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Hard change alero headgsket

Olds. alero 2002 3.4lt. eng.wont start 55lb.fuel press. but no fuel in cylinder plugs are dried

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  • Cars & Trucks Master
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First to do is check for 12 volts at the injector plugs with ignition on, if not, check the fuses. Pull the fuses and look at them, this does two things. First it shows you that the fuse is good, second, it will usually get rid of bad connections.. Check this to the ground to the engine or battery. Next would be putting a noid light in the injector plug to see if it flashes. If it doesn't flash and you have 12+ volts at the plug, you have to check for continuity of wires. Between the injectors and the Engine control module, Wire schematics required. If the continuity is good, I would suspect the Module is bad. BUT there are other checks to do first.

Posted on Jul 12, 2013

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Posted on Jan 02, 2017

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SOURCE: 99 OLDS ALERO 2.4 IDLING PROBLEM

intake manifold has a vacum leak or other vacum leak hose etc.

Posted on Dec 03, 2008

  • 321 Answers

SOURCE: 99 olds alero 2.4

I'm sure you have installed a fuel pressure gauge and monitored the fuel pressure while the problem is occurring?Another diagnostic tool which is easy to do,is while the problem is occurring,unplug one sensor at a time beginning with the Mass Air Flow first,.if it uses one.Many times,not always,depending on the sensor,if the sensor is taken out of the picture as far as what the PCM is seeing,like unplugging the MAF,the PCM will substitute the missing sensor output with a generic value that will allow the engine to at least run,and if unplugging for example the MAF,the engine idle speed returns to normal,you know you're onto the problem.You didn't mention if the engine ran ok other than the idle problem.As far as checking for vacuum leaks,i use something like brake cleaner or WD 40,more of a liquid,and it does sound like a vacuum leak.Plastic intake manifolds do develop nearly invisible cracks that open up more with heat.Revsisit the possibility.And as for the PCM,it is possible,but more likely a mechanical problem.Lastly,remove an O2 sensor or two before the catalytic convertor,run the engine and see if anything changes.Cheap way to verify the catalytic convertor is flowing and not restricting engine airflow,as i have seen bad cats cause misfire codes and strange problems.Good luck.

Posted on Dec 04, 2008

csmock132
  • 4669 Answers

SOURCE: 2000 Alero Security light flashing and wont start

With the new lock cylinder in it, turn the key on. The security light should blink. Leave the key on for 10 minutes, the security light will quit blinking and go out after 10 min. This will reprogram your security system and the car should start. Also leave a battery charger on it while the key is on, If the battery goes dead during the 10 minute reprogram sequence, you will have to start over again.

Posted on Mar 08, 2009

  • 1 Answer

SOURCE: 2003 OLDS ALERO WONT START

Check to make sure the Security light in dash on right hand corner is not on. If it is on , your passlock is enabled. to dissable it turn your key on but not start it and wait for apx 10-15 minutes. this should re-set it.

Posted on Apr 15, 2009

  • 407 Answers

SOURCE: no start

sounds like the ignition module

Posted on May 08, 2009

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2004 olds alero. new fuel filter and plugs. still wont start.


Did you check for spark at any ot the spark plug wires/ coils? If there is, check for fuel pressure at the fuel rail. Take the port cap off and connect a fuel pressure gauge. If one is not available, with a pocket screw driver deppress valve at port and observe if fuel pours out. If no fuel comes out at all, check your fuel pump circuit. Check for good ground and power at fuel pump connector. If power/ground are ok, replace fuel pump. If spark and good fuel pressure is present, there is the possibility of engine mechanical issues(jumped) timing chain). Also, a plugged catalitic wont let engine start but its very unlikely thats your problem. Start with your basics: spark, fuel, engine mechanical and catalitic.

Feb 07, 2016 | 2004 Oldsmobile Alero

1 Answer

Oldsmobile alero having a hard time starting


You need to fix the fuel leak 1st. Is it leaking froma hose clamp? if the fuel is spuing out & not makeing it to the cylinders it will missfire. Another possibility is fuel pressure regulator blocked flooding the motor (is the fuel spilling into the intake tube or external?

Jun 28, 2012 | 2004 Oldsmobile Alero

1 Answer

Changed plugs and wires on a 2001 Olds Alero 6 cylinder now it will not start


  • First port of business is check your firing order. See diagram below.


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  • Hope this helps.

Nov 27, 2011 | 2001 Oldsmobile Alero

1 Answer

I have a 2000 Olds Alero that will not start, i have changed the oil, oil filter, spark plugs, wire set, alternator, belt, battery, fuel filter, o2 sensor, crankshaft sensor but my vehicle still will not...


I see you have changed many parts on vehicle, the only other thing that comes to mind is the timing belt. but that depends if its a four or 6 cylinder. some fours have the timing belt as to the chain. and also make sure you are getting spark from coils. but check the belt first. and make sure fuel pump is ok !! have a good day !!

Jun 07, 2011 | 2000 Oldsmobile Alero

1 Answer

HOW DO YOU CHANGE A LEAKING FROST PLUG IN A 1999 OLDS ALERO. V6


CORE PLUGS HARD TO REACH THEY ARE ON SIDE OF CYLINDER BLOCK.ENGINE HAS TO BE REMOVED BEFORE YOU CAN REACH REPLACE CORE PLUG.TO CHANGE CORE PLUG YOU CAN USE A HAMMER AND A LARGE PUNCH.KNOCK CORE PLUG SIDEWAYS IN BORE.PULL CORE PLUG OUT WITH PLIERS.WHEN INSTALLING NEW CORE PLUG IN BORE.MAKE SURE INSIDE BORE CLEAN FREE FROM RUST.USE SCOTCH BRITE INSIDE BORE.ROTATE SCOTCH CLOCK WISE POSITION TO REMOVE RUST INSIDE BORE BE CAREFUL DONT DAMAGE SCRATCH INSIDE THE BORE.THEN CLEAN INSIDE BORE WITH ACETONE.REMOVE RUST AND GRIME.WHEN YOU SEE CLEAN DRY METAL SURFACE.COAT THE SEALING SURFACE OF CORE PLUG WITH A NON HARDENING SEALANT LIKE PERMATEX NUMBER 2 .DRIVE NEW CORE PLUG IN PLACE WITH A LARGE 1/2 INCH SOCKET AND 1/2 INCH EXTENSION IF YOU DONT HAVE A DRIVER SET.YOU ARE DONE.

Feb 18, 2011 | 1999 Oldsmobile Alero

1 Answer

I have a 2000 hyundai elantra that does not want to start. When starting the engine the car acts like it wants to start then dies. I have fire at the spark plugs, I do hear the fuel pump running, all my...


engine might be flooded remove spark plugs to see if they are wet with fuel pull fuel pump fuse crank eng over with plugs removssed to push fuel from cylinders dry plugs reinstall hold gas pedal to the floor while cranking untill engine starts

Dec 27, 2010 | 2000 Hyundai Elantra

1 Answer

2004 Alero...Car will not start now. Changed fuel filter and made sure I have gas to the motor. I chacked the codes and have 1 saying a misfire in all cylinders. Checked for spark and found I have spark in...


did you check the ICM (ignition control module) that's what the coil pack sits on. Inspect if for wire damage and you can remove the ICM and have it tested at Auto Zone or Parts Source free of charge.
Thank you for using FIxya and good luck

Mar 26, 2010 | 2004 Oldsmobile Alero

1 Answer

Hard starting and dies at times while driving.


ignition coil pack it intermitten.

also check the crank sensor and the main crank pulley, this is where the engine gets its firing orders from

Jun 23, 2009 | 2001 Oldsmobile Alero

1 Answer

2003 OLDS ALERO WONT START


find the buzzing noise...likely its the fuel pump relay.

May 28, 2009 | 2003 Oldsmobile Alero

3 Answers

99 olds alero 2.4


I'm sure you have installed a fuel pressure gauge and monitored the fuel pressure while the problem is occurring?Another diagnostic tool which is easy to do,is while the problem is occurring,unplug one sensor at a time beginning with the Mass Air Flow first,.if it uses one.Many times,not always,depending on the sensor,if the sensor is taken out of the picture as far as what the PCM is seeing,like unplugging the MAF,the PCM will substitute the missing sensor output with a generic value that will allow the engine to at least run,and if unplugging for example the MAF,the engine idle speed returns to normal,you know you're onto the problem.You didn't mention if the engine ran ok other than the idle problem.As far as checking for vacuum leaks,i use something like brake cleaner or WD 40,more of a liquid,and it does sound like a vacuum leak.Plastic intake manifolds do develop nearly invisible cracks that open up more with heat.Revsisit the possibility.And as for the PCM,it is possible,but more likely a mechanical problem.Lastly,remove an O2 sensor or two before the catalytic convertor,run the engine and see if anything changes.Cheap way to verify the catalytic convertor is flowing and not restricting engine airflow,as i have seen bad cats cause misfire codes and strange problems.Good luck.

Dec 03, 2008 | 1999 Oldsmobile Alero

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