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93 s10 blazer with 4.3 liter vortec won't stay

Posted by tiffany trotter on

  • Anonymous Mar 12, 2014

    02 s10 blazer guide

  • Anonymous Mar 12, 2014

    02 s10 blazer

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1 Answer

Marvin

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  • Cars & Trucks Master
  • 85,239 Answers

You first need to run a fault code test on this engine, to do that go here.

Posted on Oct 10, 2012

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5 Related Answers

pippall

Philip Long

  • 1486 Answers

SOURCE: 1987 chevy S10 engine idle problem

relace the throtle air idle valve.The temp switch will allso cause this problem.

Posted on Jul 19, 2009

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Anonymous

  • 335 Answers

SOURCE: 1993 pontiac grand prix 3.1 liter

the 3.1 had some EGR problems, EGR valve stuck open, blown diaphrams, Plugged passages Im not saying that is all your problems and I believe yours has whats called a linear EGR about $350.00 from the dealer (and that is the only place you ever consider buying such a critical part for the emissions system regardless of the cost)
That car is so antiquated as far as computers go that relying on the codes is nearly pointless! Map code can set because of low engine vacuum which you will have with a poor running engine, Check for 5 volt reference voltage at the TPS and MAP with the key on and engine off if no 5 volt reference I suspect a Computer. Computer Ground is on the Thermostat housing and needs to be clean and secure.
There is a legit test in the GM factory manual called the TAP TEST take the ECM (computer) and slap it with an open hand, if the symptoms change the ECM is bad it's very common in the early-mid 90s for the computers to go bad in one way or another the circuit boards come loose and suffer also from cold solder joints.
Make sure the wires are on the correct plugs and hopefuly you used factory plugs and wires and No split fire or bosch plugs only AC delco
Make sure you have good spark on all 6 cylinders.
Contact me at [email protected] with the results and any feedback or questions

Posted on Sep 19, 2008

Anonymous

  • 1 Answer

SOURCE: 2000 chevy blazer, truck cranks

Does your battery go dead?

Posted on Dec 18, 2008

Anonymous

  • 4 Answers

SOURCE: have a 1994 chevy s10

You need to check and make sure you have fuel pressure, then check for spark at ignition, if those check out then check for pulse width at the injectors. That basically is the electrical signal which tells injectors to spray fuel. Use what is called a Noid light on injector pulse width check. that will eliminate all possibilities other than internal issues with engine. I.E. broken cam, broken timing components, obviously if all I mentioned checks out then run compression test. Good Luck

Posted on Jul 15, 2008

Anonymous

  • 541 Answers

SOURCE: My 4.3 vortec engine in my s10 blazer won't start

try the ignition module. if it is bad it does not send the signal for the the throttle body injectors to spray feul.

Posted on Oct 23, 2009

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Help


Sounds like it needs a new fuel pump. Get a Fuel Pressure Gauge and check it make sure it up to the Specs,What I think is about 35 to 40 psi without looking in my book. Also you would want to make sure the fuel filter was changed, Your getting spark and fuel, But You stated your able to start it with starting fluid so I would say it must be a fuel pump problem.. I hope that help you out. If not get back to me and we can try some more trouble shooting. Take Care, Bear

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