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04-28-2016, 10:27 AM | #1 | |
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02 Blazer Has Power Won't Crank Won't Start
Went to start the truck, turned the key dash lit up, fuel pump primed, turned the key all the way and nothing. Truck did not even try to turn over, headlights did not dim, no starter, no crank.
I checked/tested the following: Battery and terminal connections good fully charged 12.3v Ran battery charger on slow charge 10-15 min (quick) to full 13v Wiring to starter good Relay box under hood - has power Starter relay has wiring diagram on it tested good. Every ignition related fuse in the relay box all good Every ignition fuse in the drivers side dash fuse box good I wiggled the ignition switch while turning every possible way no crank I ran the gearshift lever through all the gears, tried to start it in neutral no crank Rolled the truck a little, put in park no crank For some reason I decided to double check the # 24 RDO IGN fuse - it was fine. With the fuse still out I tried to start the truck and it STARTED! I turned the truck off, replaced the fuse and the truck started again and, so far, ever since. I do not think the # 24 fuse had anything to do with it; I just got lucky. Can anyone think of anything else I should check? |
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04-28-2016, 01:21 PM | #2 | |
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Re: 02 Blazer Has Power Won't Crank Won't Start
When you were checking wiring did you have 12v on the small wire at the starter during cranking? I would suspect a bad starter.
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04-28-2016, 03:54 PM | #3 | |
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Re: 02 Blazer Has Power Won't Crank Won't Start
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04-28-2016, 07:32 PM | #4 | |
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Re: 02 Blazer Has Power Won't Crank Won't Start
12.3 volt is not good- I'd rather see 12.6 volt on a battery- could be indicative of a bad battery cell- I'd have the battery tested- Autozone will do it for free.
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05-01-2016, 11:19 AM | #5 | |
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Re: 02 Blazer Has Power Won't Crank Won't Start
I did not check voltage while I was cranking it and I was alone. I guess I'll have the battery tested.
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05-01-2016, 11:57 AM | #6 | |
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Re: 02 Blazer Has Power Won't Crank Won't Start
Yes a good battery should have 12.6 but 12.3 should be plenty to crank
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05-01-2016, 12:24 PM | #7 | |
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Re: 02 Blazer Has Power Won't Crank Won't Start
That's what I thought and it DID crank...eventually.
I bought a cheap OBDII reader. I'll see if I get anything. |
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05-01-2016, 01:16 PM | #8 | |
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Re: 02 Blazer Has Power Won't Crank Won't Start
Oh yah I had to reread the original post forgot it started running.
Have you had any problems since then? The battery is worth checking. |
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05-01-2016, 01:19 PM | #9 | |
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Re: 02 Blazer Has Power Won't Crank Won't Start
No, it's been starting fine. (so far fingers crossed)
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05-04-2016, 10:30 AM | #10 | |
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Re: 02 Blazer Has Power Won't Crank Won't Start
Well, I had the battery tested and it was bad. Every bad battery I've ever had at least tried to crank and the head lights dimmed. I have never run into a bad battery that would light up the dash and the headlights but not start the vehicle. Thanks for all your help.
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05-04-2016, 08:12 PM | #11 | ||
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Re: 02 Blazer Has Power Won't Crank Won't Start
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05-04-2016, 08:36 PM | #12 | ||
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Re: 02 Blazer Has Power Won't Crank Won't Start
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07-26-2016, 09:36 AM | #13 | |
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Re: 02 Blazer Has Power Won't Crank Won't Start - HELP AGAIN PLEASE
OK Trying to restart this thread. I am still have starting issues. The other day my alternator died (voltage regulator). No problem I don't even remember changing the alternator ever, it's been hot and I've been using the AC a lot. I put in a brand new (not reman) alternator and off I went all weekend.
Monday is good...go to start the truck on this morning Tuesday and it won't start. I have full dash lights and headlights but when I turn the key nothing happens-won't even try to start and no visible draw from all the lights that are on. 1) Is it possible that an alternator with a voltage regulator going bad caused such a load on a four month old battery that my battery is no good now? I cannot believe that there is a short some where all of a sudden, I think these problems are related. Wanted feedback before pulling fuses one by one to find a nonexistent short. Any guesses PLEASE??? 2) Also, anyone know if a 100 amp alternator is what comes stock with the truck? I have power everything and AC but no aftermarket electronics. Last edited by Brndo; 07-26-2016 at 10:53 AM. Reason: Forgot |
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07-26-2016, 06:35 PM | #14 | |
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Re: 02 Blazer Has Power Won't Crank Won't Start
I'm really not into the New Body Style issues, but from your posts I may venture there.
Monday is good...go to start the truck on this morning Tuesday and it won't start. I have full dash lights and headlights but when I turn the key nothing happens-won't even try to start and no visible draw from all the lights that are on. Just from this post I would suspect either the "starter relay" or the "Ignition switch". Good luck to you.
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07-31-2016, 08:24 AM | #15 | |
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Re: 02 Blazer Has Power Won't Crank Won't Start
Well, I gave up and took it in. They said it was the starter. I'll have to look for a thread about diagnosing a starter problem. It's just funny how once when this happened my truck started after being jumped by a starter cart.
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Tags |
2002 , blazer , crank , power , start |
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