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au idleing problem (please help, im going crazy) 

 

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 Post subject: au idleing problem (please help, im going crazy)
Posted: Thu May 31, 2007 12:47 am 
Getting Side Ways
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Ride: ef fairmont turbo

Power: 213 rwkw

Location: melbourne
VIC, Australia

lately my au has been idleing like s**t,(getting worse by the day).
the thing is it dosent always happen, just happens randomly.
ild be slowing down and the revs will just drop for no reason, kind of the same thing it does when you switch a/c on in a stationary position.
ive just serviced the car and theres been no diffrence, cleaned the throtlle body, new fuel filter and no diffrence. then changed the cat, no diffrence. had a machanic play aorund with the idle controller, and still no diffrence. the car isnt running rich and is still giving superb fuel econ.
any ideas anyone??? its driving me nuts

 

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96 EF FAIRMONT
Garrett gt40turbo, iceman plenum, ported head, turbo cam, double valvesprings, 023 fuel pump, 36lb injectors 4' cat, 4' dump, 2.5 exhaust, build bottom end, hypertonic pistons rods & rods, king bearings, j3. c10 3500 stall
232rwkw@4psi

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 Post subject: Re: au idleing problem (please help, im going crazy)
Posted: Thu May 31, 2007 12:56 am 
Fordmods Junkie
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Ride: EL Fairmont, VFR400 racer

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VIC, Australia

4dlvr wrote:
lately my au has been idleing like s**t,(getting worse by the day).
the thing is it dosent always happen, just happens randomly.
ild be slowing down and the revs will just drop for no reason, kind of the same thing it does when you switch a/c on in a stationary position.
ive just serviced the car and theres been no diffrence, cleaned the throtlle body, new fuel filter and no diffrence. then changed the cat, no diffrence. had a machanic play aorund with the idle controller, and still no diffrence. the car isnt running rich and is still giving superb fuel econ.
any ideas anyone??? its driving me nuts


exhaust leak maybe? im just taking a stab....if not reset the ECU and see how that goes. maybe the ISC is stuffed and you need a new one.

phong =P~

 

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phongus = Post whore 2006
EL XR6 motor, EL ECU + J3 chip, WADE 1673 Camshaft, 3" S/S intake, Pacy 4480, 2.5" Hi flow cat, 2.5" Lukey exhaust.
Max Power = 144.6 rwkw (03/05/2008)

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Posted: Thu May 31, 2007 1:01 am 
Getting Side Ways
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exhaust is bout 40,000km old, but has no leaks. i reset the ecu and it made no diffrence. ive cleand the isc and it didnt make any diffrence. i highly doubt its stuffed but ill look into replacing it anyway

 

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96 EF FAIRMONT
Garrett gt40turbo, iceman plenum, ported head, turbo cam, double valvesprings, 023 fuel pump, 36lb injectors 4' cat, 4' dump, 2.5 exhaust, build bottom end, hypertonic pistons rods & rods, king bearings, j3. c10 3500 stall
232rwkw@4psi

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Posted: Thu May 31, 2007 4:20 am 
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Idle speed controller dirty ?
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Posted: Thu May 31, 2007 5:11 pm 
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Darkr wrote:
Idle speed controller dirty ?

Either that or faulty ... it's a common replacement item as they can start playing up over time.

 

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Posted: Thu May 31, 2007 6:13 pm 
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oxy sensor.
is it on gas?
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Posted: Thu May 31, 2007 7:30 pm 
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sorry to steal this thread but i have the same on a friends au1 can the isc just s**t itself after battery has been diconected as i have reset ecu, base idle ect but does the exact same thing so i was thinkin that but dont want to be replacing it yet if there is another fix if i was my car i would but been a friends just not yet

 

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Posted: Fri Jun 01, 2007 12:39 am 
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its on petrol, i cleaned the isc even though it was allready clean. oxy sensor is new, everything is good within the car, it just sometimes for some reason idle real low for a second. dosnt stall ar anything. ill replce it just incase on the week end

 

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96 EF FAIRMONT
Garrett gt40turbo, iceman plenum, ported head, turbo cam, double valvesprings, 023 fuel pump, 36lb injectors 4' cat, 4' dump, 2.5 exhaust, build bottom end, hypertonic pistons rods & rods, king bearings, j3. c10 3500 stall
232rwkw@4psi

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Posted: Fri Jun 01, 2007 11:44 am 
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i had the same problem with my ef fairmont 6cyl, i cleans the isc and throttlebody no diffrence, then i thought stuff this and bought a new isc from bursons and fitted it runs perfect now, idles great revs dont drop at all, even when braking with aircon on lol

 

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Posted: Fri Jun 01, 2007 12:19 pm 
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how much for isc from bursons?
I think we all have this problem at times....
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Posted: Fri Jun 01, 2007 4:59 pm 
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oops

 

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Last edited by grumblebum04 on Fri Jun 01, 2007 7:12 pm, edited 1 time in total.

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Posted: Fri Jun 01, 2007 4:59 pm 
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oops 2

 

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Last edited by grumblebum04 on Fri Jun 01, 2007 7:12 pm, edited 1 time in total.

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Posted: Fri Jun 01, 2007 4:59 pm 
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QLD, Australia

and again

 

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Last edited by grumblebum04 on Fri Jun 01, 2007 7:13 pm, edited 1 time in total.

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Posted: Fri Jun 01, 2007 5:01 pm 
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Check fuel return line hasn't been crushed.

Could also be s**t in tank or pump filter collapsing.

Grumbles

 

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Posted: Fri Jun 01, 2007 11:52 pm 
Getting Side Ways
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Age: 29

Posts: 1538

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Ride: ef fairmont turbo

Power: 213 rwkw

Location: melbourne
VIC, Australia

grumblebum04 wrote:
Check fuel return line hasn't been crushed.

Could also be s**t in tank or pump filter collapsing.

Grumbles


4 posts for about 15 words???? hehe
i always use high octane bp which i find to be good fuel.
fuel filter has recently been replaced. thanks anyway

 

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96 EF FAIRMONT
Garrett gt40turbo, iceman plenum, ported head, turbo cam, double valvesprings, 023 fuel pump, 36lb injectors 4' cat, 4' dump, 2.5 exhaust, build bottom end, hypertonic pistons rods & rods, king bearings, j3. c10 3500 stall
232rwkw@4psi

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