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PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

ls1 swap wont idle

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Old Mar 19, 2014 | 07:42 PM
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Default ls1 swap wont idle
I can't seem to get my ls1 to idle. It is a swap into an 89 Mustang. it will rev up if you hold throttle past 20%.

04 gto long block
01 camaro pcm wired to LT1swap.com diagram. no vats, no prndl switch, no egr, no rear o2 sensors. all deleted with hptuners. i pulled the factory tune out, shut all these off, and reinstalled the tune.
04 gto injectors, maf sensor, and throttle body
dynatech longtube headers, no cats
4l60e

All parts came from running cars

no mods other then headers. fuel pressure is good. no dtcs showing up.
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Old Mar 19, 2014 | 08:39 PM
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You really need to at least post a scan for others to look at what may be wrong.
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Old Mar 19, 2014 | 09:07 PM
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Originally Posted by coSPEED2
You really need to at least post a scan for others to look at what may be wrong.
I can put readings from our scan tool or do you mean my tune file?
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Old Mar 19, 2014 | 09:08 PM
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I mean the scan you take with HP Tuners. If you used HP Tuners to modify the file, then you can use it to scan your setup and save it and post it up.
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Old Mar 20, 2014 | 07:53 AM
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map sensor may need to be calibrated, tps may need calib. list of things can be wrong
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Old Mar 20, 2014 | 12:33 PM
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Old Mar 20, 2014 | 01:30 PM
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this is me trying to start it 3 times. first time it sounded like it wanted to stay running but didn't.
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Old Mar 20, 2014 | 02:31 PM
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update:

took iac valve off, cleaned it, reinstalled, engine idled a little high for a good second and then died but before the cleaning it wouldnt idle at all.
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Old Mar 20, 2014 | 02:38 PM
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You need a tune indeed and a different config. That one isnt showing nearly enough info. Looks like you are using the OG config. If you need some help, we are available.
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Old Mar 20, 2014 | 03:19 PM
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Copied over a stock tune from hptuners. There were a few differences in it and the one i pulled from my pcm. It runs!!!
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