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1-17 of 18 Results
  1. Driveline, Performance, Tuning
    2002 330ci w/ a 2005 330i sedan engine Thinking of deleting my SAP and eventually installing catless headers, but not just yet because I have a few problems to address. Has anyone deleted their SAP and kept their stock exhaust manifold. If so, can I delete my SAP without a tune?
  2. E46 General
    Does anyone know why are there three different check valves in secondary air pump system? One way valve (black and white), relay injection valve (back of intake manifold) and the one by the pump itself. Another question is where does it inject air? Intake manifold? Or exhaust? Just curious...
  3. E46 General
    Ive been battling to get my car smogged for about a month now. I replaced all the o2 sensors, replaced the dm-tl pump and got that all sorted out. And now, after replacing those 2 things and clearing the monitors and codes, I can get all monitors to set, other than the secondary air pump...
  4. E46 General
    My SAP monitor will not ready for smog. I have: Replaced ALL o2 sensors Replaced ALL hoses involved with SAP system Tested functionality of SAP and check valve Flashed ECU cleared codes multiple times Cold started multiple times and idled for ~ 3-5 min each time checked all fuses including o2...
  5. E46 General
    Hey y’all. i’ve been trying to get my secondary air pump monitor to ready for smog. I have tested all aspects of the system, and everything works fine. I think the problem is that the test never actually runs. I don’t have an ambient air temp sensor currently. my temp reads -40 at all times. I...
  6. E46 General
    Hi, I’m new here and needed some help about an issue that has been bugging me for a while. I have a 2001 325ci and it won’t pass smog because of a secondary air pump issue. No matter how many times I reset the codes, try to drive it calm or change parts it won’t ready up. I even flashed the ecu...
  7. E46 General
    Can a reduced diameter SAP vacuum line cause insufficient airflow codes P0491 and P0492? Over the past few months I have been battling codes P0491 and P0492. I have replaced my SAP pump, SAP valve, and the large diameter hose that runs between them. I have the "simplified" SAP system with all...
  8. E46 General
    Hi everyone, I took my baby home from my dad's house, approx 20-40 mins away from my house I parked in my garage and switched the engine off and had a panic attack because i started hearing a loud hissing air leak (like a tire flattening) that i was unsure about, and it wouldn't stop, knowing...
  9. E46 General
    Okay so for the past two months I've been struggling to find what is causing my secondary air pump codes. I have replaced the vacuum line that runs from the check valve to the plastic line. That did nothing. I have tried the sea foam trick where you pour sea foam into the hose off the secondary...
  10. E46 General
    Hi all, My lovely e46 touring (early 2000) has developed a low grumble on startup that lasts for a minute of so. My initial thought was secondary air filter pump...and indeed if I open up the top a little the noise changes and appears to be coming from that process. However, unplugging the pump...
  11. E46 General
    Hello everyone, I am stuck on a dilemma with my 2001 325i. The damn Secondary Airpump monitor is not setting. Here is what I have done; got all the vacuum leaks fixed, new oem MAF sensor, my mechanic inspected all of the SAP components to see what was failing and everything checked out fine...
  12. E46 General
    My car has developed a problem where on a cold start the engine will idle around 1100 RPM before slowly dropping to around 1000 and then after a few minutes to the normal idle. When the engine's warm it idles normally and I've scanned it but it's not giving any fault codes. :thumbdwn: Here's a...
  13. E46 General
    If I were to build air pump simulator with pcba and populated board with wiring and electronics box how many of you would want one and how much would you be willing to pay? Thinking of making a batch would like to see if their is any interest first:thanks:
  14. E46 General
    Happy New Year's eve...I am R&Ring my valve cover gasket and I broke the vacuum hose to the secondary air pump. :facepalm: Of course, I assume all the local auto parts stores are closed tomorrow (New Year's Day). Any chance someone online has 6" or so of vacuum hose that they could give me...
  15. E46 General
    This is my first post to this forum and I apologize if it is misplaced. I have looked everywhere on the forums and cannot find what is causing my Check Engine Light. about 4 months ago I got a P1421 code from the car's computer. It was still cold here in the north and I figured I would wait...
  16. E46 General
    Just a random thought I had today, if someone were to be able to manually engage the secondary air pump, would that "lean" out the emissions if the smog test was done on a dyno rather than simply reading the OBD?
  17. E46 General
    So, my secondary air pump needs to be replaced. In the mornings and after being off for more than a few hours it makes a high pitched whining for about a minute and a half and then winds down and turns off. (if anyone believes this isn't the secondary air pump I'd love to hear it.) My question...
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