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Chevy Blazer Starting and Stalling Problems



  • jlflemmonsjlflemmons Posts: 2,240
    Does it have the heat shield in place? Sounds like a classic case of heat getting to the starter.
  • igmaamigmaam Posts: 4
    We thought of that, but didn't think would apply since the blazer doesn't have headers. We'll have to take a look underneath, thanks for the suggestion.
  • I hv a 2001 blazer, wouldnt start one day and then the next day starts, we replaced cap, rotor, wires, and finally replaced fuel pump even though we could hear it kick in, it just wasnt pressure of 60, more like 15, so i fixed it myself for $240 instead of deal price of $800 and thank god it has been working over a week. I changed thermostat but still heater doesnt always work.
  • rsolersole Posts: 1
    I have a 2002 blazer with 135,000 miles on it that recently started to get sluggish when trying to start it. It sounds like the battery is low. This has happened a few times now but each time I get it home, the voltage at the battery when the engine is running is just over 14 volts and when not running it is 12.6 to 12.8. The connections at the battery are clean and the ground connection is good.

    It will act up (a couple of times I did not think it was going to start) and then start fine for several days or weeks before acting up again. It doesn't seem to make a difference whether the engine is cold or hot.

    To add information, this is the 4th battery I have had in the vehicle. Each time it just suddenly would not start. Never any warning. Also, there has always been a voltage fluctuation. At night I can see a slight flicker in the headlamps, almost like a pulsing, but it never failed to keep the battery charged.

    I basically work out of my truck and can not afford to get stranded. I have been carrying a battery jumper to be safe but if the battery shorts out, as happened before, it will not even start with a jump.

    Any ideas?
  • jlflemmonsjlflemmons Posts: 2,240
    Ever replace the starter? The bushings in the starter motor may be worn, causing it to drag and act like the battery is weak. This will also suck the life out of a battery as it has to dump a lot more current in the attempt to get the starter motor to turn.
  • I have a 96 Blazer LS, 156,000 miles, 4WD, 6cyl that runs like a top...when it starts!! 1st issue happened when turning the corner and the truck died and wouldn't start back up. Changed the cap and rotor and ignition mod. Ran great for a couple of weeks! One day didn't start...took the other truck, came home to check for spark, and it started! :confuse: Ran great for a week. Went to such luck! Same situation...took the other truck, came home to check for spark, lots of spark, but this time it didn't start. Towed it to the garage, put it on the charger overnight, mechanic went out checked some of the connections...all seemed fine, then hooked it up to the computer, and the truck started right up!! :confuse: This was the 2nd time being on a computer, the only codes that come up are for a secondary O2 sensor which we know is related to the cat converter and have been told that it has nothing to do with the vehicle starting. So since it was running there wasn't really anything to fix. Drove it home, ran great for 2 days, went to start it this afternoon...NOTHING! Everytime there is spark and fuel. So what ever is going on is intermittent. We have stumped 2 mechanics. We were thinking next, maybe the ignition switch? PLEASE someone...I need some suggestions! Where do I check from here?
    Thanks in advance!

    PS I have a remote starter and we thought maybe it was malfunctioning, so we disconnected it. Not the problem!
  • I have a 1992 chevy blazer. It will start, run for about 5 minutes (until it is warm) then shut off. It will restart after it cools off (20 - 30 minutes). It seems to run fine, until it shuts off. I have replaced the fuel pump. Do you have any suggestions as to what might be the problem.
  • I have a 1992 chevy blazer that will start and run for about 5 minutes, until it gets warm and then stall. It will restart after it cools down, but then stalls again. I have replaced the fuel pump. Do you have any suggestions. Money is tight, and I can't afford to make costly repairs, that won't fix the problems.
  • jlflemmonsjlflemmons Posts: 2,240
    Sounds like a classic coil problem. Check to see if you are getting spark when the engine dies.
  • How much does it cost for a new starter for my vehicle?
  • I just had the starter replaced on my 1993 Blazer, but she is still having a problem starting. It has a 4.3 L V6 Vortec with 191,000 miles. I've been told it could be build up in the injectors, but I've also been told it could be a compression problem. When I start it after sitting overnight I have to spray carburetor cleaner in the intake valve for it to fire. After that it's fine unless it sits longer that 30 - 45 minutes. After that time frame the whole spray to fire process starts again. Can anybody tell me what this problem is so I don't spend a fortune on pointless work and carburetor cleaner???!!!
  • sheps47sheps47 Posts: 9
    I have a 92 S-10 Blazer with a 4.3L. It starts fine most of the time, but every once in awhile it won't start. It acts like the battery is dying. After waiting 10 minutes it will start up fine (without charging the battery). It does it whether or not I've charged the battery or not. Please help.
  • jlflemmonsjlflemmons Posts: 2,240
    Could be an intermittent cell in the battery. How old is the battery, and have you checked the voltage on the battery when this occurs? Are the battery terminals clean?

    Easy trick: when the engine won't start, turn on the head lights. If they are dim, you either have a bad battery or connection, probably also at the battery. If they are bright, but dim noticeably when you try to start the car, same thing, either battery or connections.
  • sheps47sheps47 Posts: 9
    I think the battery is pretty old. It has been drained completely twice when the dome light was left on accidentally. The voltage is around 14 when it is running.
    Thanks for the help. I'll check the headlights and see if the battery is the problem.
  • jlflemmonsjlflemmons Posts: 2,240
    Well, if you are seeing 14vdc with the engine running, you know your alternator is working!
  • My '96 would turn over good and only start was the COIL! It was arcing and grounding out to the engine. Would turn over, but no fire! Replace coil and wire and problem all fixed!! It took us replacing all kinds of parts relating to the ignition to find this out!! CHECK YOUR COIL!! If it sparks like a christmas's no good!!
  • jlflemmonsjlflemmons Posts: 2,240
    Good point. Easy trick is if the car will start, mist water onto the coil and wires. Can get exciting to watch at night, but will tell if the insulation is breaking down. Since you identified this as your problem, I have had a GM mechanic tell me this is a common problem on the 4.3L because the coil wire tends to rub up against a bracket between the coil and distributor cap.
  • kindvaskindvas Posts: 1
    I have had to put in an after market EGR gasket with a screen on a '95 GMC Sonoma and now a '95 Chevy S-10 Blazer because of this same problem. The screen prohibits the chunks of carbon from clogging the EGR valve in the "open" position which in turn allows gas to keep flowing. In both cases, the EGR valve was stuck open because of chunks of carbon lodged in it.

    Just a thought. Good luck!
  • tim6261tim6261 Posts: 2
    My 98 4.3 jimmy starts for a -second -then dies I've replaced the fuel pump mass airflow sencer fuel filters good and check the presser holds at 60 lbs even when starting . If I put gas in throtle body it will run fine hate to send it to a shop plz help...
  • tim6261tim6261 Posts: 2
    My 98 4.3 jimmy starts for a -second -then dies I've replaced the fuel pump mass airflow sencer fuel filters good and check the presser holds at 60 lbs even when starting . If I put gas in throtle body it will run fine hate to send it to a shop plz help...
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