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Broken Diagnostic port?

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Old Apr 12, 2008 | 03:39 PM
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Default Broken Diagnostic port?

I bought my 99' Formula used about 3 months ago with H/C already installed on it. TTP did the tuning and second cam swap. I planned on taking the car to Vengeance to be tuned sometime this summer to fix the A/F at idle and to get some dyno numbers.

I have one of the hand held diagnostic tools that I use to read /erase codes on family's/friend's cars. I wanted to view my idle speed on the formula so I plugged it up and configured it for the car. As soon as I try to view any data it tells me to please plug the device into the DLC port. I have used this thing on about 10-12 other vehicles of all makes and models and it works fine. It is acting like the port is broken or not connected.

I have 3 questions.

1. Is there a fuse for the port?

2. Could this be a lockout feature put in place when the car was tuned with an aftermarket tuning program?

3. Has anyone ever had a port go bad?
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Old Apr 12, 2008 | 03:41 PM
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1. yes, same circuit as cigarette lighter
2. no
3. i havent
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Old Apr 12, 2008 | 03:56 PM
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I checked the fuse and it was blown. I replaced it and it still wont work. When I swapped out my shifter I did not connect the cigarette lighter and DC power plug back up. The connectors are just laying there. Could that have anything to do with it? The fuse did not blow when I turned the key on. I started it and it was still fine. Now I'm really getting confused.
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Old Apr 12, 2008 | 03:58 PM
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check it again, connections may be shorting out from not being hooked up or could have damaged your diag tool...
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Old Apr 12, 2008 | 04:22 PM
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Good call on the diag tool. I had to take the battery out and let it reset itself. Its all working good now. 975-1k rpm idle...
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