Question about 1996 Chevrolet Blazer

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96 4x4 Blazer runs rough when you first start going ,when you give it the gas it's having a hard time ,but smooths out ?only low RPM

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  • Chevrolet Master
  • 753 Answers

Very common problem the fuel pressure regulator under the plenum is leaking and causes a rich running condition on start ups and if bad enough can cause it at idle all the time

Posted on May 02, 2015

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6ya6ya
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Posted on Jan 02, 2017

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csmock132
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SOURCE: 93' 4.3 chev runs rough at times

Have someone turn the key on while you watch the injectors. If any gas leaks out of the injectors, without cranking on it) replace the o'rings around the injectors.

Posted on Mar 12, 2009

jaa278
  • 65 Answers

SOURCE: 2000 Chevy s10 2.2L very rough idle at low rpm

run a fuel pressure test, if that checks out fine it may be a faulty coil pack or ignition control module

Posted on Mar 01, 2015

  • 14036 Answers

SOURCE: running roug at low idle, smooths out at 2500 rpms

change plug and wire if its been a while most cars have 90000 miles platinum plugs in them.but the wires wear before plugs.so change plugs and wires.+clean fuel injectors .change fuel filter and air filter.if car still run rough your idling to low.have idling check .

Posted on Jun 06, 2009

  • 1 Answer

SOURCE: Rough idle

I took mine in to change the plugs and they said there are four O2 sensors in the fuel mixture system and two were bad. I didn't replace them since they were a little pricey ($500 to replace both) and I have 103,000 on the car. Has very similar roughness and occasional oscillations, but no stalling. Hope this helps.

Posted on Aug 25, 2008

  • 4 Answers

SOURCE: 76 volvo 240 car idles and low speed is rough,

It could be the filter. Has the fuel been changed after storage? I would also thing the Carburetor or the fuel injectors might need to be cleaned.

Posted on Dec 19, 2008

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Hyundai Tucson 2009 give P0193, change complete rail with sensors. Change High pressure pump, low pressure pump in the tank but still not starting. After holding the key in the start position for almo


A few things come to mind.
After a fuel failure like that it is possible you have fouled the plugs, causing a hard start, rough idle.
Also, if it was run any length of time in that state its possible the catalytic converter has become slightly clogged not allowing the rpm's to climb.
I would start with a quick check of the plugs.

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It sounds like your fuel filter is clogged, or the fuel pump is failing. I would change the filter first and see if that does it.

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I have a low mileage 93 s10 Blazer with 4.3 V6 that sometimes runs smooth while at other times behaves like it has jumped timing,shakes,smokes stalls. Also the break pedal is extremely hard to push do


CK FOR A VACUM LEAK. IT SHOULD BE FAIRLY EASY TO FIND. YOU SHOULD HEAR A WHISLING SHOUND WERE THE LEAK IS CK ON THE BACK OF THEINTAKE MANIFOLD THERE IS I VACUM TEE THAT FAILS OFTEN. HOPE THIS HELPS BILL

Dec 11, 2012 | 1993 Chevrolet S-10 Blazer

1 Answer

95 s-10 blazer idles rough


CHECK FOR A LEAKING INTAKE MANIFOLD GASKET, USE A CAN OF CARB SPRAY AND SPRAY AROUND THE TOP OF THE ENGINE, IF U HIT ON A LEAK U WILL HEAR THE ENG CHANGE TONE AND IDLE RPM.

Jun 25, 2009 | 1995 Chevrolet Blazer

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My truck is idlin low


my truck runs about the same but if the truck is having a hard time staying running maybe the computer in the truck is going out and giving the wrong messages to the truck to run right

May 15, 2009 | 1993 Ford Ranger SuperCab

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Misfires, runs rough, black smoke-90 blazer


if it's carburated, make sure your butterflies are opening.

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Blazer runs rough when running at 45 to 55 mph


the problem was low transmission fluid. added half a quart and the problem went away.

Sep 28, 2008 | 2000 Chevrolet Blazer

2 Answers

76 volvo 240 car idles and low speed is rough,


It could be the filter. Has the fuel been changed after storage? I would also thing the Carburetor or the fuel injectors might need to be cleaned.

Jun 30, 2008 | 1982 Volvo 240 Series

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