Throttle Jack

For all those wiring gremlins we love, this is the place to discuss them.

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MikeR
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Model: Excel SE
Colour: Calypso Red
Year: 1991
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Throttle Jack

Post by MikeR »

Hi
So when I got my car the throttle jack was disconnected which I know makes no great difference to the running on the engine but I would like to get it operating again. So when I connect a 12v supply to the solonoid it operates ok but when connected normally there is no 12v supply when revving the engine and returning to idle.
Any ideas where I should be checking?

Thanks

ianhateswork
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Re: Throttle Jack

Post by ianhateswork »

I belive it's to increase Idle speed when ac is running.
I don't know if you get a 12v to it just by pushing the ac button or whether you have to have a working system.

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Alan_M
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Re: Throttle Jack

Post by Alan_M »

ianhateswork wrote: Sat Apr 11, 2026 12:59 I belive it's to increase Idle speed when ac is running.
I don't know if you get a 12v to it just by pushing the ac button or whether you have to have a working system.
Non AC cars also have them.

With AC car - should energise when AC switched on

Non AC - energises with rising revs above 1600rpm and de-energises on falling revs at 1400rpm.

All explained in section EMB.6 of service notes.

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