Engine wont start

Hi noko1,

Do you mean the fuel pump relay does not have any voltage at terminal # 11? When you turn the key to the on position without cranking the engine over can you hear the fuel pump run in the tank for 5 seconds?

This guide should help us

https://www.2carpros.com/articles/car-cranks-but-wont-start

Please run down this guide and report back.

you righ no volt i am hope it not thi EMC

At the left side of engine compartment in the Battery Junction Box, check the Fuel Pump Fuse ( 20 A ) use a test lamp to check if battery voltage is available. If fuse is bad replace it. If fuse is good and does not have any battery voltage, there is an open between the battery and the fuse, could be a fault with the fuse box or loose connection.

If fuse is good and voltage is not available at the relay, check the Light Blue/Orange wire to fuel pump relay for open circuit.

Note : If power is getting to the relay and coming out, check the inertia Fuel Shut Off Switch, located at lower left rear corner of trunk.

now i have power on fuel pump becose replace CCRM but is it sonthing went i turn iignicion to start carr start shut off so kuit i can keep run it it sonthing go on and off you could hare it like relay and shut me fuel pump back off

Sorry I am having difficulty understanding you and there is nobody around to help me out at the moment.

Hope I get you right.

You mean the engine is quitting after startiing. If the ddash indicators lights are not showing, you could have a faulty ignition switch that is not working at the RUN position.

You need to test if voltage is present at the ignition switch Black/Light Green, Red/Black, Red/ Light Green and Gray/Yellow wire.wire.

I had this problem got a new fuel pump relay ! bam all fixed.

Mustang not starting
-Fuel pump works, but only shoots a pump about 1/4 of what's normal. Force-grounded it, so there's spark and gas at engine, but still won't start.
-New fuel pump relay
-Will discuss further

As a note, we're not sure it's the fuel pump; it could be anything.
Also, my uncle, the one that's helping with the car, has to leave pretty soon here, so after a little while we might not need help anymore.
Thanks

To rule out the fuel pump you must use a fuel pressure tester -start here

I recently replaced my fuel pump and filter. It crank 2 times after. Now it just turns over. no fuel. Reset the switch and still nothing.What could be going wrong? Before i replaced it i had 4 hot wires going to the pump now i only got 3 hot wires going to the pump. checked fuses and relays. Is the anything else i could try?

did you check for a ground? could be bad ground connection

How would i check for a bad ground connection? Thanks John

How many volts does the fuel pump have going to it? a contant 12v?

when you turn ey on it sends 12 volts for 2 seconds as a prime

Okie Dokie.I checked everything out. Got to looking and found the Fuel Pump Driver Module. Replaced it. Got power. But for some odd reason the power going to the fuel pump got hot and started melting. . Unplugged fuel pump and turned the key over and got power to my meter. The wire did not get hot then. There was a naked spot on the power wire in the fuel pump. LOL Thx to me... Could that be grounding out or shorting out In the fuel tank? Thanks John

absolutely. something is wired backwards or arcing out.

My car stalled like it was out of gas when I put gas in it an hour so later is started back up. now its doing it again and this time it won't come on at all. I can no longer hear the
fuel pump when I turn the ignition. do you think this is the fuel pump or relay?

if you ran out of fuel, the pump was damaged and most likely needs to be replaced.

i would have the pressure verified before throwing any parts at it

Roy

Car wont start. Removed the tank and fuel pump.
Purchased a used fuel pump DA oh well niether will work. I have power all the way to the pump.
One black wire and a pink and striped with black wire.
turn key power to both sides. When you start it power loss from the black side pink stays on.
Will not prime will not pump! whats up.
roll over switch seems ok relay??? and is there a programer switch huh?

If inertia switch is OK then inspect fuel pump driver module.

Thanks for using 2CarPros.com!

hooked up autoxray OBD11 no codes . pulled a plug coil wire off verified pulsing volts at 5 to 7, thought maybe gas gauge was off ,added 3 gallons fesh fuel ...same-same turns over all day , no lite -off...if the pump goes out woudnt i get a code showing no fuel delivery...did not notice any noise from tank, but then again never have before either.also did quick reset on car alarm / car computer reset no luck.PLEASE HELP...im an airplane mechanic and most of those systems are easier than a cars

Can you check fuel pressure? If you think it is a fuel issue, check the bump switch. The owners manual says it is in the trunk on the left side, behind the trunk lining.

If that is a two wire connector, back probe the circuits with the engine cranking, both wires should be hot. Let us know what you find.

Were you using a scanner or code reader?

the car has sat for the last 2 months.ran perfect......wouldnt this switch need setting off.....also auto xray handheld used with no codes produced with a complete scan.will ck pwr at switch.12 volts at switch...this has to be the quietest electric pump ive ever NOT heard...will check that pump harness in AM.....should be 12 volts at the connection if so i know the pump has taken a dump.....THANX for the help...i will post what fix was .

You could try reseting the bump switch. Also, I thought that might be the easiest place to start checking for voltage at the rear. Have a helper crank the engine.

If this vehicle has electronic returnless fuel system, there should be a fuel pressure PID on the scanner.

got 12 volts at switch . doesnt look like its tripped...next is the harness for the fuel pump. thers a q/d aft of the tank , i will check for voltage there...any info on pump changes if thats the culprit......internal or external

I wouldn't replace anything, without checking fuel pressure. I asked about that in the first post. My hearing is no good, I can't listen for the pump. I have to check fuel pressure and amp draw for the pump.

I just wanted to add, the voltage and ground for the fuel pump motor comes through the pump driver module. You have to have both voltage and ground or the pump motor won't run. I believe the ground is a duty cycle, switched on and off. If there is something wrong with the system, a code should have set. Whether it will or not is a different story.

have 12 volts at pump disconnect just aft of tank, also fwd rh fuel rail has pressure valve like a valve core of a tire..........no pressure at all........scanned until blue in the face ...........nocodes and scan successful message....no stored codes nothing

My car will not start. We tested the battery, alternator and the starter. We replaced the battery terminals. What else could be the problem

is there a relay for the pump or the sending unit...im buying a book today for sure..........called just to see a shop charge on pump changeout-$700 that aint happening

Pick your symptoms and get back with some testing results

Cranks but no start condition:

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine at least 3/16 away from ground -have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs,coil's resistances,distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it.

If both fuel and spark is present-check the valve and ignition timing, this will lead you to problems
with compression and valves opening and closing at the wrong time/broken or jumped timing
belt/chain.


No crank at all/nothing/nada:

Could be the starter, starter relay, park and neutral switch/clutch switch and ignition switch assuming the battery and connections are good

My 2000 mustang will not start after sitting for a month. It just had a tune up, has a good battery and has gas. What should I do?

All "crank, no start" conditions are approached in the same way. Every engine requires certain functions to be able to run. Some of these functions rely on specific components to work and some components are part of more than one function so it is important to see the whole picture to be able to conclude anything about what may have failed. Also, these functions can ONLY be tested during the failure. Any other time and they will simply test good because the problem isn't present at the moment.
If you approach this in any other way, you are merely guessing and that only serves to replace unnecessary parts and wastes money.



Every engine requires spark, fuel and compression to run. That's what we have to look for.

These are the basics that need to be tested and will give us the info required to isolate a cause.

1) Test for spark at the plug end of the wire using a spark tester. If none found, check for power supply on the + terminal of the coil with the key on.


2) Test for injector pulse using a small bulb called a noid light. If none found, check for power supply at one side of the injector with the key on.


3) Use a fuel pressure gauge to test for correct fuel pressure, also noticing if the pressure holds when key is shut off.

4) If all of these things check good, then you would need to do a complete compression test.

Once you have determined which of these functions has dropped out,
you will know which system is having the problem.

2000 mustang gt - sitting for 3 months. Car will not start, just turn over. In the KOEO position, no sound from the fuel pump and no fuel pressure in at the schrader valve. I am getting 12 volts KOEO across the inertia switch (unplugged inertia switch and measured voltage across the two wires in the connector). Cranking the voltage drops to ~9.5 volts. Is the fuel pump dead or is this an electrical problem?

I had the same exact problem. I have 2000 Mustang GT with 57,000 miles which was parked for 2 months and it will not start. I had it taken to dealer who confirmed dead fuel pump. No pressure in the line.

Had to replace fuel pump.

i was driving myh car all of a sudden there was a loud squelling noise coming from engenie and my oil perssure went all the way in the red to high then the car stalled out and now will not turn over , please help me some one said it may be a fuse the previous owner told me it could be a fuse becuase this has happened before .

Say it won't turn over

Let rule out "seized up"

"key off"

See if you can rotate the engine with a wrench--one full revolution (or more).....put a mark on your harmonic balancer so you will know when you get there

I demonstrate in pic, with my jeep cj 5 engine

The medic

could it be the oil pressure gauge , the first thing that happend was my oil pressure went high then the car stalled i changed oil car started then about 15 minutes later oil gauge jumped up and down and then up and car stalled out now wont turn over at all

Need your info

How 'bout checking your battery voltage w/ a digital voltmeter

The gauge itself is not killing the vehicle

Voltage is a big question here---if it's low, do not jump it off----remove it and recharge the battery out of the vehicle---or replace it w/ a fully charged one

This may also reset your computer (still glitching 'cause battery has not been disconnected) a fully charged one will reset it---then have battery and charging system tested immediately, most auto parts stores will load test and fully test the system for free.

Keep us informed

The medic

my car is a 2000 mustang gt automatic , i bought the car last year and it was running fine , up until the end of october then the oil pressure gauge jumped up to the red and it stalled we came home changed oil and filter again and started the car everything was fine we let the car run and it started to making this sqealling noise and then just shut down the car wont start at all now , some one had told me it could be a fuse issue im not sure im doing all this on my own and i dont know too much about cars im a girl with no males to help me and need my car fixed thank you .