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EF rough idling with AC on - please help! 

 

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 Post subject: EF rough idling with AC on - please help!
Posted: Sun Jan 15, 2006 3:18 pm 
Getting Side Ways
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Hey guys,

My car idles roughly (excessive vibration, 650rpm) when in D with the AC on, but when I put it into N the revs come up to 700rpm, and the vibration stops!

This has really only started happening since I've done exhaust mods etc.

What can I do to correct this?

Is it possible for me to adjust the idle MANUALLY (when in D with AC on) up 50 rpm somehow, or will I have to take it to a Ford dealer to reset the Idle Speed Controller / ECU etc?

I have followed the ECU resetting procedure posted on this site, but this doesn't help at all.

Sorry guys, but I'm stumped on this one ...so any suggestions would be great!

 

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Hot Chilli Red EL XR6, 5-spd, JMM DEV 5 enhanced (161 rwkw custom tuned), Eliminator Switch Chip, 18" BA GTP rims, Pedders Superlows, BA XR6 badges, BA Sunroof, Pioneer Stereo, Splits, 6x9's, 10" sub, 700W 6-ch Viper amp.
QUARTER MILE PB: currently 14.590 @ 96.00 mph ...BOOST AHEAD!!

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Posted: Sun Jan 15, 2006 4:16 pm 
Tyre Shredder
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there is a screw on the inlet manifold side of the engine which you twist to adjust the idle speed. You will find it, if you follow the accelerator cable to the end. It requires a flat head screw driver to adjust it.

 

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Posted: Sun Jan 15, 2006 8:32 pm 
Stock as a Rock
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Perhaps it's your idle control solinoid. The ICS adjusts the revs for things like the AC when it is on so as to maintain a constant idle......I think?

They are about $50 bucks from the wreckers or about $150 brand new.
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Posted: Sun Jan 15, 2006 11:03 pm 
Getting Side Ways
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partie wrote:
there is a screw on the inlet manifold side of the engine which you twist to adjust the idle speed. You will find it, if you follow the accelerator cable to the end. It requires a flat head screw driver to adjust it.


Cheers Partie!

Will I definitely have one on my EF?

Wouldn't happen to have a photo of where it's located, would you?

 

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Hot Chilli Red EL XR6, 5-spd, JMM DEV 5 enhanced (161 rwkw custom tuned), Eliminator Switch Chip, 18" BA GTP rims, Pedders Superlows, BA XR6 badges, BA Sunroof, Pioneer Stereo, Splits, 6x9's, 10" sub, 700W 6-ch Viper amp.
QUARTER MILE PB: currently 14.590 @ 96.00 mph ...BOOST AHEAD!!

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Posted: Mon Jan 16, 2006 10:16 pm 
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Could be injectors need cleaning $200
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Posted: Mon Jan 16, 2006 10:49 pm 
Getting Side Ways
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trex wrote:
Could be injectors need cleaning $200


Could be, I haven't had them cleaned since I bought the car about a year ago ...and who knows how long before that?

Could dirty injectors cause rough starting on hot days too? (another niggling prob I have)

 

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Hot Chilli Red EL XR6, 5-spd, JMM DEV 5 enhanced (161 rwkw custom tuned), Eliminator Switch Chip, 18" BA GTP rims, Pedders Superlows, BA XR6 badges, BA Sunroof, Pioneer Stereo, Splits, 6x9's, 10" sub, 700W 6-ch Viper amp.
QUARTER MILE PB: currently 14.590 @ 96.00 mph ...BOOST AHEAD!!

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Posted: Mon Jan 16, 2006 10:53 pm 
Getting Side Ways
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Location: Perth
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partie wrote:
there is a screw on the inlet manifold side of the engine which you twist to adjust the idle speed. You will find it, if you follow the accelerator cable to the end. It requires a flat head screw driver to adjust it.


Hey Partie,

I think I've found it, is it like a little grub-screw with a flat-head screwdriver groove?

If so, I've got a little problem because the top of the screw has snapped off on one side of the groove ...so I can't use a screwdriver on the bastard!

 

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Hot Chilli Red EL XR6, 5-spd, JMM DEV 5 enhanced (161 rwkw custom tuned), Eliminator Switch Chip, 18" BA GTP rims, Pedders Superlows, BA XR6 badges, BA Sunroof, Pioneer Stereo, Splits, 6x9's, 10" sub, 700W 6-ch Viper amp.
QUARTER MILE PB: currently 14.590 @ 96.00 mph ...BOOST AHEAD!!

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