Question about 1999 GMC Envoy

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Crank but no start. got fuel to injectors.

Crank but no start. got fuel to injectors. injectors not firing. suspect security system. any suggestions?

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Crank sensor

Posted on Jul 23, 2009

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Posted on Jan 02, 2017

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1 Answer

Chevy camro not turning over has fuel butand fire


Your saying it cranks good but won't start? Did you use a gage and check proper fuel pressure? You say you have spark everywhere? Do you have fuel injector pulse? Any applicable trouble codes? Is there a security system?
What is model year?

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Why won't my car start. It cranks over but won't fire up. It's getting fuel.


Hi you need to check for fuel pressure and volume then injector pulse . check for spark , check timing and compression.
If you dont find injector pulse or spark , suspect your cam and crank shaft position sensor.
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kind regards Faldih Higgins

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2005 Dodge Neon Has no fri at plugs,no pulse at injectors and starter will not turn with key.


what about your security system? Is the security lamp on the dash on of flashing? If it is your security system, I doubt I can help you from here? Any applicable trouble codes?

Battery has a full charge? Sometimes the battery gets run down from testing?

The asd relay supplies primary voltage to fuel injectors--coil pack and other, engine cranking. The computer usually has to see both the cam and crank sensor signals or it won't ground the asd relay. I can only make suggestions on what to check.

Mar 05, 2015 | 2005 Dodge Neon SXT

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1999 silverado 2500 6.0 motor wont start


If the passkey system were not working the engine should not crank and the fuel injectors would be dead. The security light would also stay on.
The fuel pump relay gets battery voltage and also voltage from the key switch. The computer grounds the relay to power the pump.
The crank sensor does not come into play until the engine is cranking and it supplies a signal for the ignition and injector pulse.
Are you not getting power from the key switch to the relay, or from the battery side to the relay ?

Sep 30, 2012 | Chevrolet Silverado 2500 Cars & Trucks

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2000 S10 no start


I'd use a gage and check proper fuel pressure, key on engine off, 60--66 psi with spider fuel system.
Engine cranking did you visually check for spark at the spark plugs? Engine cranking is there a fuel injector pulse?https://s8.postimg.org/50arofh11/fuel_pump.jpg
Click on the link for fuel pump relay, you can check the fuse. At the fuel pump, gray wire is voltage, black is ground.

Apr 15, 2017 | 1997 Chevrolet S-10 Pickup

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Crank sensor


Yes your crank sensor tells your computer when to fire the injectors and the spark plugs so, if you have no crank sensor, you have no start. It could prevent your car from starting depending on the conditions when the security system was activated. Has anyone kicked the rear of your car lately? Or have you been in a fender bender? Those 2 things could trip the inertia switch in the fuel pump which could also cause your car to not start like that.

Feb 27, 2009 | 2001 Cadillac DeVille

1 Answer

No power to fuel pump, relay is good, engine cranks over but won't start.


You need to follow a detailed troubleshooting procedure in a repair manual.
Check for spark plug fire during cranking after it dies.
No spark = ignition problem= computer will not fire injectors, and possibly cut out pump also.
Good spark = pump wonky, or power to pump system.
Also, other quick tests... when the thing dies, and then you crank,
1) Thump the fuel pump in the tank, if you can. A bad fuel pump might start up again.
2) Shoot some ether carb cleaner in the TB. If it only fires off the ether, the ignition system is no longer suspect.

Oct 13, 2008 | 1992 Dodge Dakota

1 Answer

1988 Chevy S10 2.5


chack and see if your security light is staying on if so then security is shutting down fire to injectors.
are you gettting spark? pcm needs to see a signal from cam sensor to fire injectors. also when you first cut key on you should see the injectors give an initial shot of fuel

Sep 29, 2008 | 2000 Chevrolet S-10

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