Question about 1999 Chevrolet Tahoe

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MISFIRE I GOT A MISFIRE ON MY 99 TAHOE I CHANGED THE PLUGS,ROTOR,BUT I STILL HAVING PROBLEMS

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You may have an injector not working. Perform a balance test. All you do is unplug each injector one at a time. The car should develope a miss at each one that you unplug. If you have one that doesn't seem to make a difference whether it' plugged in or not, this is the injector that is causing you problems.

Posted on Nov 01, 2008

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What trouble codes are comming up?

Posted on Nov 01, 2008


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Posted on Jan 02, 2017

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Why the loss of power and po300 code?


HARD TO SAY WITH OUT BEING THERE BUT THIS MIGHT HELP .
Crankshaft sensor Was the trouble with my 99 Chevy truck after replacing many components like coil cap rotor wires and so on .
http://www.obd-codes.com/p0102 Code P0300 Causes and Fixes Code p0300 is a code that is generated when your engine has a misfire that is not related to only one cylinder. Sometimes this code will be set in addition to other codes such as p0301 which means that there is a misfire on cylinder 1 (cylinder 1 is the number one cylinder when looking at the firing order. It is generally the forward most cylinder on the engine.). If these engine codes are present as well the you should diagnose those first as they are probably causing code p0300.
This code will set your check engine light and needs to be fixed as soon as possible. If it is not then you will probably need to replace your catalytic converter as well as the problem that is causing your misfire.
There are many causes for this obd code. Since it is a "random misfire" or "multiple misfire" this means that the misfire is on different cylinders and not just one all the time.
Common Causes
  • Low Fuel Pressure
  • Vacuum Leak
  • EGR system malfunction
  • Internal Engine Problems (such as low compression)
Less Common Causes
  • Faulty Coil
  • Faulty Spark Plugs and/or Wires
  • Camshaft or Crankshaft sensors
  • Ignition module
  • Computer

Jun 12, 2014 | 1998 Chevrolet Tahoe

1 Answer

99 tahoe running rough


Fuel filter,clean throttle body.

May 05, 2013 | 1999 Chevrolet Tahoe

1 Answer

1997 Chevy Tahoe muti misfire and smell of gas


try to change the rotor and the distributor cap and the high tension wire.

Dec 07, 2012 | 1996 Chevrolet Tahoe

1 Answer

P0300 on 99 suburban


IF NO DRIVABILITY CONCERNS, CHECK FOR CALIBRATION UPDATE,IF MISFIRE POSS INJECTOR PROBLEM OR COULD BE AS SIMPLE AS WATER IN FEUL

Sep 27, 2012 | 1999 GMC Suburban

2 Answers

HI I have a 99 Jimmy with 4.3 engine. I have bad missing in the engine, I have replaced all wires, plugs, cap and rotor. I have replaced the EGR valve, I have replaced the fuel pump and now the injector...


Please help us. I have the same problem with my 99 Jimmy. I was driving on the highway going 70 and then it started missing. Changed all the plugs, wires, rotor and cap but to no avail. HeLP! please email me if you have a solution to this problem. (apollo.morelos@hotmail.com) thanks a bunch.

Oct 29, 2010 | 1999 GMC Jimmy

2 Answers

1996 tahoe , codes are showing random misfire


Do an injector balance test and a cylinder leakage test. Lets make sure its not fuel related. Most important lets make sure you don't have a vacuum leak.

Apr 06, 2010 | 1996 Chevrolet Tahoe

1 Answer

99 tahoe 350. misfire #3. new cpi unit, plugs,


coil packs? or dist engine? check coil packs for cracks and leakage on distributor egines check for side to side play in the dist shaft if any play then change it!

Jan 17, 2010 | 1999 Chevrolet Tahoe

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