Surging idle on a stock 5.0

[Anthony]

is it losing a crank signal?

I don’t know how to check dat

[Anthony]

Still hunting that stupid fitting.

I have a gauge. I might just swap the fpr as good measure


Man it’s a total turd.

But I remember in 86, I thought it was the fastest shit on earth. 86 T top AOD jalapeño GT
We drove it off the line in Dearborn. Watched it come down the line too. I’m sure there are Polaroids somewhere

I thought I was a badass

[mikesfastss]

F9892567-D871-4DE7-82B0-8A4E29F0BDEB.pngi found a pic of you lol

[chacho44]

Sell it

[Anthony]

F9892567-D871-4DE7-82B0-8A4E29F0BDEB.pngi found a pic of you lol

Looks like Stanford

[sidewayscoupe]

On a completely stock car. I can’t see where that would be needed. I sprayed all over the Intake..... I’ll focus on the TB tonight. It will start and run and drive. Just every now and then idle will drop to 500 rpm and sometimes die

Ford dealers used them back in the day to fix your issue (on stock cars)

I will try to find the Ford P/N and TSB


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[Anthony]

No shit

Crazy

Now I’m also looking for a TV cable

[my89notchback]

Didn’t you just buy a big block Chevy? Time to drop that in there.

[JoeP.]

Ford dealers used them back in the day to fix your issue (on stock cars)

I will try to find the Ford P/N and TSB


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True story, we used a few of those back in my dealership days. Also, the TB adjustment screw would wear a dimple into the stop plate after years, causing the blade to close more than it should. The IAC couldn't compensate enough to smooth out the idle and things get wonky. Maybe try cracking the blade open another half turn and clean around the perimeter of the blade real well.
Here is one of the IAC bypass plates on fleabay with the part number.
https://m.ebay.com/itm/OEM-NEW-Engin...-/191761527861

[Anthony]

The TV cable is broken. Dealer says obsolete. Parts stores ask if it’s a auto or manual and then say they cant get it.

Joe

I reset the idle. Which helped. Put almost 2 turns on the screw. Tps was way off too.