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car idles fine warm but not cold 

 

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 Post subject: car idles fine warm but not cold
Posted: Sun Jun 20, 2010 8:24 pm 
Oompa Loompa
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Age: 31

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Ride: Falcon EF XR8

Location: Perth
WA, Australia

on a cold start my car idles very low almost stalling, but once she gets warm she idles perfect. I checked the tps voltage and it is under 1 volt. any ideas?
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 Post subject: Re: car idles fine warm but not cold
Posted: Sun Jun 20, 2010 11:26 pm 
Getting Side Ways
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Check idle speed control is working? Clean with carb cleaner..
Check coolant sensor if above doesn't do anything..
Or reset TPS / idle as in

 

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As in ZOOM 126 edition
331 Dart block,3.25/ 4340 steel crank, Oliver rods,TFS ported track heat heads, TFS track heat inlet Twin SC61 turbo's
Project 1UZ-EF has started.. S475 Turbo 4.0 V8 Mustang Celica.....

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 Post subject: Re: car idles fine warm but not cold
Posted: Mon Jun 21, 2010 7:35 am 
Getting Side Ways
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Do a scan, KOEO and KOER. This should help tie down the source of the problem. As EBXR8380 says, most likely to be ECT sensor or ISC.

 

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XA Faimont 351C, AU2 XR8 Manual 5.0, DA LTD 5.0, Mk1 Capri 5.0, 1995 Mustang 5.0, EF2 XR8 Manual, EF2 Fairmont Ghia 5.0, AU3 XR8 Auto, AU2 XR8 Auto, AU2 XR8 Manual Ute, TE Cortina 5.0 Manual, DU LTD 5.0 soon to be manual

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 Post subject: Re: car idles fine warm but not cold
Posted: Mon Jun 21, 2010 7:36 am 
Getting Side Ways
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Posts: 699

Joined: 1st Jan 2006

Ride: Lots, all Fords

Location: Hamilton
New Zealand

Do a scan, KOEO and KOER. This should help tie down the source of the problem. As EBXR8380 says, most likely to be ECT sensor or ISC.

 

_________________

XA Faimont 351C, AU2 XR8 Manual 5.0, DA LTD 5.0, Mk1 Capri 5.0, 1995 Mustang 5.0, EF2 XR8 Manual, EF2 Fairmont Ghia 5.0, AU3 XR8 Auto, AU2 XR8 Auto, AU2 XR8 Manual Ute, TE Cortina 5.0 Manual, DU LTD 5.0 soon to be manual

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 Post subject: Re: car idles fine warm but not cold
Posted: Mon Jun 21, 2010 12:38 pm 
Oompa Loompa
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Age: 31

Posts: 49

Joined: 2nd Mar 2008

Gallery: 3 images

Ride: Falcon EF XR8

Location: Perth
WA, Australia

where can i get a scanner to do the scans?
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 Post subject: Re: car idles fine warm but not cold
Posted: Tue Jun 22, 2010 11:01 am 
Getting Side Ways
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Ride: Supercharged EF Fairmont

Location: T.I. Performance HQ
VIC, Australia

Put a multimeter on the ISC. EF ECUs have a tendancy to blow the ISC output driver hence no idle air control.
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 Post subject: Re: car idles fine warm but not cold
Posted: Wed Jun 23, 2010 4:50 pm 
Getting Side Ways
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Power: 482 rwkw

Location: Penrith
NSW, Australia

In the mean time just turn the idle up alittle...

 

_________________

As in ZOOM 126 edition
331 Dart block,3.25/ 4340 steel crank, Oliver rods,TFS ported track heat heads, TFS track heat inlet Twin SC61 turbo's
Project 1UZ-EF has started.. S475 Turbo 4.0 V8 Mustang Celica.....

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 Post subject: Re: car idles fine warm but not cold
Posted: Wed Jun 23, 2010 8:09 pm 
Oompa Loompa
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Age: 31

Posts: 49

Joined: 2nd Mar 2008

Gallery: 3 images

Ride: Falcon EF XR8

Location: Perth
WA, Australia

yeah thats what ive done, idles a bit high when warm but when i get some time ill check the isc.
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