Question about 1999 Chrysler 300M

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3.5 backfiring after having my upper plenum on my 99 300m off it won't run right. It backfires through the intake and exhaust. Seems like a vacuum leak because I have no boost for my brakes. All vacuum lines seem in order but I'm stumped as to what the problem is. When I turn the key 3 times the code 1299 appears. Help!!!!!!!!!!!!!!!!

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  • 22 Answers

SOURCE: Ignition key won`t turn on my chrysler cirrus

tap the lock cylender with a small hammer it will free up the tumblers and the insert key and its working again.

Posted on Jan 08, 2009

podbot999
  • 20 Answers

SOURCE: on lpg vehicle backfires and blows intake pipe to pieces

Hi LPG is very dependent apon plugs and lead quality, the first thing to do is replace them both with new, it may very well cure the fault.

Posted on Feb 08, 2009

  • 69 Answers

SOURCE: no power rough idle car stalls strong exhaust smell

have you done a reaaly good tune up on the car? I would suggest replaceing the idle air control valve first, the a really good set of plugs and wires. I would also reccomend that you check the fuel regulator to be certain it is getting the required vacum to operate the release valve and let the fuel flow back into the tank.

Posted on Apr 01, 2009

rsst
  • 175 Answers

SOURCE: I need to remove the upper intake manifold plenum.

There are no fasteners inside the plenum, The electrical connection for the injectors is very tight due to a rubber ring gasket the seals the injector assembly to the plenum. Carefully push down on the electrical assmbly while prying up the plenum. You also may have to remove the thermostat and hose. I've done this 3 times on my ladies 96 Yukon.

Posted on Jul 11, 2009

juncro
  • 467 Answers

SOURCE: i am looking for a 2004 chrysler pacifica upper

CHECK OUT YOUR LOCAL SALVAGE YARD, U WILL SURE TO FIND ONE THERE

Posted on Nov 13, 2009

  • 7353 Answers

SOURCE: very unusally low gas mileage.

There is no code that says " crack in plenum" so what was the code? is the light still on? Was the plenum replaced?

Posted on Mar 13, 2010

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