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98 Concorde LXI - Misfires

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  #1  
Old 10-30-2008 | 03:29 PM
manshack_one's Avatar
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Default 98 Concorde LXI - Misfires

Been working on this problem. Here are the codes:

P1389
P1391
P0320
P0340

Have replaced the plugs, cam and crank sensors. Basic problem is this, once car warms up in the morning it begins to stumble and misfire. I can stomp the accelerator once or twice and the engine seems to catch and stops misfiring. Will not go over 3K rpms in park or on the highway. Had the cat's tested and they're ok. replaced the ASD relay with a working one and problem persists. Car will run fine after stomping the accelerator until I stop and it cools off then it does the same process all over again.If it sits for an hour it does it again sooner, if it sits all day and cools completely then it's the same as in the morning.
 
  #2  
Old 10-30-2008 | 06:25 PM
CHRYSLER TECH's Avatar
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From: Norcross GA
Default RE: 98 Concorde LXI - Misfires

P340 1/2 RIGHT BANK DOWN Stream o2 short to voltage
o2 sensor,wire issue pcm issue
did u even look up the code b4 u started to throw parts at it?

I dont have a reference to a 320,1389 or 1391 what motor size as well.
 
  #3  
Old 10-30-2008 | 10:58 PM
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Default RE: 98 Concorde LXI - Misfires

3.2L engine.

The first code I got was the 340 and everything I've read says that deals with the cam sensor and not the 02 sensor. I've googled the code and it's listed in my chilton manual as a cam sensor issue. that's why i replaced that part. 320 is the crank sensor and so i replaced it as well. the 1398 and 1391 say that it basically doesn't see either the cam/crank sensor at the pcm and that it doesn't see the asd output voltage at z1 or z2. I have no idea what z1 or z2 mean. what are you looking at that says 340 is an o2 sensor?
 
  #4  
Old 11-01-2008 | 11:47 PM
CHRYSLER TECH's Avatar
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From: Norcross GA
Default RE: 98 Concorde LXI - Misfires

NO CAM SIGNAL AT PCM (OBD II) I was using a 2.7 that's why I asked the engine size.
if u have replaced both cam and crank with dealer sensors then time to get the volt meter out U will have with the key on
an 8v 5v and ground see if u are missing any of those.
 
  #5  
Old 11-03-2008 | 09:35 AM
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Default RE: 98 Concorde LXI - Misfires

Okay, I'll bite.

Why does it have to be a dealer sensor versus one from Autozone?
 
  #6  
Old 11-10-2008 | 02:09 PM
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Default RE: 98 Concorde LXI - Misfires

??
 
  #7  
Old 01-08-2009 | 09:58 AM
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Default RE: 98 Concorde LXI - Misfires

Just to update this issue.

I finally purchased a cam position sensor from the dealer and put it on last night. At first the car ran smooth but when pressured to go past 3K rpms it first kicked out a 1391 then a few minutes later it kicked out the same cam position sensor code. I guess I'm going to have to bite the bullet and take this in to the dealership.

Last night I cleared the codes and left it until this morning. On the way though it sputtered and coughed, I floored it once to clear it, then it runs fine again but won't go past 3K rpms. I'm thinking the computer is putting it into the limp home mode after it sputters and I floor it. I do hear a ding at the moment right after flooring it. It's a strange problem.

If I could afford the trip to GA I'd bring it to you Chrysler Tech. It's a problem I can work around because even after tripping the computer into limp home mode because of the sputtering I can still get up to highway speeds because the 3K rpms aren't reached until about 85 mph. I only need 70 mph so I guess I'll just live with it. I just hate it because I know it's something simple. I just can't stand paying a dealer 2 or 3 hundred bucks to tell mea vaccuum hose was loose or something.
 
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