code 14

I just started getting a code 14 suddenly tonight. The engine seems to be running fine except once it warms up it starts stumbling and the tach drops quickly a few hundred RPM and then goes back up. It idles fine and runs good for about 15 minutes, but as I said once it warms up it stumbles...

To make a long story short, wiring harness was sitting on hot part of exhaust gas recirculating system, thereby causing the Code 14. You could only see it after lifting harness and looking very close to see hairline melting and the exposed wiring that would contact pipe after car warmed up...

Annnnd we're back with more problems. Yesterday, I changed my air filter. In the process, somehow, my oil sender unit got unplugged. I noticed that last night as I was driving , and my oil pressure gauge wasn't working. So, I removed my air intake to get at the oil sender, and when I tried to...