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Engine was shutting off while driving?

Tiny
NICK123456#
  • MEMBER
  • 2002 CHEVROLET SILVERADO
  • V6
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
My truck is not starting. I replaced the alternator, belt, camshaft position sensor, spark plugs, distributor. So I checked the fuel pump and got a spark plug tester both are good. When you stop at a stop sign it would shut off or when you put it in gear it will just shut off. And Friday I was going up a hill and it shut off and now I have a crank but no start.
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Thursday, December 5th, 2019 AT 6:33 AM

19 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

There are several reasons for a no start.

https://www.2carpros.com/articles/car-cranks-but-wont-start

1. Fuel pump. You need to test the actual pressure. Low pressure would cause all these issues.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

2. Spark. Check and see if the tachometer moves up a little while cranking to see if the crank sensor is sending a signal to the PCM.

https://www.2carpros.com/articles/how-to-test-an-ignition-system

3. Compression. I would check the compression as well.

https://www.2carpros.com/articles/how-to-test-engine-compression

Is the check engine light on or was it on when it was running?

Roy
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Thursday, December 5th, 2019 AT 7:33 AM
Tiny
NICK123456#
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  • 4 POSTS
The check engine light was on. I reset the computer to rule out a fail-safe. I also have checked the fuel pressure and it was good.
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Thursday, December 5th, 2019 AT 7:38 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Okay, what was the code? You should never reset a code without investigating why it was set.

What was the pressure?

What about spark and compression?

Roy
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Thursday, December 5th, 2019 AT 7:45 AM
Tiny
NICK123456#
  • MEMBER
  • 4 POSTS
Before I reset the codes I had 5 codes (p0404, p0405, p1345, p0300, p0341). When I did the pressure test it was around 50 psi. I got a spark plug tester and it light up when I tried to start it. I have not done a compression test yet.
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Thursday, December 5th, 2019 AT 7:53 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Okay, the fuel pressure is no good. It should be 60-66 lbs. I would start by replacing the fuel pump.

https://www.2carpros.com/articles/how-to-replace-an-electric-fuel-pump

When you order it, tell them the 8th digit of the VIN number. Otherwise, you could get the wrong one and it will not start.

Roy
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Thursday, December 5th, 2019 AT 8:18 AM
Tiny
WARRENDALE
  • MEMBER
  • 1 POST
  • 2002 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 83,000 MILES
While driving down the road the engine quits running. I have changed the fuel filter twice and added fuel injector cleaner and I am still having the same problem.
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Thursday, September 3rd, 2020 AT 12:07 PM (Merged)
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there,

Run a scan first, re post the codes and we will take it from there.

Mark (mhpautos)
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Thursday, September 3rd, 2020 AT 12:07 PM (Merged)
Tiny
GRAM2005
  • MEMBER
  • 1 POST
  • 2002 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 14,500 MILES
2 days ago, my check engine came on. Today, while running down the highway at 60 miles per hour, the engine just quit running. The motor will try to start, but will not run. What is the problem?
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Thursday, September 3rd, 2020 AT 12:07 PM (Merged)
Tiny
DR LOOT
  • MECHANIC
  • 2,311 POSTS
It sounds to me like a fuel pump problem, but the check engine light will probably tell tell us what is wrong, have want your buddies tow you to the nearest part store and have them download the code's, and then we will know what is really wrong with it
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Thursday, September 3rd, 2020 AT 12:08 PM (Merged)
Tiny
MMORRIS5M
  • MEMBER
  • 8 POSTS
  • 2002 CHEVROLET SILVERADO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 130,000 MILES
2002 chevy silverado v6. 130,000 miles. The engine won't stay running. I have changed the spark plugs, spark plug wires, distributor cap and rotor (these were due to be changed anyway). I have checked ignition coil and ignition control module as per the instructions in chilton manual and everything is ok. I have checked it with an actron obd II autoscanner and no trouble codes are received. The engine shudders and dies as though the fuel is suddenly cut off or cut short (sometimes it shudders badly but does not die). It does this at idle and while driving. It started a couple of weeks ago and has just gotten worse. I don't know if I have bad fuel. I have been through a tank and a half since the trouble started. If it is a fuel delivery problem how do I diagnose if it is intermitent? What else could it be?
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Thursday, September 3rd, 2020 AT 12:08 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
This is gonna be a tough one

Go to this link for more Info:- https://www.2carpros.com/articles/engine-stalls

Check and monitor the fuel pressure if its within specs with a fuel pressure tester-start here
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Thursday, September 3rd, 2020 AT 12:08 PM (Merged)
Tiny
GENE_P
  • MEMBER
  • 3 POSTS
  • 2002 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 120,000 MILES
I have error code p0171 and p0174, it seems that alot of people have this same codes like member silveradoz71 what is the fix? Truck runs then dies codes have been erased and then come back
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Thursday, September 3rd, 2020 AT 12:08 PM (Merged)
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Very common you right
Also very common for these codes is vacuum leak
Also check the manifold gasket
Good luck
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Thursday, September 3rd, 2020 AT 12:08 PM (Merged)
Tiny
OUTCYCLING
  • MEMBER
  • 3 POSTS
  • 2002 CHEVROLET SILVERADO
  • 5.3L
  • V8
  • 2WD
  • AUTOMATIC
  • 522,000 MILES
When idling, the truck will cut off 60% of the time. It cranks back up right away, but sometimes I have to wiggle the gear shifter on the column. If I keep my foot on the gas peddle slightly, it will keep running when idling. When driving down the road there is no problem at all. There is no hesitation, jerking, no lights (from message center or otherwise) that comes on. I replace the battery several months ago, spark plugs and fuel filter a few days ago-still no change. I have ordered an ignition switch. Also, the tow light comes on without me engaging it. The button will not cut it off. I have to put the key in the on position and pump the gas pedal three times and then crank it. It will go off then.
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Thursday, September 3rd, 2020 AT 12:09 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning.

There is an Idle air control on the throttle body that controls the idle. It is a common failure for this issue.

Before you replace this, make sure the throttle body plate is clean of all carbon deposit build up. A dirt throttle body will cause this as well.

Roy
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Thursday, September 3rd, 2020 AT 12:09 PM (Merged)
Tiny
OUTCYCLING
  • MEMBER
  • 3 POSTS
Roy,
Thanks for the help. I will try it Monday. Hopefully all will be well.
Bruce
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Thursday, September 3rd, 2020 AT 12:09 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Let us know how you make out.

Roy
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+1
Thursday, September 3rd, 2020 AT 12:09 PM (Merged)
Tiny
OUTCYCLING
  • MEMBER
  • 3 POSTS
Roy,
I did what you suggested and look forward to testing it out tomorrow. It was nasty in there and it cleaned up nicely.
Will keep you posted.
Bruce
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Thursday, September 3rd, 2020 AT 12:09 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Thank you

we will be here
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Thursday, September 3rd, 2020 AT 12:09 PM (Merged)

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