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-   2nd Generation Specific (1986-1992) (https://www.rx7club.com/2nd-generation-specific-1986-1992-17/)
-   -   poor Idle (https://www.rx7club.com/2nd-generation-specific-1986-1992-17/poor-idle-1172376/)

joescuzzi Jan 27, 2026 01:23 PM

poor Idle
 
hey guys I have a 1987 rx7 turbo model. I bought if off someone who did an emissions delete just for a bit of backstory. when I start the car its starts fine but it idles around 1300 rpms, then after like 5 minutes they start to bounce from 1k to 1300. just wondering what it could be and if anyone can help or has had the same problem.

johns8403 Jan 28, 2026 09:56 AM

can you provide pictures? we dont' know what "emissions delete" entails since you can remove all of it or only parts of it.

j9fd3s Jan 28, 2026 12:09 PM

first thing is to start with the basics. set the TPS, check the timing, idle mixture, etc

professionalpyroman Jan 28, 2026 01:25 PM

How "thorough" was the emissions delete? Is the main vacuum system still hooked up? If stuff is missing, I would check that first, then TPS. Adjusting idle with BAC screw should be reserved for after you've checked the other stuff.

joescuzzi Jan 28, 2026 05:22 PM

https://cimg0.ibsrv.net/gimg/www.rx7...f221f6a850.png
this is the only photo I have off hand, sorry for it being so zoomed out. let me know if you would need more also like I said it has a BAC delete. idk if I should add that back in also how do I adjust the TPS like other people have been saying

johns8403 Feb 4, 2026 01:04 PM

The BAC controls the idle, lots of people complain about the idle quality suffering after the BAC. I would put it back if you have it otherwise you're gonna have to dial it in once it's warmed.


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