erikv11 Posted February 15, 2013 Report Share Posted February 15, 2013 Chuck should take the video down, that is going to screw up a LOT of people. No video is much better than wrong video. Quote Link to comment Share on other sites More sharing options...
Keaton85 Posted February 15, 2013 Report Share Posted February 15, 2013 I think I PMed him a while back about it but no responds.... Quote Link to comment Share on other sites More sharing options...
Fudge_Brownie Posted February 15, 2013 Report Share Posted February 15, 2013 I just raised the question. Quote Link to comment Share on other sites More sharing options...
KlausC Posted February 18, 2013 Report Share Posted February 18, 2013 Well I soldered in a new diode in my ECU between pins 32 and 37 w/ the band on the diode towards pin 37, bypassed the solenoid w/ a 33ohm resistor, unplugged the air pump and guess what CEL comes right back on w/ P0410 code. If someone can explain how to attach a pic I'll post a pic of the ECU.Any more ideas on this? I just completed the ECU mod, unplugged the air pump, plugged up the vacuum tree and get 410 immediately after engine start. So I checked the resistance at the solenoid and it is 0, nada, zilch. I guess that was my primary problem as the 410 is a code that wasn't present when I bought this junker. I really don't like to cut wires, but if I put a 33ohm resistor between the 2 wires that go to the solenoid, will that fix me up? My soldering skills are shy of 'novice' and I just hope I didn't cook the the diode between pins 32&37. Quote Link to comment Share on other sites More sharing options...
lucien2 Posted February 22, 2013 Report Share Posted February 22, 2013 completed this mod yesterday, thanks! For the first time in a year, no CEL only driven 30 miles so far. Inspection next week Quote Link to comment Share on other sites More sharing options...
RBoy8 Posted February 26, 2013 Report Share Posted February 26, 2013 I have a 98 Volvo S70 T5. My air pump quit working about 4 years ago and I've been getting P0410 Secondary air injection system malfunction. This year, I could no longer pass an etest in Ontario, Canada if the secondary air system showed a fault so I decided to try the air pump delete method. I've soldered an N4005 diode directly into the ECU. After about a month of driving I was able to go all the system to "ready" status and successfully passed the etest yesterday. It appears that the ECU thinks that the air pump is operational. Thanks VolvoSpeed forums for this great write-up. This saved me a lot of trouble. PS. The P0410 code has not come back and no check engine light! Thanks for posting . I was actually just wondering this, as I have the delete done in mine and was concerned about the readiness being set for Ontario's new e-test method. Quote Link to comment Share on other sites More sharing options...
optimus prime Posted March 7, 2013 Report Share Posted March 7, 2013 ok so i just did this three times with my 97 850 glt which is a 4.4 car and its failed all three times. im assuming that must mean that sas solenoid valve is toast? Quote Link to comment Share on other sites More sharing options...
Keaton85 Posted March 7, 2013 Report Share Posted March 7, 2013 Check the resistance on the solenoid and make sure you soldered the correct pins. Is the pump unplugged? Quote Link to comment Share on other sites More sharing options...
optimus prime Posted March 7, 2013 Report Share Posted March 7, 2013 pumps unplugged soldered it right next to my 98s ecu that the mod is working on check the resistance of the solenoid right now but i already ordered the resistor anyway off ebay just curious to see if the the solenoid alone going bad could cause the code. Quote Link to comment Share on other sites More sharing options...
optimus prime Posted March 7, 2013 Report Share Posted March 7, 2013 32.2 ohms Quote Link to comment Share on other sites More sharing options...
Keaton85 Posted March 7, 2013 Report Share Posted March 7, 2013 It's fine Quote Link to comment Share on other sites More sharing options...
optimus prime Posted March 7, 2013 Report Share Posted March 7, 2013 any idea what the issue could be then? maybe a hose that leads up to the solenoid? would that cause the issue? Quote Link to comment Share on other sites More sharing options...
Keaton85 Posted March 7, 2013 Report Share Posted March 7, 2013 Reset the CEL with a scanner? Vacuum hoses don't matter. Quote Link to comment Share on other sites More sharing options...
optimus prime Posted March 7, 2013 Report Share Posted March 7, 2013 i reset with a scanner and it came back i also reset by puling the ecu for a couple seconds. might be worth noting my ecu had no numbers on the white plastic to count the pins.i just counted the pins and did the exact thing i did to the 98 na cars ecu. also the pump is slightly different than the on on the 98 the 97 pump has one blue wire that goes to the connector and the black wire goes straight to ground on a bolt. Quote Link to comment Share on other sites More sharing options...
Keaton85 Posted March 7, 2013 Report Share Posted March 7, 2013 Did you start at 0 when counting? As the first pin is 0 and the second is 1 then so forth? Quote Link to comment Share on other sites More sharing options...
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