Question about 2000 Mazda 626

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2000 mazda 626 long crank time at times starts fine others have checked no spark when cranking soon as plugs fire engine starts injectors are pulsing

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

thutson66
  • 96 Answers

SOURCE: 2001 mazda protege will not start

well, with all that you have changed the only two possible things that are left PCM and the ECM....

Do you have an alarm system on this vehicle? If you purchased this car second hand it may have something that is inhibiting the engine from firing. From what you have told us here that would be where I would start looking.

I really hope this is helpfull

Posted on Aug 10, 2008

  • 142 Answers

SOURCE: 1991 oldsmobile cutlass supreme

Check for fuses/power/ground to the engine computer (or injector drive computer) whatever the case is.

Spark, fuel pump, and starter all are independant of the fuel injection computer.

Either the computer itself has gone bad, or it is not receiving power or ground, or wiring to the injectors might be bad...

Posted on Aug 28, 2008

jmpienaar1
  • 5 Answers

SOURCE: 1998 mazda capella.injector pulse no spark. 4 cyl

Sherylpuha,

Have you checked the coil from where the spark comes from and the computer sensor fuse block?

Posted on Oct 18, 2008

MNfisherman
  • 11896 Answers

SOURCE: 98 Mazda 626 Won't Crank, Won't Jumpstart, no power on anything

Either one of your cables isn't getting a good enought contact on the battery or solenoid, or the solenoid is bad, or relay for starter is bad.

Posted on Jan 29, 2009

  • 16 Answers

SOURCE: 2002 Hyundai Elantra not starting

check fuel pump

Posted on Mar 14, 2009

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3 Answers

98 ford f 150 cranks but won't start


May be the fuel cut off switch under the kickpanel

Apr 05, 2017 | Ford Cars & Trucks

1 Answer

Do the crank sensor operate the fuel injectors?


Not directly no. The crank position sensor tells the cars computer, ECU, where the engine rotation is, and the ECU pulses the injectors at the right time, then fires the spark plugs at the right time.

The crank position sensor is mounted in various locations by different manufacturers. In my Camry it is on the distributor shaft ! In your car it could be on the crankshaft nose or in some other place.
.

Jan 02, 2017 | Cars & Trucks

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My 2000 Pontiac grand prix stop running the other day. It turns over just fine but it won't fire up could it be anything other than the fuel pump. ( I really don't want to change that)


its pretty simple to check for fuel pressure. If there is no fuel pressure than the next step is to check for power and ground at the pump. if those check out then a new fuel pump should fix the problem.

your engine needs 3 things to run. fuel, spark, and compression. if you have fuel pressure than check for spark. if there is no spark than there could an issue with a crank or cam sensor. If the crank sensor is bad than typically there will be no injector pulse as well. after cranking it over a couple times pull a plug and see if it is wet. if it is you know the crank sensor is working and the fuel pump is working and you have a spark issue. If it is dry than there is a fuel delivery issue (fuel pump/injector/injector pulse/etc.)

there are many things you can check very easily to help narrow down the possibilities.

Aug 15, 2015 | Pontiac Cars & Trucks

2 Answers

Xterra won't start,running fine on way to work,2 hours later it cranks fine but won't start


What is model year? If it cranks good but won't start, have a helper crank it while you visually check for spark at the spark plugs. If spark everywhere, check proper fuel pressure. Also, check fuel injector pulse, engine cranking.

I realize some vehicles have coil on plug ignition that makes it a little more awkward to visually check for spark, but, the diagnostics still applies. As far as checking fuel pressure, some fuel rails have no Schrader valve, so it's a little more awkward to check fuel pressure, even so, the diagnostic tests still applies.

Can you check applicable trouble codes? When problem is ongoing, can you check for rpm signal?

Jun 15, 2015 | Nissan Xterra Cars & Trucks

1 Answer

Car cranks but will not start


This could go several ways #1 engine mechanical check cranking compression should have 125 psi or greater in all cylinders if low but even squirt oil (1/2 oz.) in 1 cylinder and retest goes higher then rings sealing has been lost. if uneven check timing belt for jumped or misalignment. #2 electrical does it have electrical spark to plugs crank engine with a spark plug connected to spark plug wire laying plug on engine can you see spark? No test ignition coil wires with a logic probe both terminals will be red with key on one will flash red/green when engine cranking does not the primary ignition needs repair Ignition module? or pick-up coil/ crank sensor. #3 fuel system pressure and injection pulse. injection pulse can be tested with logic probe DONOT USE A TEST LIGHT YOU CAN RUIN THE ECU .

Mar 21, 2014 | 1998 Mazda 626

1 Answer

My mazda 626 will crank over but will not start i think someone took a fuse out


check if the car is firing by pulling an ht lead off the plugs and put another spark plug on the ht and earth the spark plug if it has spark when cranking if it is there check the fuel system if the fuel is getting to the injectors.

Jan 23, 2013 | 1998 Mazda 626

1 Answer

02 Mitsubishi Galant, changed igniton but now wont start


There is no simple answer, there are to many variables. If you have access to a scan tool, pulling the codes should help. Without them its back to old school hunt and peck method. At this point we need to narrow down the problem. You need to test for spark.
  1. Tag and disconnect the spark plug wires from the spark plugs.
  2. Remove the spark plugs and install the spark plug wires to each spark plug.
  3. Ground (do not hold spark plug) the spark plug; check if spark occurs while engine is being cranked.
Crank the engine for no more than 2 seconds at a time to prevent flooding the engine with gasoline.
If you have spark, You will want to make sure you have fuel injector pulse, along with fuel pressure. If you have spark ..simply spray some starting fluid in through the air filter and hold the gas pedal to the floor and crank it over while spraying. If it fires up, you know it is fuel related( fuel pump, regulator, or ECM if no injector pulse) . If you have no spark then look at ignition coil connection and trace through to the distributor( if equipped ). The crank shaft sensor has a tendency to fail on these as well. This should give you a few things to test and check to start you on your way to narrowing it down. If you have no spark then look at ignition coil connection for power and trace through to the distributor( if equipped ). If it is DIS( no distributor). It may be the Crank sensor or the ECU. The crank shaft sensor has a tendency to fail on these as well.
The ECU uses the signal sent from the Crank sensor to trigger the spark and fuel injectors. ( make certain you have checked all fuses)

Jul 01, 2010 | 2002 Mitsubishi Galant

2 Answers

Cylinder not firing


Next step would be to check the compression in that cylinder and compare it to the others.

Oct 04, 2009 | 1997 Mazda 626

1 Answer

NO start


Make sure you are getting gas and spark, they are a few ground wires that come off of injector harness that if they are not grounded will cause injector NOT to pulse re-check wiring and get back to me. Good Luck

Dec 11, 2008 | 1989 Mazda 626

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