great picture. Shows what I needed to see. Turdle; Thanks. I reseated PCU connector few nights ago. Pins and connector housing were clean with no grit, dust, grime, dirt inside. Same for female side of connector. Reseated connector 4x then started engine. #3 miss was...

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