Question about 1998 Chevrolet S-10 Pickup

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1998S10 blazer hard starting only when cold and or @ 1/4 of a tank.

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I would start by checking the fuel pressure and volume you may have a weak pump.

Posted on Oct 29, 2008

  • Don Minor
    Don Minor Oct 29, 2008

    It wolud be best if you checked it when it was cold and low on gas. when its not starting. Some pumps will not act up all the time and may check ok.

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I HAVE A 2001 CHEVROLET BLAZER THAT STARTS HARD ON COLD MORNINGS. NO RED LIGHTS OR CODES BEING SHOWN. TUNE UP RECENTLY COMPLETED (PLUGS, WIRES, CAP ROTOR). ONCE STARTED BLAZER RUNS FINE AND STARTS FINE...


SOUNDS LIKE ITS GOING TO NEED A NEW FUEL PUMP THE FUEL IS DRAINING BACK INTO THE TANK AND IT HAS TO BUILD UP FUEL PRESSURE AGAIN BEFORE IT WILL START

Nov 04, 2013 | Cars & Trucks

1 Answer

2000 blazer will not start with less than 1/2 full of gas


i am not 100% sure the fuel pump is located on the top 1/2 of the tank so it need about 3/4 tank of fuel to breath.

Mar 18, 2013 | 2000 Chevrolet Blazer

1 Answer

My 2000 chevy blazer hesitates when accaleration and doesnt start


YOU NEED NEW SPARK PLUGS AND WIRES.CLEAN THE FUEL INJECTORS.BUY A BOTTLE OF INJECTOR CLEANER POUR IN FUEL TANK OF GAS ALSO.CHANGE FUEL FILTER THIS LITTLE TUNE UP SHOULD HELP.

Jun 01, 2010 | 2000 Chevrolet Blazer

1 Answer

2000 blazer having trouble cold starting in the morning. it's almost like it's not getting fuel to turn over...it feels like it wants to start but putter and turns off. mostly happens when the car is cold...


Have you the vehicle tuned up lately? Bad spark plugs will cause hard starting in cold weather also, the fuel filter could be plugged or it may have moisture in it. I guess, I would have those items checked and also, have the fuel pressure checked, the pump may be getting weak.

Mar 03, 2010 | 2000 Chevrolet Blazer

2 Answers

My blazer has a new fuel filter, egr valve and


As a quick test,fill-up the tank and do not top off.

Monitor the starting problem.

If you're starting OK until BELOW 1/3 of the tank then it's a weak/failing fuel pump.

=====
Mass air flow (MAF) senor provide air temp/density to the computer.

Buy a can of MAP cleaner and follow the instruction on the can.
=====

Nov 11, 2009 | 1994 Chevrolet S-10 Blazer

2 Answers

Hard start on cold mornings; replaced plugs but did not fix; fuel filter?


If the vehicle runs normally otherwise, your fuel filter is likely not the problem. A plugged fuel filter would likely cause misfiring under load, such as when going uphill.

Make sure, by the way, that you do not touch the gas pedal when starting. That could make it hard to start.

Old fashioned cars used a choke to feed it more fuel for a cold start. Modern cars use a computer to feed the fuel injectors more fuel on a cold start, and rely on a sensor or two to know that it's cold.

Couple of possibilities here:

a) Has the check engine light been on? If you have a bad sensor, such as oxygen, throttle position, or coolant temp sensor, the computer may have an error code stored in it's memory about this.

b) How many miles on the vehicle? Some other problems could be leaky injectors, leaky injector 0-rings, or intake manifold air leaks, all making it difficult to start when cold.

A fuel pressure gauge on the fuel rail would tell you if a leaky injector is causing the fuel pressure to drop....then a cold start would be difficult if there is no pressure in the system.

If there is a leaky o-ring or intake manifold, the vehicle will typically misfire and/or light a check engine light.

Oct 16, 2009 | 2000 Chevrolet Blazer

1 Answer

Starts hard when cold


Faulty idle control system/sensor, or intake gaskets leaking. If you've been using starting fluid on it, that would be why. Don't ever use starting fluid on a gas engine. If you're lucky enough to not blow your own head off, you aren't going to be lucky enough to cause extreme engine damage. ie: blown intake gaskets, bent valves etc.

Aug 09, 2009 | 1998 Chevrolet Blazer

1 Answer

Hard Cold Start


if the check engine light is not on?do a tune up on it,cap,rotor,plugs and wires,fuel and air filter.

Apr 12, 2009 | 2000 Chevrolet Blazer

1 Answer

1995 JIMMY HARD TO START & SOMETIMES WON'T.


Hi: Have owned 9 Blazers and Jimmy's. have never heard of a cold start switch on a Jimmy. If the engine is fireing I would rule out the coil for now. What you are describing sounds to me like low fuel pressure, if the pressure is not around 60 PSI then the injectors will not function correctly. If you have ever driven the vehicle for a while, stopped somewhere and it wouldn't start unril it has sat for a while then chances are the problem is the fuel pump located in the fuel tank.

Jan 09, 2009 | 2000 GMC Jimmy

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