Question about Chevrolet Blazer

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1988 chevy s10 blazer, starts but runs rough and it seem like the power keeps surging. replaced battery and terminals, cad. converter, ignition modulator no luck

It seems as if I am having an electrical problem, s10 starts but runs really rough & will die at stops or when you slow down. got it diagnosed & they said it was the ignition modulator but it has been replaced with no luck still same issue, the battery terminal was stripped so the battery and term. replace but again no luck, cad. converter replaced no difference. could it be a fusible link? maybe an exposed wire shorting it out?

Posted by Anonymous on

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  • Chevrolet Master
  • 8,071 Answers

Check out the fuel delivery system and all plugs for spark.

Posted on Jul 02, 2017

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 9 Answers

SOURCE: 1988 chevy suburban charging system

First check alt At The Back of Alt Big Red Wire Were hooks to Post (stud) Do you have voltage ?? How Much??
What Voltage do you have at same Place with Engine Running ??
Now At wires Were they plug into Alt ,Top. Wires in White Plastic Clip, Do You Have Powe With Key On ?? How Much Voltage??
Jump across the 2 in the clip (with Engine Running)ONLY TEMPORARY!! Do You Have Voltage at Battery ?? How Much??
If Over 13volts With Clip On (Jumped) You Need A Internal Voltage Regulator ..
Is Batt Light On on Dash ??? Theres A Lot Of Testing You Can Do !!! And I will Need More Infomation to Keep Going ... These are just some Possible Problems No Way In Depth ...
Could Be a Number of things Or May be Just as Simple As a Blown Fuse, Dirty Batt Cables ETC etc etc I Hope It Puts You On The Right track !!!!!!!!!!

Posted on Jan 07, 2009

yotaguy
  • 232 Answers

SOURCE: battery gets drained sporadically.

The large fusible link goes to the positve battery terminal on the back of the alternator,the alternator has a short,of course pull it and have it tested before replacing it.

Posted on May 15, 2009

  • 534 Answers

SOURCE: no electrical power to anything - even dome light.

Check battery and chassis earth connections are ok.
Check for 12v power at the fuse/power disrtribution fuse bus; - if no power there, trace circuit wiring back to battery.

Posted on Jul 12, 2009

Rebgagnon
  • 382 Answers

SOURCE: 1997 Subaru Outback Car

If you are getting sparks at the positive cable when attaching I would suspect a hard short in the system. Check that the starter has not shorted.

Posted on Feb 15, 2010

  • 1 Answer

SOURCE: 1998 chevy blazer running really rough. It used

I had a similar problem and just happened to unplug the temperature sensor for the computer and the engine started running smooth.
So I replaced the temperature sensor and all was well!

Posted on May 19, 2010

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