Question about 1999 Daewoo Nubira

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DO NOT START

ENGINE JUST CRANKING BUT DO NOT START,CHECKED FUEL PUMP AND WIRING,FOUND ONE RED WIRE HANGING LOOSE CLOSE TO ALTENATOR BUT CANNOT FIND PLACE TO FIT

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  • thys theron Aug 20, 2008

    cannot find a place to fit onback of altenator if can get a photo of altenator would be able to see if something missing

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It should go to the back of the alternaator if the car wont start look into a crankshaft positioning sensor

Posted on Aug 20, 2008

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Hi I am working on my 1993 cadillac seville sls 4.9l engine. It will not start


Wow... Thats a lot of parts replacement for what may be a simple problem. The vehicle needs fuel and spark to start ( along with air and compression ).Is there spark from one or more spark plug wires when one is disconnected and held over a grounding point while the engine is cranked over? Is there fuel supply? Pressure to the fuel rail tested? Check the basics before you invest tons of money in an older vehicle

Nov 29, 2015 | Cadillac Cars & Trucks

2 Answers

Could I run a electric fuel pump on my 1998 Cadillac deville?


if it did not have an electric fuel before then the installation of an electric pump is a relatively easy process. If you have an electric pump already fitted but it has failed then remove it and install the new pump in its place. Take care to check all wires, fuses and relays and any pressure sensors for correct operation. Remove and blank of the opening for any mechanical pump on the engine
For new installation select an easily accessible place under the vehicle that can be protected from flying rocks and road debris. Run a power wire (red colour) from the run side of the ignition switch to the relay ( to be fitted ) near the battery or in the engine bay. Run this wire through an inline fuse close to the ignition switch to protect the circuit. attach to a coil actuation terminal of the relay.( look at the base of the relay for terminal identification. Run a black wire from the other side of the coil actuation pin on the relay to earth. Normally the same bolt that mounts the relay. Run a red wire capable of carrying 20 amps directly from the battery terminal through an inline fuse ( close to the terminal) to a power pin on the relay. Run another red wire from the outlet power pin on the relay to the electric pump. . Run an earth wire from the pump to earth.
This is a basic electric circuit for the installation of the pump. If there is a requirement for a pressure regulator or pressure sensor to control the pressure or pump operation , that control wire will be connected in series into the wire from the ignition switch so that when the pressure is reached then it breaks the circuit to the relay from the ign. switch and the pump will stop operation until the circuit is again completed. When the ignition switch is off there will be no power for the pump

Oct 09, 2014 | 1998 Cadillac DeVille

1 Answer

I have no fuel pressure where do i start to find the problem


Okay, hey, the fuel pump circuit. With key on, the pump should turn on for about two seconds to put pressure in the line and in the fuel rail on the engine, where the fuel injectors are. When the engine is cranking, the pump is turned on again by the vcm (Vehicle Control Module-the engine computer) signaling the fuel pump relay, just as it did with key on. After the engine is running, the pump is kept on, usually by the oil pressure switch.
No fuel pressure? Then the pump is not turning on, or the fuel filter is completely blocked-which is rare.


You can start at the Underhood Fuse Block. Here is found the fuel pump relay and the fuse for the pump. The fuse is designated ECM-B Fuse and it's 20 amp. If the fuse is good, put your finger on the fuel pump relay. Now have a helper turn the key to on, not start. If the circuit is good to this point, you should feel movement- a slight click. If you feel nothing, and the fuse is good, then the VCM is not sending a signal to the relay OR there is a wiring problem from one side of the relay to ground. If no click or movement under your finger-you will need professional help to diagnose further-checking of the signal from VCM and/or checking the ground wire for that side of the relay.
If you definitely feel a click at the pump relay, and the fuse is good, the power to the pump is sent out from there on a gray wire. Get under the vehicle at the rear and find the electrical connector for the gas tank, and pull it apart. Now you need a test light or voltmeter to check for power on the gray wire in the connector. You might miss the two second signal with key on, so have your helper hold the key in start. While the engine is cranking, the gray wire should have power-battery voltage. If it does not, big problem: possibly a broken wire or short from pump relay to there at the gas tank.

If the gray wire has power with engine cranking, you're almost home: Either the pump has definitely failed OR the ground for the fuel pump is bad. The ground wire is black and it shares the same ground point as your rear exterior lights, so if the lights work, the ground can be assumed to be good also for the fuel pump. And then you need a new fuel pump. But check the gas tank connector carefully for any sign of corrosion, loose terminals, anything like that amiss. Not likely, but check anyway-you don't want to put in a new pump and then find a loose connection! Good luck.

May 05, 2014 | 1999 Chevrolet Blazer

2 Answers

I have a 2002 ford explorer 4x4 eddie bauer edition. i recently had the alternator changed and the next day it wont start. cranks just fine just wont fire. hubby is trying to tell me its the starter i say...


Taurus or Explorer? if it cranks, its not the starter.(obviosly) check fuel pressure first. If no pressure, be sure you have power at THE FUEL PUMP INERTIA SWITCH. its in the rf kick panel. be sure its not tripped, push in the red button and see if it starts. there are 2 wires, make sure power goes in and out.(both should be HOT, when cranking) If so, the pump is bad.

Sep 08, 2011 | 2000 Ford Taurus

1 Answer

How do i change the fuel filter in my gmc sierra 3500 diesel 6.5 and whear is located??


FUEL FILTER MOUNTED ON A BRACKET TO THE REAR OF THE INTAKE MANIFOLD.TO REMOVE FUEL FILTER.TURN OFF IGNITION.RELEASE ANY PRESSURE OR VACUUM IN THE TANK.DRAIN THE FUEL FROM THE FUEL FILTER BY OPENING BOTH THE AIR BLEED AND THE WATER DRAIN VALVE ALLOWING THE FUEL TO DRAIN INTO A SUITABLE CONTAIMER.UNSTRAP BOTH BAIL WIRES WITH A SUITABLE TOOL AND REMOVE THE FILTER.INSTALLING THE NEW FILTER ENSURE THAT BOTH FILTER MOUNTING PLATE FITTINGS ARE CLEAR OF DIRT.SNAP THE FILTER INTO PLACE WITH THE BAIL WIRES.CLOSE THE WATER DRAIN VALVE AND OPEN THE AIR BLEED VALVE.CONNECT A 1/8 INCH I.D HOSE TO THE AIR BLEED PORT AND PLACE THE OTHER END INTO A SUITABLE CONTAINER.DISCONNECT THE FUEL INJECTION PUMP SHUTDOWN SOLENOID WIRE.CRANK THE ENGINE FOR 10 - 15 SECONDS THEN WAIT 1 MINUTE FOR THE STARTER MOTOR TO COOL.REPEAT UNTIL CLEAR FUEL IS OBSERVED COMING FROM THE AIR BLEED.IF ENGINE IS TO BE CRANKED OR STARTED WITH THE AIR CLEANER REMOVED CARE MUST BE TAKEN TO PREVENT DIRT FROM BEING PULLED INTO THE AIR INLET MANIFOLD WHICH COULD RESULT IN ENGINE DAMAGE.CLOSE THE AIR BLEED VALVE RECONNECT THE INJECTION PUMP SOLENOID WIRE AND REPLACE THE FUEL TANK CAP.START THE ENGINE ALLOW IT TO IDLE FOR 5 MINUTES AND CHECK THE FUEL FILTER FOR LEAKS.

Oct 23, 2010 | 1993 GMC Sierra C3500

1 Answer

1989 toyota land cruiser.driving on highway engine died.turns over good but wont start.has a full tank of gas.put in new battery and altenator a few weeks ago,been running fine.checked the fuses and found...


Hi.

Re:new battery and altenator
If engine turns over battery and altenator are OK.

Re:checked the fuses and found a few were blown.
Effectively those may be symptoms of a wiring problem. If a job had been carried recently, undoing and re-connecting the wires to access the part(eg. alternator) may have contributed to the problem.

Check all fuses, with attention to fuel pump fuse. Check the connectors to fuel pump, eventually read volts at pump and nsure that fuel is circulating
Check air intake and connectors to air intake sensors (MAF sensor), check connection to crank sensor and O2 sensors.

The blown fuses may also have been incidental. If you did not find anything, troubleshooting must proceed as usual, checking distribution, fuel pressure, and then factors that can affect the ignition.

Remember that after a prolonged and failed attempt to crank the vehicle, the cylinders will be flooded and the car will no start (wet plugs- no spark).

Check if there is spark on all cylinders. This can be done removing one by one the spark plugs wires and putting them near to the engine block while someone else try cranking. You will see the spark.
If there is no spark, then you have a coil/distribution problem. test coil by reading volts in and impedance (coil must not be open). I think this engine is not distributorless. Check distributor cap and wires. If you have disconnected spark plug wires after the problem, also ensure that wires are connected in right order.

Once you are sure that there is spark, check fuel delivery and engine control. This part will take longer.

I uploaded here engine control diagrams and other documents that may help.

Regards.

Sep 08, 2010 | 1989 Toyota Land Cruiser

2 Answers

2001 expedition cranks but wont start


check your crankshaft position sensor

Mar 21, 2010 | 2000 Ford Expedition

3 Answers

"Cranks, but won't start". Replaced fuel pump, CKP, ICM & nothing


If the engine cranks over normally when you attempt to start you car, but the engine does not start, the problem may be NO FUEL, NO SPARK or NO COMPRESSION. The engine needs adequate fuel pressure, a properly timed spark and normal compression to start.


1) To find why the engine won't start, remove the air inlet tube from the throttle body, push the throttle open and spray a small amount of aerosol starting fluid into the engine. Crank the engine. If it has spark and compression but NO FUEL, it will start and run a few seconds before dying. If it does NOT start, it probably has NO SPARK.

2)Another method to check for spark is to pull a spark plug wire off of a spark plug (if it has plug wires, coil-on-plug ignitions do not) and place the open end of the plug wire near a metal surface on the engine. Have a helper crank the engine while you watch for a spark. DO NOT hold the wire while doing this as it can shock you. If you see a spark, the problem is not spark, but most likely NO FUEL or NO COMPRESSION. If you do not see a spark, the problem is in the IGNITION CIRCUIT.

3)Proper fuel pressure is critical for fuel injected engines to start and run. You should hear the fuel pump inside the fuel tank buzz for a couple of seconds when the ignition is turned on (no buzz means the pump is not running and the engine is not getting fuel). You can smell the tailpipe for gasoline vapors after cranking the engine. If you smell gas, the problem is likely not fuel but NO SPARK. You can also remove the plastic cap and press the schraeder valve test fitting on the fuel rail to see if there is any fuel pressure to the engine (not a very accurate test because fuel pressure must be at a certain level for the engine to start, for that you need a gauge). Even so, no fuel at the fuel rail would tell you fuel is not getting to the engine..

Aug 27, 2009 | Chevrolet Camaro Cars & Trucks

3 Answers

1987 Volkswagen Golf - fuel pump relay


check for burnt connections where the relay fits in place.and check for 12 volt to one side of small pins with engine cranking and check for earth to the other small pin at fuel pump relay.

Oct 15, 2008 | 1987 Volkswagen Golf

5 Answers

1996 jeep grand cherokee fuel pump


check to see if the ground is loose. also there is a fuel pump rely under the hood on the passanger side of the engine compartment inside the power distribution center. hope this helps some if not i have wiring diagram.

May 22, 2008 | 1996 Jeep Grand Cherokee

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