Alternator problems

Tiny
CMINGOY
  • MEMBER
  • 2001 CHEVROLET BLAZER
I have a 2001 blazer, it was giving me problems, had it tested said alternator was bad, had that replaced and the battery also. Ran fine for about a month, now it is doing the same thing again. Went to start it, no clicking no nothing, put it on charge, it started but now will only stay running as long as it is in park. After I charged it, the gate ajar light came on as it did before, and the window popped open before, this time it didn't but had to open it and shut it and light went off. Had no signs of any problems, came home from work, 6 hours later, it was dead
Tuesday, March 10th, 2009 AT 8:55 AM

7 Replies

Tiny
RHALL77
  • MECHANIC
  • 3,361 POSTS
Sounds like there maybe a short in the rear gate. Have it inspected for a short that is causing your battery to drain
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Tuesday, March 10th, 2009 AT 9:07 AM
Tiny
TCSILVERBACK
  • MEMBER
  • 1 POST
  • 1998 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
98 blazer not charging, alternater fine, battery fine. What's next?
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Thursday, April 30th, 2020 AT 11:28 AM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the RDO/Batt fuse
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Thursday, April 30th, 2020 AT 11:28 AM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
If fuse no.19 is okay-check wiring and the computer controlled of the alternator's field generation circuit
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Thursday, April 30th, 2020 AT 11:28 AM (Merged)
Tiny
BSEXTON
  • MEMBER
  • 1 POST
  • 2001 CHEVROLET BLAZER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 145,365 MILES
MY BLAZER HAS A HARDE TIME STERTING HAVE TO CRANK IT SEVERAL ATEMPTS TO GET TO START. ALSO WHEN IT STARTS THE CHARGE METER WHILE YOU SET STILL DROPS BELOW 9 VOLTS BUT WHEN YOU GO IT CHARGES AT 14 VOLTS
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Thursday, April 30th, 2020 AT 11:28 AM (Merged)
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,749 POSTS
Sounds like a weak fuel pump causing extended crank, a easy way to tell is to spray a little starter fluid into intake when its cold and see if it starts and runs fine
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Thursday, April 30th, 2020 AT 11:28 AM (Merged)
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,749 POSTS
Before replacing pump make sure you have power there when cranking on the gray wire because there is a slight chance of a bad fuel pump relay.
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Thursday, April 30th, 2020 AT 11:28 AM (Merged)

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