Question about 1996 GMC Jimmy

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96 jimmy 4.3 runs good first 2 or 3 min then random cyl mis fire

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  • GMC Master
  • 3,103 Answers

Look for vacuum leaks in the hoses on the emissins controls..some are heat activated

Posted on Jan 17, 2013

  • j.d. malone Jan 17, 2013

    Thanks, but unable to find vacuum leak, car has set up for about a year, only used 4 or 5 times. Thanks again for the effort.

  • j.d. malone Jan 25, 2013

    No chance to go through all of the tests yet, but hope to find a vacuum problem

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Posted on Jan 02, 2017

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SOURCE: firing order for gmc jimmy 1999

-Drivers side starting at the front of engine: 1-3-5
-Passenger side starting at fornt of engine: 2-4-6
92850034.gif

Posted on May 20, 2009

  • 880 Answers

SOURCE: 1997 GMC jimmy 4 dor SLT Have 4 low on the 4 wd no

linkage adjustment

Posted on Dec 31, 2009

Magaiver
  • 707 Answers

SOURCE: 2000 gmc jimmy 4.3L misfire on cyl 4 and cyl 5 at

Clean the egr valve which would cause rough ideling and misfire........Hope this helps u out.

Posted on Aug 15, 2010

SOURCE: 96 Jimmy runs better in cold weather than warm

Hi Buc, have a look at all the intake manifold ducting and make sure nothing is broken and leaking air. Also make sure that all vacuum hoses are fitted tight and correctly and they are not loose, broken or cracked. It will be better to check each by disconnecting, checking and refitting. Let me know how you get on. Have a happy new year. Regards John

Posted on Dec 31, 2012

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It mis firing cyl 2/3/5/7


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2002 elantra cyl 2 random misfire


Hi there:A P0300 diagnostic code indicates a random or multiple misfire. If the last digit is a number other than zero, it corresponds to the cylinder number that is misfiring. A P0302 code, for example, would tell you cylinder number two is misfiring. Unfortunately, a P0300 doesn't tell you specifically which cylinder(s) is/are mis-firing, nor why.

For example, a P0302 code means that the the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #2; same condition in P0301 - cyl #1, P0303 - cyl #3 and P0304 - cyl #4.

A code P0300 (or 301, 302, 303 or 304) may mean that one or more of the following has happened:
Faulty spark plugs or wires
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Burned exhaust valve
Faulty catalytic converter(s)
Stuck/blocked EGR valve / passages
Faulty camshaft position sensor
Defective computer

About your possible solutions, if there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.

If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.

Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or unmetered air getting past the airflow sensor, or an EGR valve that is stuck open.


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Replace the spark plug and if the problem still exsist replace the the ignition wire to the #4 cylinder.

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What is the firing order for 96 chevy cavilier


Hello deniseF37: My name is Roger and I will help you. The fire order for a 2.2 cavalier is 1-3-4-2. The coil placement is enclosed. Should you need further help please just ask. Please rate the answer. This way I know it was helpful. Thank You for using Fix Ya. Roger5935e01.jpg

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Firing order for gmc jimmy 1999


-Drivers side starting at the front of engine: 1-3-5
-Passenger side starting at fornt of engine: 2-4-6
92850034.gif

May 20, 2009 | 1999 GMC Jimmy

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