Question about 1999 Mazda 626

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Where is the fuel pump relay located. Thinking that it has gon bad. the car starts sometime an don't others. When it does not start i don't hear the fuel pump whinning before turning the key on.

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In the main fuse block under the hood behind the battery.


where is the fuel pump relay located. Thinking - 8f93650.jpg2371302.jpg

Posted on Jun 06, 2010

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1 Answer

Truck starts runs for a few minutes then stalls sometimes starts again sometimes wont start


Can either be fuel filter is dirty or fuel pump is going and there may be a short or burnt wire on the fuel relay. they should all be located in the same area.

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05 ford five hundred wont turn over thinking its the fuel pump or maybe the relay


try banging on the fuel tank sometimes that could make the fuel pump work for a bit, you cant 100 percent rule out a bad fuel pump;you may have a better idea if it starts. good luck

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Can you tell me where the crankshaft sensor is located? Would this being bad make it not start sometimes? Sometimes it will start up, other times, not. Sounds like the fuel pump is not running when it...


the crank sensor is behind the crank pulley and must pull off the pulley to gain access to it and it must have the air gap set so the timing slots don`t hit it when the motor is running,this can cause your problem also if the wires rub through by the crank pulley can cause it as well.you say you don`t hear the fuel pump running when it won`t start then you need to make sure that is what is happening as this will cause an intermittent no start(pump works sometimes).do you get a 2 second run pump prime when the key is turned on and a no start then it could be the crank sensor as the computer looks for a crank signal from the crank sensor when trying to start the car.

May 03, 2011 | 2001 Pontiac Grand Am SE

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Car wont start was running fine now just wont start 2000 chrysler concorde. it seems like it wants to fire but not getting fuel or something


i would turn on the ignition while listening under the back of the car and you should hear a buzzing from the fuel pump. if you dont hear it then either your fuel pump is bad or you blew a fuse or sometimes you can trip the fuel safety shut of switch that should be located in owners manuel

Apr 27, 2011 | 2000 Chrysler Concorde

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I replaced fuel pump and relay switch Sometimes when you turn key you can hear relay switch clicking and pump working then truck satarts, Runs fine . Try start it again and it just turns over , there's...


not knowing what kind of vehicle it is it is hard to tell. some gm cars and trucks have oil sending units that will not allow the vehicle to start unless it has oil pressure. they start going out and sometimes they start and sometimes they won"t.

Dec 08, 2010 | GMC Sonoma Cars & Trucks

1 Answer

Sometimes it will start up fine and other times it loses spark completely and wont start. We had to have it towed home once because it wouldn't start then about 6 hours later it started up fine. Our...


How are you diagnosing it looses spark ?
Could be an issue with the Fuel Pump relay or the PATS system

If you get a crank no start, turn the key to the off position. Make sure you can hear the fuel pump run ( in the fuel tank, by the fuel door on the box ) by rolling down the window. Turn the key from off to run and wait to hear the fuel pump cycle. At the same time the theft light in the cluster should go out. Do both of those happen correctly ?

Try swapping the Trailer Tow adapter Reverse relay with the fuel pump relay.
My '01 had cases of crank no start, which I attributed to not holding the speed pass away from the key correctly ( causing PATS to not be completed ) , and at ~ 34K miles the fuel pump relay went out.

Nov 22, 2010 | 2001 Ford F150 Styleside SuperCrew

1 Answer

How do I change the fuel pump on a 2000 Acura TL?


hi, when you turn the ignition on do you hear the fuel pump start up if you do then the pump is fine if how ever you hear nothing then the chances are its going to either be the fuel pump or fuel pump relay, if you have a look in your fuse box you should be able to find the fuel pump relay if you cant locate it then its best you get a manual to show you the relays location, you can then put a finger on the relay and when you turn the ignition on you should feel a little click coming from the relay if you hear this then the pump needs replacing but if you hear or feel nothing then the chances are the relay needs replacing.

you can also check if the pump is working by removing the fuel feed hose from the injector fuel rail then once this is removed you put a tub under it then turn the ignition on if you have fuel shooting out then you know the fuel pump and relay are ok and you need to start thinking of some other problem such as ecu etc,

see what you find then get back to me and ill try and assist you further ok

May 14, 2010 | 2000 Acura TL

3 Answers

Car randomly stalls when i stop or even while i drive


It sounds like your fuel filter is clogged or your fuel pump is going bad. When this happens see if you can hear if your fuel pump is running. Turn the key forward to the run position and listen near the gas tank. you should hear a vibrating sound. If you don't hear it at all the pump of pump relay is bad. If you hear it continually your fuel filter, pressure regulater, or fuel line have problems.

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2 Answers

Wont stay running


Check all things airflow related. The PCV valve, the air cleaner, the mass airflow sensor and any other filters.

Dec 01, 2008 | 2002 GMC Sierra

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