Fast idle solenoid

[Large Marge]

My fast idle is sticking. I noticed there is some build-up on the pin. Can I take it apart and clean it up?

1989 F250 7.3idi 95,000!!

 

[icanfixall]

Not really but clean it anyway you can. Its just a brass pin. there is no seal on that brass plunger shaft.

 

[chris142]

Mine acts weird sometimes too. 90% of the time it works fine but once in a while it will come out farther and idle @1600 rpm till it kicks off.

 

[OLDBULL8]

You do know after the key ON, you have to cycle the foot throttle one time for the solenoid to set, it's not strong enough to push open the IP arm.

 

[chris142]

You do know after the key ON, you have to cycle the foot throttle one time for the solenoid to set, it's not strong enough to push open the IP arm.

Yuppers

 

[Goose_ss4]

i put mine on a toggle switch. to help with cold starts and warm ups. my sensor in the head or block doesnt work.

be careful though you can ruin an injection pump running it on all the time.

 

[mjs2011]

i put mine on a toggle switch. to help with cold starts and warm ups. my sensor in the head or block doesnt work.

be careful though you can ruin an injection pump running it on all the time.

Ruin the IP just from high idle? I'm assuming your wiring turns on the high idle as well as the timing advance. To do it right, you need to use a diode to prevent powering the timing advance when you flip your switch for high idle. There is an article about it in the tech section.

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[ToughOldFord]

Ruin the IP just from high idle? I'm assuming your wiring turns on the high idle as well as the timing advance. To do it right, you need to use a diode to prevent powering the timing advance when you flip your switch for high idle. There is an article about it in the tech section.

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I don't follow that, the advance is supposed to be on at high idle, that's why both run off the same switch in the head.

 

[mjs2011]

Yes, the factory sending unit in the head uses the coolant temp to keep both on. The advance is only there to help with cold starts. The thing we are discussing is manually turning on the high idle for extended periods of time. For this, you don't want the timing advance to be activated, but if you simply run switched power to the high idle to turn on when needed, the advance will be powered too.

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[OLDBULL8]

You do know after the key ON, you have to cycle the foot throttle one time for the solenoid to set, it's not strong enough to push open the IP arm.

I was directing that to largemarge, not you Chris142

 

[Large Marge]

Yep I knw that. I unhooked the temp sensor and cleaned up the contacts they were gunked up. Cleaned up brass pin and she is working. Thanks

 

[kendawg69a]

So is it possible to have Continuous high idle?

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[79jasper]

If the plunger gets stuck out.


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[drinkypoo]

So is it possible to have Continuous high idle?

do you mean on purpose or by accident?

 

[kendawg69a]

On purpose lol

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