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2003 sentra spec v no spark fuel pump not priming fuel relay clicking

Replaced battery, crank position sensor, checked plugs, diagnostic tool says fault in communication with vehicle ecu, the vehicle is armed with the system, this system is an electical control system the diagnostic connector ok,

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There are many posible things. but the most common failure when you don't have link. you must repair or change the computer ( ecu, ecm,pcm ).
if you change it you may have to reprogram it with your car serial number.

Posted on Jan 14, 2015

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I've checked relays and fusses have hot battery lights work horn and still want hit or start up I have checked the fuel tube and have high presser there checked spark on all 4 plugs


Do you have any warning lights?
A faulty camshaft or crankshaft position sensor can cause this problem.

Don't just go and replace sensors - get somebody to do a diagnostic check first

Jan 22, 2016 | 2007 Hyundai Tiburon

2 Answers

I have a 2003 Saab 9-3 Turbo convertible, I have replaced the coil pack, the battery, starter, fuel pump, crankshaft position sensor, spark plugs & more, the engine cranks like nobodys busines


did you check for voltage at the coil pack low tension input
this comes from the electronic ignition and the distributer dc setting on a multimeter

check inside the distributer that the little magnet is still in place on the rotor and that the sensor is outputing pulses as it turns over
{you can use a meter set to AC range for this ...}
pull a plug out and place its metal to ground check for actual sparks
if this is there then its fuel ...

Dec 05, 2014 | 2003 Saab 9-3

1 Answer

I have a 2003 nissan sentra spec-v it was working fine, i parked it, went to crank it a lil while later an it wouldnt start. ivechecked all the basics, starter, fuses and nothing. its almost like the...


MIGHT BE A RELAY ! LOCATED UNDER HOOD, YOU SHOULD SEE RELAY BOX NEXT TO BATTERY. MAKE SURE BATTERY TERMINALS ARE CLEANED, PUT SOME VASOLINE ON TERMINALS, RECONNECT, TIGHTEN. CHECK ALL GROUND WIRES. ARELAY BOX MAY ALSO BE LOCATED NEXT TO POWER STEERING . COULD HAVE A FAULTY SOLONOID@ STARTER, IGNITION SWITCH COULD ALSO BE FAULTY, ITS NEVER EASY TO PINPOINT ELECTRICAL PROBLEMS, PROCESS OF ALIMINATION, CHECK ALL STARTING CIRCUIT SYSTEMS, IS YOUR SHIFT LEVER ALL THE WAY IN PARK ? DOES ENGINE CRANK ? OR DEAD, NO POWER ? ARE YOU GETTING SPARK ? HOW ABOUT FUEL ? DID YOU REPLACE BOTH THE AIR &FUEL FILTERS ? THE STARTER / SOLONOID IS WHAT CRANKS THE ENGINE, I THINK YOUR PROBLEM IS THERE ! REPLACE RELAY TO STARTING SYSTEM, ARE YOUR SPARK PLUG WIRES NEW ! THEY WILL SHORT OUT ANY SPARK IF OLD, DIRTY, I SUGGEST A TUNEUP, NEW FILTERS, AND REPLACE STARTER/SOLONOID !!!!!!

Mar 16, 2013 | 2003 Nissan Sentra

2 Answers

My 2002 nissan sentra will crank but won't start. i've replace the ecm/ecu, the cam/crank sensor or position, checked the fuel pump/pressure, and it still is doing the same thing. sometimes it


I assume you checked the fuel pressure and it is normal.
Are the spark plugs getting spark when it fails to start ?
Are you getting injector pulse from the computer ?
Any trouble codes stored in the computer ?

Mar 06, 2013 | 2002 Nissan Sentra

1 Answer

Chrysler 3.3l has spark starts on starting fluid but wont start , replaced plugs, cam sensor, crank sensor, feul pump


Your fuel pressure release port is near the ignition coil packs on the fuel rail nearest cabin. Remove Schrader valve with core tool and affix a rubber hose and catch can. Turn key momentarily (Listen for pump) to "On" no starting. Turn key off and check can for fuel. If no pump hum was heard, check pump relay by swapping in another that's there in box ut, not equip. needed for eng. start like A/C. Test again. If you have fuel in the can, know you have spark,compression,and clean throttle path then, I would check/test fuel pressure.Chrysler spec. is 58psi +or- 5psi. If fuel pressure is there but below spec., my experience leads me to believe that the fuel filter above the tank is impacted and requires replacement, a line is kinked,or the jumper line within your new pump asssembly has a loose fit male to female connection and is bypassing fuel or sucking atmosphere at that union point.

Feb 07, 2013 | 2003 Chrysler Town & Country

2 Answers

1994 jeep grand cherokee wont start


The click...click sound is telling you the battery is close to dead or the wires are corroded on the posts. I would put a new battery in and see if that solves your problem or go to a store like Auto-Zone and have them check out your battery and alternator. They also can read your on-board computer which may point you to something else that has failed.

Jul 04, 2017 | 1994 Jeep Grand Cherokee

3 Answers

Engine cranks over but no fuel being pumped plus no power to fuel pump. No spark to the spark plug. I put new crank positioning sensor, new cam sensor, changed computer, checked fuel pump relays. Car...


Did you check your coil pac? This supplys power to all parts of your auto. I would check and see if your getting fire comming from your coil , Good luck to you.

Mar 31, 2011 | 2001 Nissan Sentra

3 Answers

My car is not firing . i replaced the ignition controle module and it's still not firing.


You need to 1st determine if the computer is even trying to start it before you start lobbing parts. Look at the CHECK ENGINE lamp while you crank it. If it stays on bright while cranking, the engine will not get any signal to fire spark or fuel because the computer is not seeing RPM signal while cranking. If the light goes OFF while cranking, the crank signal was seen, however there could still be fuel or spark issues from other causes. You really need to determine if you have spark or fuel as the next step after verifying rpm signal. There are no cheap tricks for most of this work, it takes tools and training to determine the exact cause of failures. Does the ECM communicate? Is the EEC relay functioning, does the fuel pump prime up at Key On? Is there injector pulse? Fuel pressure? 30kv of Spark that is also reaching the plugs?
These are the steps to check to determine how to not buy a wasted part as the next step.

Sep 15, 2009 | 1993 Ford Mustang

1 Answer

I have a no start when key on no check eng. lite on dash no fuel pump noise.when cranked no fuel no spark.hooked scan to diagnostic port cant read connect eror. replace fuel pump fuelpump relay ignition...


it may be your car key
if you key got damage or you change your battery that can cause for the computer not recognizing your key. the is a ship on you car key this is call transponder key. and you are going to need a locksmith or Nissan dealership to reprogram the key on your car computer. here is a link to help you understand this
click here and read all carefully.

Jul 06, 2009 | 2001 Nissan Sentra

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