car idles fine warm but not cold

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kaino

Post subject: car idles fine warm but not cold

Posted: Sun Jun 20, 2010 8:24 pm

Oompa Loompa

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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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EBXR8380

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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xafalcon

Post subject: Re: car idles fine warm but not cold

Posted: Mon Jun 21, 2010 7:35 am

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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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xafalcon

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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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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kaino

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: 38

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Ride: Falcon EF XR8

Location: Perth
WA, Australia

where can i get a scanner to do the scans?

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galapogos01

Post subject: Re: car idles fine warm but not cold

Posted: Tue Jun 22, 2010 11:01 am

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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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EBXR8380

Post subject: Re: car idles fine warm but not cold

Posted: Wed Jun 23, 2010 4:50 pm

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

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kaino

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: 38

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Ride: Falcon EF XR8

Location: Perth
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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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