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LS1 wont idle

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Old Mar 19, 2014 | 06:36 PM
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GREAT WHITE SS's Avatar
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Default LS1 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

no mods other then headers. fuel pressure is good. no dtcs showing up.

Last edited by GREAT WHITE SS; Mar 19, 2014 at 06:43 PM.
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Old Mar 19, 2014 | 06:47 PM
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You will probably get more responses in the PCM Diagnostics & Tuning section.
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Old Mar 19, 2014 | 07:32 PM
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Can a mod move this please?
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Old Mar 20, 2014 | 03:17 PM
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Please lock or delete
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