2003 Ram Van Vacuum issues.
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OK scanned van again and came up with 4 codes 1. PO455 EVAP Large Leak Detected 2. PO0132 O2 Circuit High Voltage Bank 1 Sensor 1 3. P1763 Governor pressure sensor voltage to high 4. P0442 Evaporative Emission System Leak Detected (small leak). would the leaks cause the other faults? Has anyone had these before, any ideas on where these leaks happen?
Thanks again.
Thanks again.
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Nope, you have a couple different problems there. The EVAP leaks are likely just rotted hoses. They run under the van, so are exposed to the worst nastiness driving can manage. You will need to inspect them all, end to end. If they feel dry, or they are starting to crack, replace them. (it's just vacuum line after all.) Deal with the large leak first, see if the small leak code goes away.
Plug in your scanner, and see if you can see just what voltage the O2 sensor is reporting. Typical failure mode is to short internally, and replacement solves the issue.
Governor pressure sensor is on the same five volt feed as the O2 sensors, so, think I would address the O2 sensor issue first, clear codes, and see if the pressure sensor code stays gone.
Plug in your scanner, and see if you can see just what voltage the O2 sensor is reporting. Typical failure mode is to short internally, and replacement solves the issue.
Governor pressure sensor is on the same five volt feed as the O2 sensors, so, think I would address the O2 sensor issue first, clear codes, and see if the pressure sensor code stays gone.