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Hello. I am new to this great forum. I need your help

Tiny
ANDY'S TEAM
  • MEMBER
  • 1998 CHEVROLET BLAZER
  • 110,688 MILES
Hello. I am new to this great forum. I need your help. I live in Venezuela and I have a 1998 Blazer, 4.3 Vortec engine VIN "W" LS.

The truck starts in the morning and the board (gauge) shows a load above normal for the battery meter. Then the truck fails when:

1.- At 45 minutes (approx.) Has been on, or having covered 20 km.
2.- If you operate the brake pedal "many times", without crossing streets.
3.- If descends a hill and stops immediately
4.- When you turn the A / C
5.- When using turn signals

THE TRUCK STARTS "random misfire"

I performed the following work:
1.- Cleaning injectors, "No Change"
2.- Change spark plugs and wires
3.- Change alternator
4.- Change coil and ignition module
5.- Change distributor cap and rotor
6.- Change thermostatic
7.- Change fuel pump
8.- Change Position Sensor Throttle (TP)
9.- Replacing the sensor idle air control (IAC)
10.- Check the ground wires
11.- Change of battery

What might be happening?

note: THE AIR CONDITIONING WAS INOPERATIVE
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Tuesday, October 11th, 2011 AT 5:19 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,874 POSTS
Is the alternator gauge below 12 volts?
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Tuesday, October 11th, 2011 AT 5:25 PM
Tiny
ANDY'S TEAM
  • MEMBER
  • 2 POSTS
Hello!
Thank you for your quick response.
The alternator brand a little over 12 volts. 12.3 approx.
Sorry for my English. This is not so good.
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Tuesday, October 11th, 2011 AT 8:57 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,874 POSTS
The alternator should be putting out around 14+ volts with the engine running. Check the fuseable link between the alt and the battery.
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Wednesday, October 12th, 2011 AT 12:23 AM

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