Engine Dies and Then Starts Right Back Up

1996 Chevy Blazer. 6 cylinder engine.
While driving on the highway my Chevrolet Blazers engine just shut off. I pull over, wait a minute, then start the engine and continue down the highway again. A minute later the engine shuts off again. This happens 7 or 8 times. Everything is fine for a week then it did it again. Why is the engine shutting off?

No warning lights come on and all the gauges are normal. I got the garage to scan computer and they said no codes were coming up. So the blazer starts fine and runs fine just shuts off whenever it feels like without warning. Any suggestions?


Answer: This could be a problem of a failing fuel pump. This is pretty common on this truck. Normally this would cause the truck to sort of stumble before it stalls. If it just instantly shuts off like you are turning the key off, then it may be a problem in the ignition switch in the steering column, or an ignition control module. It may be hard to find, especially if it starts right back up. Would need to have a fuel pressure gauge on the engine and watch to see if it drops as it stalls, and if it it is low when trying to restart- and it won't. Pressure needs to be at least 55 PSI.

You can also try tapping on the ignition switch to see if you can cause it to stall. The lower steering column cover would need to come off to the access the switch.

S-10 Cranks Wont Start

1992 S-10 Pickup V6 4.3 4WD Vortec V6. GM Computer codes = no
Got new battery installed.
Truck ran fine never had problem until now truck cranks fine and strong also fuel pump starts for 2-3 seconds then turns off left for 2 days came back would not start. Was hot humid and raining out but never a problem before with starting when left truck without running before thank you.


Answer: The fuel pump should run for 2-3 seconds with the key in the ON position, not cranking. It should run constantly while cranking. Need to have fuel pressure checked. Even though the pumps runs, does not mean the pressure is high enough.
Wet weather can cause a no start problem if the distributor cap, rotor, ignition coil or coil wire, or spark plug wires are faulty. The spark will jump around and cause it to not start. The cap and rotor are most common, although the coil and coil wire will do the Same. You can try and spray water from a spray bottle on these items when it is running to see if it starts misfiring or you may even see the spark jump out of the coil or coil wire. But just inspect them first to see if they are corroded.

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Comments (61)
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  • Guest - steve

    In reply to: Guest - steve

    could it be ign or distributor

  • In reply to: Guest - steve

    12 PSI is not enough to start the truck. You need at least 55 PSI for this truck to start.

  • Guest - Tyler

    In reply to: joel

    95 is last year of TBI. 12psi is right on spec.

  • Guest - dennis

    95 camero 5.7. engine started ran for 5 minutes started to chug, shut down, towed, tech could not find any codes. started engine ran for 20 minutes ran great

  • Guest - Michael

    94 chevy astro van surges while driving. Engine sounds good and it idles good (no sputtering or any wierd sounds) once I get to any steady speed the engine surges like I'm taking my for off and on the gas pedal. Feels like someone is rocking the van back and forward. I can stop it by either giving it gas or letting off the gas but once I'm at a steady speed again it's starts again. All fluids are good. Fuel pump is only a couple months old. Need help

  • Guest - Rk

    In reply to: Guest - Michael

    I'm having the same issue with my 00 Chevy S10 Blazer LT

  • Guest - romald mccloud

    89 f150 dies while driving turn key off then turn key back on starts back

  • Guest - juan

    My s10 dies while running on the road 2000 she cranks back up in the head dies again

  • Guest - CHUCK

    Easy it's a fuel filter ,just like leaves blowing into a chain link fence it will clog while the pressure is forcing in the direction of the screen/filter once you shut it off the the leaves fall clearing the clog ,but will repeat till you replace filter or burn up your pump.try that first and go down to your EGR

  • Guest - Perry Freeman

    I have a 02 Chevy S10 4.3 runs good until it reaches the line above the quarter mark of the temp gauge, running down the road it slowly dies, put in neutral coasting turn the key off for 5 seconds the starts back up 2-5 miles later it does it again, sometime I can get it to catch up by pumping on the gas pedal it bogs and then back fires through the intake, it has a K&N intake performance kit but really has no balls good while it's cold but not when it's at operating temp.,1. change fuel filter, 2. Ignition control module, 3. cap, rotor, 4. crank shaft position sensor.
    the cap and rotor now clicks sense it's been changed, idols rough, and seems to die more often I am really stumped. I have asked pro's and they say different things so I try them and nothing changes so the next thing I'm going to do is to replace the pickup coil in the distributor, change the spark plugs and wires bring back the cap and rotor that I purchased and replace them also that's all I know to do after that if nothing changes then i will have to take it to a shop but only when it's going on.
    thanks for listening any reply will be appreciated.

  • Guest - Arnold

    In reply to: Guest - Perry Freeman

    I have the same problem and i changed everything you did and were about to change it was go for a few monthes i took out my battery and full charged it because someone told me if the computer doesn't see the right voltage it will go into limp mode i have a 2000 4.3 blazer i just changed the cat im all out of ideas perry

  • Guest - Don

    I have a '92 S10 Blazer 4.3 TBI. It runs fine until the outside temperature gets above about 70 degrees. Then, when cold, it can be driven 25-30 miles then shuts off. Let it sit for a few minutes, it will crank back up and run for a few minutes. The longer I let it cool down, the longer it runs (up to 20 miles/20 minutes after it's warmed up. The fuel pump and ignition spark control module have been replaced, and the thermostat removed. But above 70 degrees it has a 30 mile driving range. I got it in the dead of Winter and drove it everywhere. It would just die on warm days.

  • Guest - Eric

    In reply to: Guest - Don

    That's exactly what my 2000 S-10 2.2 liter is doing! When it starts warming up outside it starts dying while I'm driving it. Pull over let it sit for a min and cranks right back up and does it again after driving a few miles. Very frustrating

  • Guest - Zamora

    2011 aveo5 was driving at 45mph and started to slow then jerk then off. Parked turn engine on turns off turn on after 5 mins starts and runs again. But I noticed when I turned on the heat that's when it started. Turned off heat and radio and lights and ran for an hr w/o turning off. What do you think is wrong

  • Guest - della

    I have a 1998 gmc pickup truck. All at once now i. Start the truck. Runs about two minutes then shuts off. I turn the key off .then turns it back on .and it starts up again then a min or two later dies again but it only have maybe an eighth of gas. Good that be the cause maybe not enough gas to keep it running longer idk help please if you can p.m.me at della anderson if you can bc i dont know how yo check stuff on this

  • Guest - Tom

    In reply to: Guest - della

    Yes, having very low fuel in the tank could be your problem, especially if the fuel level sensor is not very accurate. Make sure there is more gas in the tank and if it still happens, have fuel pressure check because the problem could be a weak fuel pump or ;plugged fuel filter.

  • Guest - Isaac

    Crank positon sensor

  • Guest - Mike

    I had a Ford pickup with same problem. Turned out that the problem was a pinhole is fuel line between tank and fuel pump. Didn't leak gas, just sucked air and shut engine down. Would start back up right away.

  • Guest - Nelson

    S10 blazer stalls when I turn left need help

  • Guest - Tim

    I turn my 95 s10 key off but it still keeps cranking

  • Guest - Tom

    In reply to: Guest - Tim

    You have a problem in the ignition switch. It sounds like it is sticking.

  • Guest - Trisha cruz

    I just bought a 2000 GMC Jimmy 4x4 4.3 engine and was told the fuel pump was bad, so replaced fuel pump ,fuel filter and still doesn't want to turn over. Can hear the fuel pump turn on and the relay sinser kicks in. Checked all lines. Got it to start once but turned off I don't got money to take it to shop. What else is wrong?

  • Guest - Billy

    In reply to: Guest - Trisha cruz

    Check your crankshaft sensor

  • Guest - Debbie Edwards

    Toyoto mattrix just dies then starts up again

  • Guest - Phil

    In reply to: Guest - Debbie Edwards

    If it dies when coming up to a stop or when sitting a stop light idling, then you should have the throttle cleaned. Carbon buildup in the throttle will cause a car to stall at idle. Also you would want to check for any vacuum leaks.

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