Chevrolet S-10 Truck Starting Problems Answered

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79 Responses

  1. Ted Roosevelt says:

    I just put a new fuel pump on my truck and it still will not pump fuel to my carb. And my fuel pump is mounted on to the motor. Why else wouldn’t it pump gas

  2. Rob says:

    A friend has a chevy s10 and at 238 miles with at least half a tank of gas engine wont start till even just a gallon of gas is added

  3. John Tod says:

    It needs more fuel pressure to start than it does to keep running.
    More than 50lbs will run the motor but it takes 66 to 70 to start it.

  4. James says:

    I poured gas straight into throttle body and my 2001silverado wont start, I do not hear my fuel pump buzz when I turn on ignition, but shouldnt it start with gas pour straight into???

  5. says:

    1995 Chevy silverodo, truck starts up but when I put it in Drive it stalls and shuts off. HELP

  6. Bobby says:

    My dads truck won’t start it sits over night then when we try start it in morning it just turns over it does it every morning we sprayed starting fluid in it and it still didn’t start

  7. jack robinson says:

    i have a 1995 s10 it wont turn over unless you jump it, put 4 different batteries in it (not new) put new starter on it. acts like there is juice in battery, but wont turn over until you put jumpers on it.

  8. Wallce says:

    I have a 1999 s 10 extreme It will not start or run unless you pour fuel in the throttle body after that runs out it dies I have put new intake gasket and new plenum gaskets on also a new fuel pump.what could I do to make it start and run.thanks

  9. Jay says:

    93 gmc 4.3l FI runs but dies out loss of power after 5 mins of running then wont start for 2 hours new pump new ing coil i think its a press reg. Fuel drops what do u think

  10. Sonya says:

    I have 99 s10 2.2ltr engine wont start unless I hold throttle half way down

  11. sense says:

    98 s10 chevy truck will start then die out checked fuel pump checked fuse pressure what might be the problem

  12. dewayne says:

    OK so I got a 1997 chevy s10 blazer with the vortex in it. I had just replaced the fuel pump but now my shifter in the car won’t shift in to any of the gears and it will crank up and run. It just won’t shift into any gears like something is stopping it. Any ideas??

  13. says:

    I have 94 full size blazer with 350. I just put a 350 turbo transmission in it. Went to crank it but won’t start fuel pump is priming changed fuel filter it will fire up and run as long as u pour gas in throttle body but dies as soon as u stop. What could this be?

    • Will Davis says:

      I have a 94GMC Sonoma..have replaced fuel pump, computer,module, has good fuel pressure.. Pour fuel in the intake but will momentary start then shut off..but has good fuel pressure at rear of motor..replaced the fuel meter body. you have any idea or any suggestions?

  14. Mr. Mechanic says:

    Have 94 S10. Replaced fuel pump filter and strainer. Was sputtering on acceleration would idle fine but no throttle. Idled with 10 lbs. Pressure at rail. 2.2 litre. In this senario usually pump but you can try to change fuel filter. When putting new pump ALWAYS change filter. Good luck !!

  15. castertroy says:

    I had the same problem with the no start and it was the fuse located in the fuse box under the hood that goes to the ECM. The fuse was blown.

  16. Mekaniq says:

    My friend had the se problem and it was key switch so you try that

  17. crystal says:

    i have a 1999 s10 i put a new fuel pump on it and a filter now the truck wont start unless i pour gas in the carb what should i check next

  18. Burt Ward says:

    98 4.3 sonoma. Going down a steep hill, I downshifted the auto to 3. It gets to bottom of hill and stalls. I roll into side lot and try to restart it. It won’t start and the battery dies. I tow it home and begin restoration process. I first diagnosed a weak spark situation. May have been like that a long time. I pull a used coil that tested in limits, $3. I also pulled a used ICM $10. I went ahead and took the cap as it looked better than mine $3. I get it all put on and it sputters. I figured its flooded. I cranked it on and off for a day and finally it fires off and runs great. I will most likely need a starter next.

    I also have the dreaded fuel regulator issue. The short term workaround is to remove the connector to the vacuum sensor. It does bog down when accelerating though.
    It could also use new wires and plugs. I may sell it instead because that job on the 98 Sonoma is not nice at all.

    I also have the windshield wiper gremlin. I’ll fix it at the next Pull-a-part electrical sale. Its needs a controller from a newer model that fixed the glitch that causes the intermittent to fail and makes it stop mid windshield.

  19. guy brown says:

    I have a2002s10truck w/4cycle. It starts but then dies right away please help

  20. stacy steel says:

    01chevy s10 4.3 just died going 70 mph on the freeway starts back but dies when I put it in gear. Has new fuel pump

  21. Anonymous says:

    To s10 no power on fuel pump. Check ground on frame at back of bed in frame on left

  22. Will says:

    I have a 1995 s10 2.2… it will start and idle all day but when you go to drive it will or sometimes try to shut off? any ideas oh and it is a 5 spd.

    • Anonymous says:

      I have 1998 chev s10 it does the same thing it will start up and idle it wants to kill on me every now and then not all the time the gauges go crazy for a second then of

  23. Jeremy says:

    1989 s10 4.3 was sitting for 6 months because fuel pump went out it wasnt getting fuel to throttle body injectors . replaced pump and now its getting fuel through the injectors and acts like it wants to start but doesnt fire to run. i have spark and fuel . what could cause it to act like this . it acts as if its getting ready to start but wont fire up to run

  24. Anonymous says:

    I have a 02 4.3 s10 that I just bought that will start only when I spray starter fluid in it (I know this is bad) I can hear the fuel pump running no sure what the pressure is. Anyhow once is gets running it idles fine. I can even rev it up when in park without stalling or missing. once I put it in drive it seems to do fine unless I have to punch it. it usually doesn’t stall but will from time to time. however if im going up a hill or if im giving a lot of gas is starts to sputter through the intake. there is no indicator lights on any ideas?

  25. Jimmy says:

    My S-10 1998 PU is puzzling me. . . I’ve owned it for a long, long time (12 years) but when I turn the corner it cuts out and dies — all of a sudden — the garage doesn’t know what to make of it It’s my bud and I hate to park it permanently Help anyone?

  26. Peter Heavy Runner says:

    I drive a 1998 Chev Blazer 4.3. Vortec. I was driving one day and I noticed my RPM running high so I tried kicking it dwn and it would kick dwn. The blazer then began to jerk n loose power and was making a klicking sound near the starter area. The blazer then began jerking and losing power then stalled. It started once but would not stay running. The blazer then would not start but all lights on the dasboard are on. I thought it may have been starter so I changes the starter n pute a new battery it still wonblt srart help to give?

    • Harry says:

      That could be a lot of a things. If the engine was making noise and now will not crank over, the engine may be locked up.

      • George says:

        check your power steering pump, alternator, belt tensioner any thing running on the serpentine belt if you have an alternator bearing lock up it will stop you motor at low speed and will not be able to turn it over. Easy test is take belt off see if it starts if it does start spinning the pulleys.

  27. Anonymous says:

    I have a 95 s-10,4.3 vortec, one day I parked it and couldn’t get it to start, I changed fuel pump and it comes on but all it will do is sit there and crank but won’t start? It seems to b gettin plenty of fuel where u can purdge it up by throttle body, dnt have a fuel pressure checker or woulda done that?? Any ideas would b greatly appreciated, been messin w this dang thing for months now ever since I bout it

  28. kyle says:

    99 s10 4.3 w vin done engine swap and could only get it to run by pouring fuel in to TBI. Then would run. Hooked computer on it and it came up crankshaft sensor so I got that and the sensor on distributor. Replaced them both. It fired but only on three cylinders on the drivers side. What is going on??

  29. Anonymous says:

    i have99 gmc Sonoma 4.3 when I turned engine off then wont start cranks over good just wont start help

  30. mike says:

    I have a 94 s-10 2.2. 5spd. I just put a used motor in had a miss and narrowed it down to a bad injector on 3 cylinder. When I was taking it apart 4 injector cracked and I replaced it to. And replaced 1 as well. I had a few leaks but got those fixed. My problem is every time you start it. It is review wide open. I have had bad luck with this truck. Can anyone please tell me what could be wrong. Thank you very much

  31. Laura says:

    OK I have 2000 Chevy blazer Lt 4.3 vortex I am having issues I am tired of fixing and guessing OK so I was told need complete tune up fine did it coil packs and fuel filter my vehicle starts fine then maybe about 3-5starts after won’t start I wait like 15 min then it starts?? Fuel pump sending unit ??? Or injectors?? Or who knows PLEASE HELP Me a.s.a.p

  32. jeff says:

    I have a 1998 s10 4.3 when I start my truck i can hear the fuel pump come on but still wont start

  33. Francisco says:

    First determine if the ennige is not getting spark or fuel or neither. Then concentrate on that area. Need to know if it cranks over or just clicks when you hit the key?

  34. michael says:

    i fill the truck upcause the gas gage is off so i keep full,and while im driving it will quit running i,ll pull over and wait a minit and it starts up and go,but if i try to give a bunch of gas it wants to die ???

  35. michael says:

    i have a 2001 2.2 and when im drivingthe truck just shuts,down quits running !!!i keep the tank full and the gas is off!!i replaced the fuel fillter can you help?

  36. che reynolds says:

    I have a 2002 s10 no start. Good fuel pressure to filter n to check valve on top of throttle body but will only start if I pour fuel n throttle body then dies after 20 to 30 seconds. Need help

  37. berny says:

    I have a Sonoma 97 2.2 dont know if this is relate need some help my truck runs ands starts normally the problem I am having is that when I am driving and brake to reduce speed an try to resume continue driving on 2 or 3rd gear it stalls a little bit then it continues an it goes away is this problem related to the fuel pump[ some friends have told me must be a bad fuel pump I chek the pressure but since doesn’t have the gauge had to check on the bottom from the fuel filter an it read 40 psi at the most does this means I have a bad fuel pump

  38. Viincent says:

    i have a 02 s10 truck i push cluch but eng.wot turn over.

  39. HAROLD says:


  40. Blake h says:

    Guys I’m stomped I have a 1994 2.2 s10 4 cylinder and it will start run about 5 minutes then act like it runs out of gas and shut off then if I wait 5 to 10 minutes it will start and do the same thing. I’ve replaced fuel filter, pump, and fuel pressure regulater , and even ignition control module. And no luck if any 1 has had this happen to them I’ll greatly appreciate so advice I live way out in the country and not to many mechanic’s around any help please feel free

  41. corene reames says:

    96 chevy truck turns over will start with starter fluid then dies , it seems to be getting gas?

  42. JODY says:

    my 95 sonoma 2.2 randomly starts and like clockwork shuts off. the fuel pump seems to come on then cut out and soon after cuts in and out eratically. i also hear the relay doing the same. ive changed crank sensor, egr, fuel pump regulator. help

  43. ron says:

    have not looked but it gets real hot to the touch not very good with newer auto worked on older auto 1969 olds and such.

  44. ron says:

    some of these things are happening to my 1998 chevy s10 truck works good pour a little gas in fuel carb runs good also noticed, ground wire getting hot, would this make it affect, system.

  45. walter says:

    where does the ground come from

  46. walter says:

    i have a 2000 chevy 1500 4.3 v6 im not getting a ground to the injectors i am getting positive to the plug on top of the spider injector any ideas

    • Bobby says:

      The computer (PCM) controls the ground. Either you have a broken wire, bad computer or something not telling the computer to fire the injectors.

  47. Anonymous says:

    Is there a sensor that works with the injectors? Because my works with the fuel in the throttle body but when you turnoff injector are not spraying. I changed fuel pump and filter and injectors too.

  48. jerry says:

    i mean that it will not start again until i pour some more gas in this 98 sonoma/

  49. jerry says:

    I have a gmc sonoma 4.3 v6 , i had a faulty fuel pump and replaced it and now it will only start if i pour gas into the throttle body and then it will run until i turn it off and then it will not crank? what do you think is the problem?

  50. david says:

    I also have 95 s10 2.2 not getting ground pulse from computer to injectors truck shut off and changed fuel pump ,pressure regulator ,computer,crank sensor checked all grounds on truck has spark has great fuel pressure just injectors not firing on.

  51. Stan says:

    94 s10 new full pump has good presure new plugs wires rotor button dis cap don’t think it’s getting fuel to injectors how can I check no check lights on

  52. cesar says:

    I have the same problem not getting any signal to the injectors on a 94 2.2lt checked fuel pressure and different sensors basically it will run for a couple of mins then its like the injectors just cut off no signal at all anybody have a clue to this don’t what else to do to it

  53. russ says:

    1999 s10 2.2 New pump no power to the relay and no fuel pressure

  54. DannyBoy says:

    IF YA HAD TO GUESS??????????

  55. troy says:

    What is the problem is it in the fuel

    • Techjk says:

      I thnk you mean the engine cranks but will not start unless the throtle is wide open. Check fuel pressure. Check for a leaking fuel pressure reguator causing a rich condition. The oil would smell like gas.

  56. troy says:

    1999 s10 2.2 engine will not crank unless throttle is wide open

  57. stevel says:

    My 01 chevy s10 wont start tested fuel pressure its good I checked cam shaft position sensor it reads at 11v I replaced fuel filter spark plug wires cleaned plugs and distubter cap and roter I have spark and good fuel presdure but don’t know if fuel is reachin the throttle body injectors please help.

    • Admin says:

      You would have to have a fuel pressure gauge and a scanner to turn on the injectors one at a time and watch for a pressure drop to confirm if the fuel injectors are firing or not. Make sure your pressure is at least 55 PSI. Even 1 lb. less, it will not start.

  58. joe cobb says:

    1999 S10 4.3 eng. will not start sometimes after driving pressure bleeds off after the eng is turned off is the fuel pump bad?

    • Stan says:

      The oil is overfull? Make sure it is not from gas. If it is that would explain the pressure bleeding off too. That would be caused by a bad fuel pressure regulator under the intake.

      If that is not leaking, the you need pinch off the return fuel line and the then the fuel feed line to stop the bleed back. This will tell you if the problem is the fuel pump or after the pump- like the regulator or an injector.

  59. joe cobb says:

    1999 S10 4.3 eng some times want start in driving and some times after drivig. Did pressure ck. ok but bleeds off after eng. is turned off. ive found the lower intake gasket is leaking and may be getting in to the oil the oil pressure is higher than normal looks like 3 qt”s over after fixing these will that efect the fuel pump problem

  60. Dee says:

    my s10 is hard starting when cold,and when it starts it has a continues miss.

    Protech: A couple different things can cause a situation like this, and are mostly fuel related. Usually, a tell-tale sign of a fuel pump that is going bad is a hard starting condition when cold. You might want to start with a fuel pressure check just to see if it’s within specs. You should have at least 50psi with the key on and it should hold steady. Any lower than that and you’re looking at a bad fuel pump. Also, low fuel pressure or volume can lead to misfires. Faulty fuel injectors can also lead to a misfire condition as well but depending on the year of your S10 Pickup there is really no quick way to test them. A scanner would come in handy to see which cylinders are indeed misfiring so you could concentrate on those only. You may also want to check ignition components, as things like a distributor cap that has corrosion inside, or a corroded rotor can cause these same conditions. As you can see, there is lots to check. Good Luck.

  61. chance says:

    I have a 2002 Chevy S-10 4.3L and it is losing fuel pressure as soon as the pump shuts off and I replaced the pump and the pressure regulator and it still loses pressure. Any ideas what could be wrong?

    • Mechanic JK says:

      Hmm. That is a good one. About the only thing that can cause a leak down of pressure IS the pump or regulator. Make sure you do not have a leak anywhere. When it starts, see if there is a puff of smoke from the tailpipe and see if it it runs rough. You may have an injector stuck wide open. If that all checks out good, then you may have fixed it with the fuel pump, but got a bad new one doing the same thing. Using fuel line shut off tools to determine which way it is leaking back will tell you if it is in the tank or engine side.

      • Anonymous says:

        put a hose at the top of the fuel pump were it conects to the line in the tank. throw away the littel valve looking thing.