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Yesterday my I warmed up Excursion and drove down the road and when I got on the highway I hit the accelerator and she started bucking and surging RPM. I drove slowly back to the house and checked my DTC codes and got these codes:
P0263- Powertrain
Cylinder 1 Contribution/Balance
P0336- Powertrain
Crankshaft Sensor A Circuit Range/ Performance
She starts and idles fine. Oil and filter has been changed within 2000 miles. The most recent problem has been blowing off my intake boot after replacing my degas bottle due to a heat crack. I had to pull off my Riff Raff upper intake boot for the first time since I installed them. I just cleaned the boot with Dawn and hot water to remove oil and cleaned the intake with brake cleaner and sprayed a little old lady hairspray on it to keep the boot on. I was contemplating the CCV mod where you add a Racor CCV filter and route the hose back into the turbo intake to keep the oil from saturating the intercooler, pipes and hoses.
Here is my readout at idle after this happened. Note the negative boost...
Just asking in case someone has had the same or similar experience. Researching has not really turned up anything definite. I see everything from “crankshaft sensors don’t go bad” to “replaced the crankshaft sensor and never had another problem”. Just looking for some guidance. I do plan on getting in there and troubleshooting myself but I can’t do that until Wednesday when I start days off. I’m trying to get a gameplan together ahead of time!
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