Question about 1999 Mazda 626

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Shrader valve on a 2001 626 Mazda

My car does not want to start as soon as it warms up. I noticed that the check engine light would come on before this happened, but I would get a code of warming, catalytic converter, I assumed it was an 02 sensor. The car is not running and I canno hear the fuel pump when i turn the key (not starting the car), so I am assuming it's my fuel pump. However, I cannot find where the shrader valve is to check to see if this is indeed the problem. Does anyone know where the shrader valve is located on a 2001 mazda 626 or do I need to check the fuel line?

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  • 13 Answers

There is no shrader valve on the 626 u need to pull the plug on the top of the filter but your problem sounds like a main relay under dash

Posted on Feb 14, 2014

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Posted on Jan 02, 2017

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SOURCE: 2002 MAZDA PROTEGE5 2.0L (manual transmission)

had the same on my girlfriends car. there is a tiny heatshild on the topside above the catalyic converter and there is also a small one on the seperate exhaust pipe (same pipe, but bolted on the headers and to before the cat) where is bends to connect to the headers to the back of the car.

Posted on May 28, 2009

  • 3600 Answers

SOURCE: cranks but won't start fuel pump not coming on

put a small amount of fuel in the intake near the throttle plate then crank and see if it fires, if it does then it's a fuel problem, if it does not fire then pull a plug wire and put a philips head screw driver into the plug wire hold it 1/4 inch away from a good ground then have someone crank it over, you should see spark and it should be blue, if not then you have a ignition problem a bad coil or cam sensor but need to know what you found out on the two tests I told you first to give you a direction to go.

Posted on May 29, 2009

  • 47 Answers

SOURCE: Check Engine light code 1506

this code indicates under-speed error has ocurred.
sets when PCM detects idle speed is 100 RPM lowerthan expected for 14 sec while break pedal depressedand steering wheel is straight ahead.

possible causes: IAC valve failure,intake leak,throttle body failure,opens or shorts in wiring between IAC and PCM.

Posted on Sep 16, 2009

  • 3 Answers

SOURCE: Need to replace 2001 Mazda Protege Oxygen Sensor

The front O2 sensor is located at the bottom of the heat shield just before you get to the exhaust. It has a wire connected to it. You will have access to this from the top of the car.You may need a O2 sensor tool that you can borrow from most major auto parts retailer. Disconnect the battery first then unplug the sensor. Using the O2 socket remove the sensor. The sensor should come with a packet of anti seize, apply it to the threads and install it. Plug the sensor back up and connect the battery and you should be done. Good luck.

Posted on Nov 01, 2009

  • 78 Answers

SOURCE: 2003 Mazda MPV ES that idles very rough when warm

that means could be vacuum leak

Posted on Jan 10, 2010

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"An IAV sometimes may fail, or can become troublesome. This can manifest itself through various problems while driving. Following are a few problems that may be caused by a faulty IAV. A rough running engine can be caused by a faulty IAV. If the valve begins to stick over time, or fails to respond to inputs from the car's computer, it may not properly adjust for engine loads and operating temperatures. If you notice that your car seems to run rough when it starts up, or once it warms up, it may be a good idea to check the IAV.
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Will not start when warm


Why the fuel filter ?

You have no idea how long it has been in the car ?

Have to be there 10 years to be a problem

Check fuel pressure at shrader valve on fuel rail
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So check / listen carefully for vacuum leaks and check the EGR valve.

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