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Air Flow Meter/Sensor 200 1984

posted by  umpdad on  Wed Apr 3 01:58 CST 2002
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My daughter's 1984 240DL began stalling when trying to accelerate the other day. The car would start and would idle a bit rought at a stop light, but when you attempted to accelerate, it would either stall or begin a what seems like a pop or backfire noise and then either kick in or stall. I spoke to someone who said it sounds like an Air Flow Meter. Could someone confirm this or give any other ideas as to the problem. I believe the Air Flow Meters are an expensive item and if so, I want to tell the techs to look for a used one. Thanks.








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    Air Flow Meter/Sensor 200 1984

    posted by  rhaire on  Wed Apr 3 02:09 CST 2002
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    last visit: Mon Aug 4 10:16 CST 2014
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    Does it idle well? Does it idle well only after you shut off the ignition, unplug the AMM and restart? That would clinch it. There could be other problems though. The Bosch 002 type meters are plentiful and cheap and I suggest buying a used one or looking at cobwebparts. I think he has a few good ones.








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      Air Flow Meter/Sensor 200 1984

      posted by  umpdad on  Wed Apr 3 02:26 CST 2002
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      It idles okay, a bit jumpy but once I shut the ignition off and restart the idle seems a bit better. It dies when I press down on the accelerator. I have not unplugged the AMM - truthfully working on cars not my strongpoint. However, the mechanic I use is very good and trustworthy and if I asked him to look for a used AMM I am sure he would. Should I have him look at the AMM first?








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        Air Flow Meter/Sensor 200 1984

        posted by  rhaire on  Wed Apr 3 02:39 CST 2002
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        I'm not sure it sounds like the AMM. I meant a poor idle would be restored if the AMM was unplugged and that would point at the AMM for sure. It sounds like it might be flooding out and that might mean an ECU problem, traditionally hard to tell from an AMM problem in the B23. Neither component is hard to find, expensive or difficult to change but it would be far better to find a running 83-84 and swap the parts briefly to rule them in or out as defective. And it could be more things than the big two I mention. The thing to avoid is an expensive repair that leaves you right where you started. Not many mechanics have a problem with that course of events though.







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