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1999 Dodge Intrepid - Cylinder Misfire
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jluebs
New User
Apr 14, 2011, 6:01 AM
Post #1 of 12
(8264 views)
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1999 Dodge Intrepid - Cylinder Misfire
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Hello,
I have a 1999 Dodge Intrepid 2.7L with 213,000 miles. Engine codes say P0300,P0302,P0304 - Random misfire, Cylinders 2 & 4 misfiring. Since this happened, my mileage is AWFUL, about half of what it used to be. My check engine light constantly flashes, then dings and goes solid, then starts flashing again. The engine runs rough and takes a while to turn over and sometimes kills when parking or when first pulling out of a parking spot.
Here is what I've done:
Replaced spark plugs
Replaced map sensor
Replaced coil packs
Replaced hose coming out of engine that had a crack in it
Tested pressure/vacuum in each cylinder, tested normal
Any ideas? My last resort is to bring it into a shop because I don't have the money right now, but eventually I might have to. Would rather do it myself!
Thanks in advance!
Jay
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Hammer Time
Ultimate Carjunky
/ Moderator
Apr 14, 2011, 6:24 AM
Post #2 of 12
(8257 views)
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Re: 1999 Dodge Intrepid - Cylinder Misfire
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What were the compression reading for all cylinders?
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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jluebs
New User
Apr 14, 2011, 7:34 AM
Post #3 of 12
(8247 views)
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Re: 1999 Dodge Intrepid - Cylinder Misfire
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I'm not sure... My stepdad did it for me and said that they tested normal... =/
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Hammer Time
Ultimate Carjunky
/ Moderator
Apr 14, 2011, 7:37 AM
Post #4 of 12
(8243 views)
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Re: 1999 Dodge Intrepid - Cylinder Misfire
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That would be his opinion. We would need to know the numbers.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Apr 14, 2011, 10:14 PM
Post #5 of 12
(8224 views)
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Re: 1999 Dodge Intrepid - Cylinder Misfire
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'Cmom Hammer - where's the company issued crystal ball?
T
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jluebs
New User
Apr 15, 2011, 3:56 PM
Post #6 of 12
(8206 views)
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Re: 1999 Dodge Intrepid - Cylinder Misfire
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I asked and he said the bad cylinders were at 150. Didn't test the good ones.
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Hammer Time
Ultimate Carjunky
/ Moderator
Apr 15, 2011, 4:24 PM
Post #7 of 12
(8202 views)
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Re: 1999 Dodge Intrepid - Cylinder Misfire
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You may have some plugged or bad injectors. You would have to use a scan tool and do an injector balance test.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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nickwarner
Veteran
/ Moderator
Apr 16, 2011, 12:32 AM
Post #8 of 12
(8182 views)
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Re: 1999 Dodge Intrepid - Cylinder Misfire
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With HT on this one. To diagnose this properly would require professional scan tools. Yes, I know its going to cost some money to have a pro look at this. However, there is a reason for this. A year ago I upgraded my scan tool to a model that can keep up with late model cars. It cost me $4000. Within 6 years (I hope that long) it may become obsolete and I will be out even more money to keep on top of technology that the car companies develop. It costs mechanics to continue to be trained on the latest things the manufacturers are coming out with and the way that it needs to be worked with the prevent costly damage. Most experienced techs own a toolset ranging in cost from $40,000-$100,000+. We work with this every day and know what to look for. While an upfront cost for a pro to diagnose this may seem too much, call your local parts house and see what that list of parts you mentioned costs. There are a lot of people literally throwing parts at their cars and still not fixing the problem. They spend hundreds in parts versus spending much less to have it looked at with a knowing eye and tools you would need to refinance your home to have. All of us that are regulars here currently do or have done this as a living. We are always willing to help with our advice that is normally billed at our shops and make absolutely nothing if you fix it yourself or go to a shop. What we want is to see your car back on the road at the least possible expense. In this case, its time to have a pro look at it. If you don't want to pay for the repair that he diagnoses and feel you are up to the task and have the proper tools to do the job, by all means pay him for his diagnosis and do the repair yourself. But you will find yourself both time and money ahead and save a lot of trouble with damage to components by getting on top of this right away with the paid help of a reputable shop. Best luck to you in this from all of us here.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Apr 21, 2011, 3:06 AM
Post #9 of 12
(8140 views)
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Re: 1999 Dodge Intrepid - Cylinder Misfire
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Late with this - not new just me. Great to see you Nick and more power to to you!
Tom Greenleaf
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peping
New User
Apr 6, 2012, 4:21 AM
Post #10 of 12
(6880 views)
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Re: 1999 Dodge Intrepid - Cylinder Misfire
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Had the same prob on 2000 Intrepid 2.7, P300 random multiple engine misfire, replaced plugs & coils. Problem solved by using ethanol free gas.
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Hammer Time
Ultimate Carjunky
/ Moderator
Apr 6, 2012, 5:30 AM
Post #11 of 12
(6873 views)
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Re: 1999 Dodge Intrepid - Cylinder Misfire
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This question is a year old. Please don't respond to old threads.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Apr 6, 2012, 7:27 AM
Post #12 of 12
(6864 views)
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Re: 1999 Dodge Intrepid - Cylinder Misfire
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peping: Site is open to all and we know search engines lead you to your model of car. It's plain rude to ask the regular techs here to re-read a whole thread when you or anyone comes by and says something like "it's just like that" bullcrap. Rude is rude and will be treated as such.
I endorse all moderators to stop that crap in it's tracks which this post has been. That applied long before computer anything but common sense should still prevail and apparently was lost somewhere in cyberspace.
Not my site even if I've been here a while or sign up would mandate that you would understand how to make a post and proper protocol thereof.
When you jump on an existing thread not related to the original poster you just sent a notice of a reply made to that person or anyone who hasn't assertively stopped watching it forever and that's rude and hurts the site.
If you don't possess some common sense please just go harass some other site as you won't get away with it here!
Tom
(you won't be able to respond now but should be able to read this)
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