Question about 1994 GMC Sonoma

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Truck won't start

While driving my truck suddenly stop running, could not get it re-started, when I try turning it over the engine whining and after a fet cranks of the key it will turn over but for only a second or two and then it go back to winning like something not engaging. can't seem to figure out the problem

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  • 218 Answers

You don't say what size engine you have but it sounds like the timing belt has stripped a few cogs(4 cyl) or the timing chain has jumped(V6). Either way is not good. If that's what has happened, continuing to turn it over will probably damage the valves/head if it hasn't already. The 'whining' sound is more than likely the sound of no compression. Valves staying open all the time because of the broken/damaged belt or chain. You will most likely need a mechanis/repair shop.

Posted on Mar 20, 2014

  • scott porter
    scott porter Mar 23, 2014

    I checked the timing chain and sprockets ans they seem fine, the truck is a v6 vortec 4.3l

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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MrScary66613
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SOURCE: ignition won't stay in running position.

You are gonna need a New Ignition. Will solve this Problem.

Posted on Jan 04, 2009

limotec
  • 33 Answers

SOURCE: 1988 Chevy Cherokee truck won't start

Hello
I have come across this problem before & all it was 10amp fuse with a bad Connection under the bonnet so if you check all the connections you will probley find the one playing up. or you pintail vavle could be stuck
hope this helps
www.limotec.co.uk
Paul

Posted on Jan 11, 2009

  • 188 Answers

SOURCE: Truck losing power and service engine soon light on

Like to other guy said, give it a tuneup. Also try SEAFOAM to clean carb up of slug. Also check to make sure the butter fly for the choke has not come loose, causing it the choke it down. Failed choke pull-off.

Posted on Feb 02, 2009

  • 16 Answers

SOURCE: Will not start on first attempt but will on second

fuel pump might be going next time u start your car just turn the key to the on position do not start you should be able to hear the pump kick on and start to pressurize the tank.after a few seconds go ahead and see if it starts on the first crank, if u drive around a lot with a less then quarter tank of gas would recomend to keeping your tank at least a quqrter, because the fuel is what helps keep the diaphram cool, driving around with low gas levels for extended periods of time will cause diaphram to go out faster.if its not, then if you are getting extended crank when u start it up the first time, i would also have the fuel pressure regulator at the top of my list of things to check.

Posted on May 08, 2009

jmgldsmth
  • 1889 Answers

SOURCE: 96 Yukon (vortec) not getting fuel.....wont start.

I trust this is a throttle body fuel injection system?
If it is: purchase a "noid" for your vehicle at an autoparts store this little tester will let you know if your injectors are working. if they are not; they will not be spraying gas into your "bowl" the injectors are little electrical powered solenoids; check fuses, fuseable links and, the efi module.

Posted on May 10, 2009

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