Question about 1994 Chevrolet S-10

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My 1991 chevy truck S10 Tahoe 4x4 cut out on me all of a sudden. It's not the fuel pump i checked. It's not the timing chain. There is no spark going to the coil or to the distributor. I changed coil. Still no spark to coil. Please advise.

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  • melemel Dec 14, 2008

    i went to the store and when i came out my chevy s10 was not starting .checked fuel pump thats working and all good fuses

  • Daniel Jenkins
    Daniel Jenkins May 11, 2010

    Have you checked your relays or fuses? The Ign system does have a relay... That would be the first thing I check.

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Also check your alternator, mine did the same and it ended up being the alternator

Posted on Aug 22, 2008

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Replace the ignition module.

Posted on Aug 20, 2008

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What are the timing specs for a 1991 chevy s10 blazer 4x4 4.3? changed timing chain and gears and timing is off. got marks together but still won't crank.


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93 chevy s10 wont start


Does it crank the engine ? If not take a look at the starter connections and the starter.Replace the starter if nessesary.
Ok, now that you got the most common problems out of the way, you should check for spark at the spark plugs. Remove a spark plug and attached to the wire. Get a good pair of rubber gloves and put the thread of the plug to ground and crank the engine. The spark plug should spark a bluish spark. If it has an orange spark the spark plug or wire may be bad. if it does spark fairly good.

Check the fuel pump. if it has an electric fuel pump you should hear it when you turn the switch to on. It is a whirring sound. if you can't hear it. the Pump is bad or the shutoff valve turned off the fuel system. Check it to see if the button is up. If it is then the valve clicked off. Press it down. If it is down and there is no fuel the fuel pump is bad.

If it is a mechanical pump, take off the hose to the carb if it does have one. crank the engine . It should pump gas right away.

If it does have spark or fuel to the sytem, then it is a sensor or other problem.You will have to get a trouble code for it. to narrow everything down.

Check the timing belt or chain to see if it is still good and tight. If it is not your timing belt or chain skipped or cut off. you will have to replace it.

I hope you can get some help from this info . good luck

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1 Answer

1998 Chevy tahoe Hard to start when cold


Hello, yes the check valve is in the fuel pump assembly. The check valve is leaking and the pump will burn out soon. Unfortunately the aftermarket fuel pumps can be very unreliable. A good portion of problems we see on this site are from people who replace the pump sometimes twice and it still doesn't work.

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1 Answer

1991 chevy s10 blazer


Check the fuse under the dash. Did you replace the inline fuel filter? If not, you could loosen the line going into the filter then turn the key to the on position. The pump should run for about 2 seconds then the relay should kick off. Turn off the key for approx. 5 seconds then cycle key back on and the pump should cycle again. If you get a 2 second burst of fuel each time then the pump is cycling. Install a new fuel filter and check the grounded wire by the tank. Hope this helps. :)

Nov 03, 2008 | 1993 Chevrolet S-10 Blazer

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