It like this the battery supply's the power to the starting motor to crank the engine over that is a good point to start checking .
However the ignition switch opens the circuit like a light switch on your wall open closed.
Now you need to figure out what works when the key switch is in run position do you have major power windows seats door locks if so the battery is fine .If not you need to take a good look at the battery TEST IT if that's good then look at the fuse box any fuse that would stop power flow would a 20 to 30 amps yellow or green the # will be on the back of it
Next you need look at main connections and grounds like from the battery to the starter and solenoid yank on the cable to the starter from the battery check your main ground cables fusible links look for corrosion.
Then you can start thinking about what you need to take APART.
3 will
SOURCE: 1999 Altima will not start, no power to Crank Position Sensor
The crank sensor is only a reference and shouldn't cause it not to start. I would look elsewere for your problem ie camshaft position sensor which is built into the distributor. This is amore likely cause of your no start condition.
SOURCE: My 2000 Ford Expedition has
If it is a single click, the problem lies in the starter solenoid or relay. If it is several clicks in succession, the battery may be low or there may be a loose cable.
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also try this :-- Please make sure the battery is fully charged before doing this test! Also make sure all the connections on the starter, battery and cable ends are tight and clean! this is important!! This won't be fun to test but it will tell you if the starter is good or not. Crawl under the car. (Make sure you use the proper jacks and jack stands!) find the end of the starter (not the end that is attached to the bell housing) and find the solenoid switch. it should have 3 bolts on it. Two large ones and a small one. The top large wire should be the positive battery cable, the bottom large wire should go into the starter and the small wire should be from the ignition switch. Take a wire and hold it to the top large wire on the solenoid. (be careful of the other end of that wire when you have it connected to the top large wire of the solenoid! don't ground this wire. it will turn out badly. take the other end of the wire and touch it to the small bolt on the solenoid end. If the starter is working, the solenoid should engage and the starter will turn. If this happens it is most likely the ignition switch. If the starter doesn't turn, the starter could be bad.
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Starter Relay Test
Place transmission in Park.
Apply parking brake.
Check for battery voltage between starter relay battery terminal and ground.
Connect jumper wire on starter relay between battery and ignition terminals.
If engine does not crank, connect a second jumper wire to starter relay between ground terminal and good ground and repeat test.
If engine cranks in step 3, transmission linkage is misadjusted or neutral safety switch is defective.
If engine does not crank in step 3, starter relay is defective.
Follow this step by step and you will pinpoint the problem.
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This will help. Thanks please keep
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SOURCE: 1993 Plymouth Sundance 2.2L cranks, no start
When you turn the ignition on the pump is energized for 2 to 3 seconds. did you check it like that. it is also energized when cranking the engine. there is a fuse then a relay then the fuel pump. the relay is ran/ energized by the ecm computer. if there is a fuse relay box under the hood you'll need to check there to. good luck
Testimonial: "This was incredibly helpful. I couldn't find the information you got for me and I was searching everywhere. Thanks!"
SOURCE: I have a 95 firebird.
It's when the security light starts flashing that the infamous "chip" in the key becomes a nightmare to many. Gradually the car begins not cranking anymore or if it cranks it would start and die in a second. Randomly it will do this more and more often until it won't start anymore. VATS, PASSkey and Passlock immobilizer systems are killing cars all over North America, they have a short lifespan and are certainly more effective against owners than thieves. Here is how you save your car
1st trick, Try a spare key that is newer or used less. The pins wear down and so do the keys causing security fail. 2nd trick, (if not starting) turn the key forward 2 clicks till right before it would normally start, leave like that for 10 minutes. ( no less ) After 10 minutes, turn key back then forward and your car might start. I did this in my regal for more than a year. If its shutting down while running, im sorry i have no quick fix... If anything on this page helps you, please remember to comment or give me a thumbs up on the myfixya sight so i can have a better rating to help more people on this. Thanks
Cheap fix: Bypass the chip in your key. Temporary, but effective. Until the TDM (theft deterrent module) in the dash poops out, then you're kinda screwed. I was told that these types of key security systems have a 7-10 year life span. Sucks for us. This link explains the "Key Issue" pretty well.
----- http://vats.likeabigdog.com/
Never worry again fix: Bypass the whole VATS/Passlock/passkey I or passkey II system entirely. Literally take it out, and throw it away. I just did this in my Regal. Took about an hour. Took longer to find the thing than it did to fix the problem. They sell a unit for 200 bucks to totally bypass this system FOREVER. life time-money back and all that. Finally did this in my car. Well worth the 200 if you've looked into getting this replaced... Anywhere from 600-1000 bucks. If you do buy this, please purchase it thru this link. The cost is the same, but i get credit for the sale and im trying to earn my money back, as you will be able to do if you buy fron NewRockies and join the free affiliate program. Thanks
----- http://newrockies.ca?ap_id=judd0081 ----- With this fix, you can take that whole Vats, passlock, passkey system out of your car all together. Good info on both sites.
It works for:
Any GM or Isuzu Vehicle with VATS or PASSKey or PASSLock security systems.
If your car has the chip in the key or in the lock cylinder, then you can save it with this Full Bypass.
Trucks
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GMC/Chevy
1998-2006 S10/T10/Sonoma
/Blazer/Jimmy
1998-2007 Suburban/Avalanche
/Tahoe/Yukon
1998-2006 Sierra/Silverado
2002-2008 Trailblazer
2003-2006 SSR
1998-2006 C1500/C2500/C3500
1998-2006 K1500/K2500/K3500
2003-2007 Hummer H2
.
Isuzu
1998-2000 Hombre
2005-2006 I280/I350
2007-2008 I290/I370
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Cars/Vans
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Isuzu
2003-2007 Ascender
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Pontiac
1994-2003 Grand Prix
1998-1999 Montana
2006 Torrent
1996-2005 Grand AM
1994-1998 Trans Sports
1988-1999 Bonneville
1988-2002 Firebird
1995-2005 Sunfire
1996-2002 Trans Am
.
Buick
2004-2007 Rainier
1994-2005 Century
1993-2004 Regal
1982-1999 LeSabre
1991-1996 Park Avenue / Ultra
1994-1996 Roadmaster
1991-1996 Roadmaster Estate Wagon
1982-1999 Riviera
1988-1991 Reatta
1996-1998 Skylark
1982-1990 Electra (all models)
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Oldsmobile
1996-1998 Achieva
1999-2004 Alero
1994-2004 Aurora
1998-2004 Bravada
1991-1993 Delta 88
1994-1999 Eighty-Eight
1991-1996 Nighty-Eight
1998-2002 Intrigue
1990-1992 Toronado
1994-1997 Cutlass Supreme
1997-1999 Cutlass
1997-1999 LSS/Regency
1997-1999 Silhouette
1991-1996 Custom Cruiser
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Chevrolet/GMC
1998-2005 Astro/Safari
1998-2008 Envoy
2005-2006 Equinox
1998-2007 Savana/Express
1995-2005 Monte Carlo
1997-1999 Venture
1995-2001 Lumina
1988-2002 Camaro
1995-2005 Cavalier
1982-2004 Corvette
1994-1996 Caprice/Caprice Wagon
1995-1996 Impala SS
2000-2005 Impala
1997-2005 Malibu Classic
1997-2003 Malibu
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Cadillac
1986-1993 Allante
1982-1996 Fleetwood
1985-1996 Fleetwood Brougham
1992-2004 Seville
1992-2004 SLS/STS
1985-1999 Deville
1994-1999 Deville Concours
1997-1999 Deville D'Elegance
1988-2002 ElDorado
1994-2002 ElDorado Touring
1999-2007 Escalade
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Saturn
2000 LS/LS1/LS2/LW1/LW2
2001-2002 L100/LW100
2001-2003 L200/LW200
2001-2005 L300/LW300
2004-2005 L-Series
2002-2008 VUE
1996-2002 SL/SL1/SL2
1996-2002 SC1/SC2
1996-2002 SW1/SW2
SOURCE: 2003 trailblazer keeps blowing pcm
YOU HAVE MANY THINGS THAT CAN BLOW THE PCM FUSE.STARTER RELAY,ALTERNATOR, PARK NEUTRAL SAFETY SWITCH, FUEL PUMP, AND THE PCM CAN BE SHORTING OUT.
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