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1991 Chevrolet S10 Blazer Question: replaced started & now doesn't want to start all the time!

 

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sandraleasure, Hanford, CA, August 10, 2009, 07:04
 Rookie

im fed-up! put $1000 in new parts! runs great! but just wont start until the control module lite on my dash flashes. thats when it will start! I need some help or adviser!!! PLEASE!!!

2 Answers
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    August 10, 2009, 10:25
     Master

    You probably have a anti-theft related problem. You need to scan it. Don't give up. Does your key have a chip in it?

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    sandraleasure, August 10, 2009, 13:15
     Rookie

    MY TRUCK IS A 91 CHEVY S10 BLAZER 4X4 V6 4.3 VORTEK TROTTLEBODY. THERE'S NO CHIP THE KEY OF THIS MODEL. i WISH THAT WAS IT AT THIS POINT! LOL BUT NO IT WASNT DOING THIS UNTIL I HAD THE STARTER REPLACED! ALL NEW WIRES, SPARK PLUGS, DISTRIPUTOR CAP, AIR FILTER, FUEL PUMP SENDING UNIT STAINER, MAP SENSOR, HAD THE BATTERY AND ALTINATOR TESTED, ITS NOT THAT EITHER! I'M FED-UP ALREADY AND DONT HAVEANY HELP!!! bUT I'M ALMOST POSSITIVE IT HAS TO DO WITH THAT STARTER, IT SEEM'S LIKE THE STARTER WASN'T INSTALLED PROPERLY! IT WILL START AFTER ATTEMPTING TO TURN IT OVER SEVERAL TIMES! BUT NOT UNTIL THE CONTROL MODULE LIGHT ON THE DASH BLINKS. THATS WHEN I HAVE HOPE ITS GOING TO START!

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    backyard tech, August 10, 2009, 18:21
     Master

    Would you please tell me what light is lighting. Do you have a strong spark at the plugs. It could be the coil, ign module or distrbutor.

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    backyard tech, August 10, 2009, 18:31
     Master

    Vehicle Application: 1990 Chevrolet G30 5.7L, GAS, Vin K, Eng Cfg V8 1992 GMC C1500 Sierra XC 5.7L, GAS, Vin K, Eng Cfg V8
    1991 GMC G2500 Vandura 5.7L, GAS, Vin K, Eng Cfg V8 1993 Chevrolet K1500 5.7L, GAS, Vin K, Eng Cfg V8
    1991 GMC V1500 Suburban 5.7L, GAS, Vin K 1994 Chevrolet K1500 5.7L, GAS, Vin K, Eng Cfg V8
    1992 GMC C1500 Sierra XC 4.3L, GAS, Vin Z, Eng Cfg V6

    Customer Concern: Stalls when placed in gear or when turning the power steering.
    Tests/Procedures: 1. Test the pick up coil output while cranking, pick up coil disconnected, should have 700 millivolts AC.

    2. If lower than 700 millivolts, replace the distributor shaft and the pick up coil.

    3. Replace the distributor shaft and pick up coil.

    4. Test output again to determine if the new shaft is OK.

    5. Check for vacuum leaks, upper and under side of the intake manifold.
    Potential Causes: Distributor Shaft
    Pick-Up Coil

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  • Answer #2

    Visitor, June 13, 2010, 12:05

    i replaced a lot with my truck too it has start up problems for 3 months now. i replaced the alternator the spider in the intake and the battery ,fuel filter, fuel pump now im going to put new spak plugs and wires next weekend its gotta ruff idle, then im thinking the ignition switch?

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    Visitor, March 28, 2011, 17:56

    Try your ICM? Fixed mine for a few weeks, now same problem, starts when fuel starter is used but not getting fuel, wont stay running. I'v done the fuel relay, filter, pump with strainer and new harness, bought a new computer and now I get error codes... feel like iv accomplished something... Now the computer says I need a coolant temp sensor, could this be a fail safe for the engine?.. Ill reply if this changes anything.

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