unplugging connectors while running bad?

[wchsnowremoval]

Have you performed a drag test on the under valve cover harness?

 

[89 Stroker]

not yet , just got done figuring out that was part of the problem

 

[2000wa250]

If the problem did not chase the stick, then yes, I would say harness is bad. Could be wires themselves, or main plug or injector plug. Swapping sticks rules out solenoid, stick, or the connector on the solenoid.

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[89 Stroker]

the swapping it did , now on to find what wires are bad , could it possibly stil be the idm tho?

 

[89 Stroker]

what are the numbers i should see for a resistance check on those set of wires?

and how would i go about doing one

 

[OBS-Addiction97]

What brand CPS did you use?

 

[89 Stroker]

What brand CPS did you use?

motorcraft

 

[89 Stroker]

anyone?

 

[m j]

I am watching as I have the exact same issue except mine was/is passenger side.
it went away for a couple of months when I did a bunch of work so I must have moved the harness to a spot that didnt short for that time
at this point I am looking to just replace the entire injector harness with home brew. already swapped the valvecover over to SD stuff and it didnt solve it, so it has to be upstream from what I cut off already
swapped IDMs (ran perfect for 3 days), CPS, UVCH

 

[racerdad2]

If you're looking for a broken wire, you'll get no reading on the ohm meter if its a clean break. An intermittent short is tougher to find. I'm guessing you'll have very little to no resistance on good wires.

Someone will surely correct me if I've gotten this wrong. Tracking down electrical shorts requires patience, which I'm short of. Happy hunting !

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[89 Stroker]

took it to the dealer and they told me i have a bad injector ,