Mustang 2005 GT - idle rough and gas smell

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johnvpr
Posts: 4
Joined: Thu Jul 30, 2020 12:14 am
Vehicle: Mustang 2005 GT

Mustang 2005 GT - idle rough and gas smell

Post by johnvpr »

Hello, All,

I removed my Manifold intake for a water leak and once re-installed the idle is rough goes up randomly to 1500/2000rpm and there is a huge gas smell :o

I also bought a new Manifold since the old one had a small leak :? but no change still.

I build a smoke machine (youtube diy) and it looks there are no leaks.

How can I use FORScan to troubleshoot the issue I am having, which sensors I need to monitor?

Thank you


John
lenko
Posts: 577
Joined: Sat Dec 24, 2016 6:40 pm
Vehicle: 2015 Lincoln MKC, 2006 Mustang GT, Saleen 530 HP

Re: Mustang 2005 GT - idle rough and gas smell

Post by lenko »

I would check all the injectors to see if all the 0 rings are in place and seated and also make sure the gaskets under the intake runners and or the charge motion plates are in good shape and in place. Also check to see that the plug for the charge motion plates functioning is plugged in at the back of the intake.
johnvpr
Posts: 4
Joined: Thu Jul 30, 2020 12:14 am
Vehicle: Mustang 2005 GT

Re: Mustang 2005 GT - idle rough and gas smell

Post by johnvpr »

All o-rings, are seles, gaskets, manifold and motion plates are new and no leaks tested with a smoking machine :(.

How can I use FORScan to troubleshoot the issue I am having, which sensors I need to monitor?
johnvpr
Posts: 4
Joined: Thu Jul 30, 2020 12:14 am
Vehicle: Mustang 2005 GT

Re: Mustang 2005 GT - idle rough and gas smell

Post by johnvpr »

I found this guide to read OBD2 sensor very useful:

https://scanneranswers.com/read-live-da ... can-tools/
johnvpr
Posts: 4
Joined: Thu Jul 30, 2020 12:14 am
Vehicle: Mustang 2005 GT

Re: Mustang 2005 GT - idle rough and gas smell

Post by johnvpr »

I finally figure it out, the OBD2 reading it says coolant temperature -40, so I followed the sensor cable and find out that was connected in the wrong way
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