Preventing Run-On

[Yellow Truck]

Ross - I was looking for my notes but by memory I'm at 26 initial, 36 total. While it was idling and we were testing I took initial all the way to 34 and it didn't make a difference. We took it back to 24, where it started to slow down, locked it at 24.

The transition slot is now just barely visible as it is.

Doug - it is a manual, I have been waiting till it fires after I turn off the ignition before I load the engine since it doesn't do it every time. I am thinking from what you and a couple of others are saying is I should just load it as soon as I kill the ignition. It just makes me cringe to do it because once it starts it does give the truck quite a lurch.

[cjshaker]

Paul, there's no need to load it hard. It doesn't take much of a load at all to keep it from running on. I just barely engage the clutch, as if I were just taking up slack in the drivetrain...just enough to put a drag on the engine. I can't even feel it try to push the car.

[Yellow Truck]

I'll try loading it earlier, right now it takes almost the full release of the clutch to stop it once it starts. Now I use 2nd gear (really first on the NP435) but my neighbour suggested using a higher gear.

[My427stang]

I'll try loading it earlier, right now it takes almost the full release of the clutch to stop it once it starts. Now I use 2nd gear (really first on the NP435) but my neighbour suggested using a higher gear.

Just let the clutch out as you shut it down, don't wait for it to start dieseling.  Usually it'll be on it's way down and just shut off

[Yellow Truck]

I will make that my standard shut down procedure. Otherwise it is running like a top. Going to order a GM style disc kit for the front (assuming the vendor gets back to me with an invoice) which involves new spindles, bearings, and hubs.

It is kind of scary how quickly it acquires speed and how slowly it shed it.

[machoneman]

Actually any old Ford or GM solenoids will work. The Boss 302 unit btw is amazingly expensive, much akin to Boss 302/429 emissions gear.

[allrightmike]

Hope this is not irrelevant but does run on ever occur with EFI?   

[GerryP]

Hope this is not irrelevant but does run on ever occur with EFI?

No.  With EFI, there is no fuel once you turn it off.

[Yellow Truck]

I just couldn't stand it, even shutting it down in gear, so I ordered a Standard idle solenoid ($50) and a Holley bracket ($13) and found out it sat about 1.6 inches too low. Made a mounting block (scrap 1/2 inch aluminum) and bought 2 stainless 2.25 inch allen head bolts ($2) and got it installed.

She still wants to run on, you can hear her try, but with no air or gas she dies cleanly.

[Barry_R]

Good to know that the fix worked

[Yellow Truck]

Has the added advantage that I can set the idle a little higher.

[machoneman]

Glad the fix worked.