996 Turbo / GT2 Turbo discussion on previous model 2000-2005 Porsche 911 Twin Turbo and 911 GT2.

5th is 6th saga continues Secondary air pump can’t be turned off help

Old Feb 9, 2018 | 04:54 AM
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5th is 6th saga continues Secondary air pump can’t be turned off help

so have the car in shop again gears Are swapped but I’m getting some hesitant driving at freeway speeds while slightly decelerating and it’s a little herky jerky when taking off from a stand still.

One thing at a time but 1st thing car is:
throwing p1411 and 0410 of course
so my mechanic is trying to track down a electrical gremlin in the circuit that runs the pump.

He told me that people in the past have been trying to find this problem cause it’s been poked and prodded all over. Anyway the pump is running constantly. You can pull the fuse/ relay and still it runs. It runs off the power and ground wires.
He showed me this last night. Very freaky.

We were thinking delete it all together and reflash (I don’t have emissions in my county)

or hes gonna play around to see if he can rewire directly from the ecu and reground


can someone connect me with a tuner that retunes to ROW emissions and knows what to block off and where to purchase the parts

i just wanna bag it instead of chasing down a weird *** problem while flushing more money down the toilet

thabks Michael Holland for the great deal. Too notch human being.
 
Old Feb 9, 2018 | 06:46 AM
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pulled the relay from the back seat/bulkhead area and it's still running?
Tony/EPL can do pretty much anything re:tuning/deletions
 
Old Feb 9, 2018 | 06:53 AM
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any pictures of the 'work' done back there?
is it switched power (ie. key on/engine off it runs?), or only when engine is running?
 
Old Feb 9, 2018 | 07:34 AM
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Only when car is running. It powers on like normal but never shuts off. Even when relay and fuse is unplugged. There is power on the power wire of course but also power to the ground.
 
Old Feb 9, 2018 | 10:42 AM
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Sam @ bydesign turned off the secondary O2 sensors and secondary air pump codes in my car when I got my cobb tune from him... no issues.
 
Old Feb 9, 2018 | 10:58 AM
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Before you just delete it I would find out why it's shorting.
 
Old Feb 9, 2018 | 11:08 AM
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Cool thanks!!! Ya I just talked to him. We are gonna do it.
 
Old Feb 9, 2018 | 11:09 AM
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Let me know buddy I’ll send you a map to turn it off at least so you can see if the secondary air stops. But it sounds like some serious Looney Tunes worked on the car before. We will get through it standing by whatever you need pal.
 
Old Feb 9, 2018 | 12:15 PM
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sure you're unplugging the correct relay? what is happening kinda isn't possible if the factory wiring/relays/etc are there (actually just repaired a non-functioning SAI on a 996, dead relay..) ..... unless a separate new harness was made and the relay used is bad/wired wrong and sticking on
If you have Durametric or PIWIS, can you switch on and off the SAI with software?
Originally Posted by uwrasta
Only when car is running. It powers on like normal but never shuts off. Even when relay and fuse is unplugged. There is power on the power wire of course but also power to the ground.
 
Old Feb 9, 2018 | 12:51 PM
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I definitely was able to turn it on and off with my durametric or it seemed that way. But there is definitely juice when you test the red power and the ground going to it. Explanation? Weird.not sure but I can tell there has been a lot of monkeyin around with that system like someone was trying to figure it out but couldn't.
Someone has been pushing a lot of test points into wires in the area?????
 
Old Feb 9, 2018 | 12:55 PM
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I'd be checking for continuity between the SAI pump pins and the relay board... make sure you're dealing with the right relay and that the system doesn't have additional hidden parts/wiring going on
 
Old Feb 12, 2018 | 11:14 AM
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The POWER (red) wire the the SAI pump is wired to the battery directly. No fuse. It will be hot all the time.

The SAI fuse is in the switched ground wire, it's on the rear relay rack. It's the huge 40A fuse. The SAI relay is also in the rear relay rack.

The ECU commands the SAI relay on, which switches ground to the brown/black wire at the SAI pump.

If you probe the wires at the SAI pump with the SAI pump connected and OFF you should find 12V at both wires. If you probe with the SAI unplugged you'll find 12V on the red wire and open circuit on the brown/black, could be any voltage as the wire is floating.

If you unplug the SAI relay or the 40A maxi fuse and the pump runs with the key on there is something REALLY WRONG with the wiring.
 
Old Feb 13, 2018 | 07:03 PM
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Thanks I think we have it figured out!!!
 
Old Feb 15, 2018 | 11:52 AM
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Originally Posted by uwrasta
Thanks I think we have it figured out!!!
Good news.

Was it wired incorrectly?
 
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