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Got the dreaded "Service Engine Soon" warning light...

K4fxd

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I just assumed that the 1st DTC listed in the report was the most current,
If that were the case the light would be on.
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merlin803

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If you are handy with computers there is a free software called ForScan that gives you dealer level access to your car's systems.
I took your advice and used Forscan on a laptop. The first two codes on the "PCM" modules do show "Previously set DTC - not present at time of request"

The third code, on the OBDII module just says that the P0305 "Malfunction is confirmed".



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K4fxd

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"Malfunction is confirmed" is when it turned the light on.
 
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merlin803

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"Malfunction is confirmed" is when it turned the light on.
I appreciate your help. I won't worry about it unless something new pops up.
 

m3incorp

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Certain codes are stored permanently or semi permanently.....this doesn't mean the car still has the error. If the light went off, the code is no longer active. K4xfd has provided good advice. I always keep a code reader and do my own diagnostics. I am showing a catalyst code currently; came on yesterday after filling up. I had the code before ( I am Roush supercharged) and dealer noted it and cleared code. They told me when the cat's really go bad, they already have it noted and will replace under warranty. As a side note, missfires can happen depending on fuel and circumstances and other varioius reasons. The sensors are doing their job in your car.
 

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m3incorp

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Did you reinstall your throttle controller? Did you get any real benefits from it, in your opinion? I have a Solar throttle body and Controller on my manual car (my car was the guinee pig for them), but enjoy hearing others experiences.
 
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merlin803

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Did you reinstall your throttle controller? Did you get any real benefits from it, in your opinion? I have a Solar throttle body and Controller on my manual car (my car was the guinee pig for them), but enjoy hearing others experiences.
I did not reinstall it and am not really missing it.

I bought the TC when I had my 22 GT, because the trans shifting was so sporadic in anything but normal mode, I had to keep it in normal mode and I hated the sluggish feeling of the throttle response.

For my Mach 1, I just installed it because I had it but since I almost always drive in Sport mode, I find the throttle response is fine without the TC.
 

m3incorp

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I would agree driving in sport mode tends to make me think there is no need for a throttle controller.
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