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98 GMC Sierra getting spark and fuel but will not start

Pouerd gas in the intake still will not start, Could this be a bad camshaft or crankshaft sensor

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Posted on Jan 02, 2017

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SOURCE: 1997 gmc sierra 1500 5.7 vortec got spark got fuel

You said you have fuel pressure but what is it? It has to be 55 psi or it won't even try.

Posted on Mar 15, 2009

  • 1 Answer

SOURCE: 2006 gmc sierra 1500 stalled and will not start.

i have a 06 sierra that done the same thing and it was the distributer gear stripped

Posted on Dec 08, 2009

  • 10319 Answers

SOURCE: where is the crankshaft position sensor on a 1996

it can be the sensor is next to the balancer

Posted on Jun 30, 2010

  • 1 Answer

SOURCE: 1997 gmc sierra 4.3l new fuel pump and wont start

I have 1993 gmc 4.3 vortec v6 turns over but want start. replaced fuel pump, fuel pump regulator ,ecm, tps, coil

Posted on Apr 13, 2011

  • 128 Answers

SOURCE: 1995 gmc jimmy 4wd 4.3

The problem is either your fuel pump relay is overheating our your fuel pump is over heating. They also have the problem with the wire connector on top of the fuel pump melts. This is a known problem with them, when you but a new fuel pump they give you a new connector and a service bullentin regarding this problem.

Posted on Apr 28, 2011

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3 Answers

Why wont my 1998 gmc 3500 sierra turn over

Check for fuel by pouring small amount of clean gas down throttle body and crank engine over. if it starts and runs just for a few seconds you have a fuel delivery problem. If it still does not run after several attempts check for spark at spark plugs. that should get diagnosis started

Aug 03, 2014 | 1998 GMC Sierra

1 Answer

No spark or fire to plugs

Sounds like a bad crank position sensor or a bad camshaft position sensor.... If the sensors can't tell the ecm where the position the crankshaft or camshaft is, the ecm won't know when to send a spark. So the ecm won't send any spark.

Apr 23, 2013 | 1998 GMC Sierra

1 Answer

My 98 gmc 1500 V8 5.0l won't start. Has good spark

Spray starting fluid into the air intake of the engine, if it starts and you have fuel pressure you have no injection or injector pulse as we call it. Check ECM fuse one and two for continuity if it starts with fluid..

May 25, 2012 | 1998 GMC Sierra

1 Answer

Will not start at all does not fire

if fuel pressure is ok,the upper intake gasket is common on the 3.8 litre and so is the camshaft position sensor and the crankshaft need to check with a scan tool for crankshaft signal,and any codes.if the intake has a severe vacuum leak it can cause a no start condition.usually the camshaft phase sensor will cause a rattling noise that sounds like a bad belt or tensioner from the passenger side of the vehicle.the camshaft sensor requires removal of the power steering pump to replace it.

Mar 09, 2012 | 1999 Ford Windstar

1 Answer

My 98 explorer turns over but will not start. The fuel pump kicks on for half a second, then immediately shuts off. Does anyone know how to go about fixing this?

your truck has two sensors that are in control.There is a camshaft sensor that controls when the fuel injectors open according to camshaft position.If this one is bad the fuel injectors wont open and the engine wont get any fuel.It also has a crankshaft sensor that is in control of allowing spark to the propor spark plug at the right time.If this sensor is bad you will not have any spark to any of the spark plugs.The fuel pump will only run for 2 to 3 seconds unless the motor starts,it is designed that way and it primes the fuel system and brings it up to pressure.(aprox 40 psi )

Jan 09, 2010 | 1999 Ford Explorer

2 Answers

Truck died (just like it was the fuel pump). Pump is good, Have gas all the way to the intake. It is firing. Something is not releasing the gas at the intake. My guess is a sensor or the control module....

all of the above are swell answers but ive had this problem in my 96 sierra 2500, have the presure checked at the intake, i had a fuel pump go, then had it replaced.(by gm) and then used the truck for a couple weeks, then sat the truck for 30 days, went to start the truck.... no start. had pressure checked at dealership. boom bad pump, not enough pressure. the unit was replaced again and im a year into this one never failed again.

Dec 12, 2009 | 1998 GMC Sierra

1 Answer

1996 gmc sierra will start but wont turn over replaced fuel pump and fuel filter

If the check engine light is on, rent a scanner, read out any code(s), and pursue to repair(s). If no ignition along with fuel, the crankshaft/camshaft sensor may be defective. The above scan should identify the problem.

Nov 20, 2009 | 1997 GMC Sierra

2 Answers

I have a 98 jimmy 4.3liter v-6. I have changed

Suspect the crankshaft/camshaft sensor may be bad which controls timing of both spark and injector firing. The check engine light should be on--rent a scanner, read any codes and pursue to repairs. Hope you installed the new distributor exactly as the old one.

Nov 15, 2009 | 1998 GMC Jimmy

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