Question about 1988 Mazda B2200

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MY TRUCK STARTS AFTER TWO TRIES WITHOUT THE MASS AIRFLOW SENSOR CONNECTED BUT DIES WHEN IT IS PLUGGED IN

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Engine will die when you plug it in while running, Plug it back on, start engine, if it runs the same when you unplug it while the engine is running, bad sensor, replace, if engine wants to die when you unplug it, sensor is good, hope this was very helpful.

Posted on Aug 19, 2010

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Posted on Jan 02, 2017

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Starts cold then pull out it will die un til it gets good and at running temp done replaced pickup and tried coil it looses its voltage ti coil when this happens.


lots of mystery cold start problems that occur with electronic engine controls are attributed to two items , coolant temperature sensor (not the one that displays on dash) and the mass airflow sensor )these use a heated wire to measure airflow so if its dirty then it don't read the right airflow

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My 2002 kia sedona won't idle until warms up, dies when put into gear ...any ideas??


Is the check engine light on? you could have a bad ignition fail sensor, TPS sensor, or bad o2 sensor. it could also be a bad mass air flow sensor or a vacuum leak. without a code to help pin point the problem I'd start by checking those things first. Maybe try unplugging the mass airflow sensor and start it up and see if anything changes.

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There is a switch in the airflow meter that keeps the fuel pump relay closed as long as there is airflow. With the meter unplugged, the pump should not run except when the key is turned to start. It would seem to me that you have a wiring issue. Try jumping the fuel pump relay so the pump runs whenever the key is on. (Remove the relay and jump the pump wire to the accessory wire--see top left diagram.) This defeats the safety feature but will keep the pump running.

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Is the metal flap on Maf sensor on 92 Lexus es300 supposed to move with gas pedal if car is not running? Will a bad maf cause no apart or a no start condition?


No. The metal flap in the mass aiflow sensor is not connected to the throttle control. The air moving through the mass airflow sensor moves the flap. The flap works a variable resistor inside the mass airflow sensor. The more (and faster) the air is that moves through the sensor, the farther the flap will move...that is how it measures how much air is entering the engine....that is what a mass airflow sensor does.

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1 Answer

Car does not run well with mass air flow connected , once electrical connecter remove it runs great, tryed a new mass sensor but still runs poorly . what should i look for ?


You installed a new Mass Airflow sensor and still runs poorly, then it sounds like the computer is messed up (ECU). First try to unhook the negative battery cable for a couple minutes, and plug the new airflow sensor in, reconnect battery terminal and let it run for a couple minutes with the part in. It can reset the ECU.

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1 Answer

I changed my spark plugs and cleaned my mass airflow sensor with maf cleaner. The truck didn't want to start but it finally did. When if did it had a sulfur smell but went away. The truck wouldn't...


When you cleaned your maf sensor did you disconnect your negative battery cable. If you cleaned the maf senor without disconnecting the battery cable there is a chance that you shorted out the sensor. Try unplugging the sensor and see if the truck runs any different. If it does not run any different with the maf sensor unplugged then you will know you found your problem. I hope this helps you out, and good luck

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1 Answer

99 Grand Prix idles funny, dies got code p0102,


this vehicle most likely has a mass air flow sensor it may have got accidently unplugged or the air tube from mass airflow to engine is not connected well or it could be that you have indeed a bad mass air flow sensor they do make a special cleaner that you may want to try before purchasing a mass air flow sensor or purchasing one from salvage yard the symptoms you describe would be created by a bad massair flowsensor

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2 Answers

1988 Nissan Maxima/ Fuel Delivery


It might be the mass air flow sensor

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