Thread: PO410, RCM seems Good, Air Pump works when Jumped ????
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Old 09-06-2015, 08:35 PM
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KDW4Him
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Default Re: PO410, RCM seems Good, Air Pump works when Jumped ????
Originally Posted by 81's
Had bad fuel pump relay and secondary air pump system cel. Sent RCM to DJ to have Fuel Relay and Secondary Air Pump Relay replaced, He resoldered and did horn mod. Looks great. Air Pump will come on if I close the contact on the relay. This is what it did before DJ replaced it. Had guessed bad relay. Seems not. I have checked all visible wires, battery state of charge, ground. Jumper pump off battery, it works fine. While rare, I hoping it is not the PCM. I have 90 days to get this cel fixed before inspection. Any help would be great. This issue may require an expert with the necessary scan tools. I open for suggestions and a road trip.
If you reset the code does it come back immediately?

Mine would throw the code 3-4 times per year. Reset and good to go for a few more weeks. I suspected the one way check valve in the system but never needed to dig very deep because it was so infrequent.
 
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