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SN-95 and New Edge Mustangs
02 Gt Bad Idle
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<blockquote data-quote="BlackStang00" data-source="post: 16869134" data-attributes="member: 127325"><p>A little backstory, I bought my 02 gt from a small time dealer on the east coast. He didn’t know much about it but it was clean and ran well so I picked it up. I will say the previous owner cobbled together a cai so I’m thinking it was supercharged and the po threw together an intake after removing the supercharger. Anyway, It runs pretty well but has issues where it’ll surge and run like crap until you give it some throttle. It’s throwing a bunch of codes, a lot of them have to do with the front o2 sensors and lean on both banks. I’ve had some time to tinker with it so I’ve been doing some datalogging. Nothing looks out of place but the fuel trims are pegged full rich. When I drive around, the short term fuel trims will go back to normal but as soon as I let off the gas it shoots back up to full rich. The only thing that stuck out is my maf lb/min bounced around from .3-.5 at idle. I’m not a tuner but that seems low compared to other 2v’s I’ve seen. Anyone have a similar experience? Everything physically checks out. I’m thinking maybe maf and tune? Any input would be appreciated. I have a copy of the log taken on Forscan that I could send out if someone wants to take a look</p><p></p><p>[ATTACH=full]1778018[/ATTACH][ATTACH=full]1778019[/ATTACH][ATTACH=full]1778020[/ATTACH]</p></blockquote><p></p>
[QUOTE="BlackStang00, post: 16869134, member: 127325"] A little backstory, I bought my 02 gt from a small time dealer on the east coast. He didn’t know much about it but it was clean and ran well so I picked it up. I will say the previous owner cobbled together a cai so I’m thinking it was supercharged and the po threw together an intake after removing the supercharger. Anyway, It runs pretty well but has issues where it’ll surge and run like crap until you give it some throttle. It’s throwing a bunch of codes, a lot of them have to do with the front o2 sensors and lean on both banks. I’ve had some time to tinker with it so I’ve been doing some datalogging. Nothing looks out of place but the fuel trims are pegged full rich. When I drive around, the short term fuel trims will go back to normal but as soon as I let off the gas it shoots back up to full rich. The only thing that stuck out is my maf lb/min bounced around from .3-.5 at idle. I’m not a tuner but that seems low compared to other 2v’s I’ve seen. Anyone have a similar experience? Everything physically checks out. I’m thinking maybe maf and tune? Any input would be appreciated. I have a copy of the log taken on Forscan that I could send out if someone wants to take a look [ATTACH type="full"]1778018[/ATTACH][ATTACH type="full"]1778019[/ATTACH][ATTACH type="full"]1778020[/ATTACH] [/QUOTE]
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02 Gt Bad Idle
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