2001 Chrysler Concorde Engine Light

Tiny
MAGPIEZ
  • MEMBER
  • 2001 CHRYSLER CONCORDE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 133,000 MILES
I'm trying to get my vehicle's inspection done but after taking it to Pep Boys, they told me they can't inspect it as the engine light was on and pulled codes for me. P0171, and P0174. These both relate to the system being too lean, which I'm told means that the engine is getting air from somewhere it shouldn't be. Automatically Pep Boys told me it was a Fuel Pump, but I work with people who are certified mechanics and those codes that are pulled are only saying it's only on Bank 2 that the engine is lean, which could not possibly be the fuel pump since that would show it failing on both cylinder banks. I changed the fuel cap, thinking that maybe the seal was shot, but same thing. The other suggestions, thoughts and options I've looked at are the Mass Air Flow sensor, which it turns out my car doesn't have one. I cleaned the MAP sensor as it was full of grit and it was leaking so I also replaced the O-ring that seals it. I had the codes wiped with a scanner but still the same thing. My O2 sensor was good, and the only other thing I can think of is just looking around for a loose hose or a deteriorated hose.

I need help as soon as possible since my current inspection runs out at the end of this month.

Thank You.
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Sunday, September 19th, 2010 AT 5:23 AM

9 Replies

Tiny
RASMATAZ
  • MEMBER
Hi Magpiez, Welcome to 2carpros and TY for the donation

Lean fuel condition could be caused by one of the following below:

1. Vacuum leaks
2. PCV valve.
3. Low fuel pressure.
4. Dirty fuel injectors.
5. Oxygen Sensor.
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Sunday, September 19th, 2010 AT 5:47 AM
Tiny
MAGPIEZ
  • MEMBER
Thanks for the quick reply. I'm trying to dig around for as much info as possible as I think pep boys just jumped in and wanted the most expensive part replaced.

I've looked at the pcv valve before and it did have a cracked hose that was replaced, and the vacuum was tested by starting engine with hose off. I do use fluids in the gas tanks occasionally to clean the fuel injectors but I'll take a look. I'm checking the car this morning while the engine is cold for worn hoses/possible leaks, but will also look at the fuel pressure. I also forgot to mention that I was having trouble starting the car, about 10-15 seconds before it would start, but after I cleaned the map sensor I now get an instant start.
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Sunday, September 19th, 2010 AT 6:00 AM
Tiny
RASMATAZ
  • MEMBER
Try checking the intake manifold and throttle body if its leaking, also the EGR valve
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Sunday, September 19th, 2010 AT 6:10 AM
Tiny
MAGPIEZ
  • MEMBER
Still can't get rid of this damn engine light. I have removed and checked the PCV valve, works fine, Map sensor has been cleaned. O2 sensors are ok, had the codes wiped, and they stay off until I sit idle at a light and then hit the gas. Some of the sensors and such are hard to look at on this car since the engine seems like it's installed bass ackwards and crammed in. I'm trying to save some money to try and repair this myself as I don't have the cash.
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Monday, September 20th, 2010 AT 4:38 PM
Tiny
2CARPROS LINSEY
  • MEMBER
Hi there, Hope you got your concord fixed. We appreciate your donation and look forward to helping you in the future.
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Thursday, October 7th, 2010 AT 1:08 PM
Tiny
MAGPIEZ
  • MEMBER
Well after numerous testing, back and forth to the mechanic, it turned out to be the fuel pump after all. No more of the above mentioned problems, however, after picking up my car from the fuel pump being replaced, I had a massive coolant line failure and had to have the water bypass pipe assembly replaced due to the old being completely rusted. Now that's been fixed, the card was fine for a weekend of constant driving, but then the engine light came back on and gave me a p0455 code, signalling a large leak in the evap system. The car seems to let out a whistling noise every 2 or 3 seconds first thing in the morning and stops after about 90 seconds, which I've been told could be a solenoid not opening/closing properly. So far the code has been cleared and I'm trying to put the car through numerous drive cycles before the car can be sent for an emissions test but let me tell you, this has been one long, aggravating, and costly experience.
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Thursday, October 7th, 2010 AT 2:27 PM
Tiny
2CARPROS LINSEY
  • MEMBER
Wow! Sometimes when it rains it pours. Im glad to hear you got most of your problems solved. Good luck on passing inspection. Thanks again for using and have a great weekend.
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Friday, October 8th, 2010 AT 12:01 PM
Tiny
MAGPIEZ
  • MEMBER
All good now. Passed emissions and inspection and so far the engine light has stayed off. Something I'll keep an eye out for and I appreciate every bit of advice given here. Thank you.
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Friday, October 8th, 2010 AT 5:56 PM
Tiny
2CARPROS LINSEY
  • MEMBER
Good to hear, Thank you again for using 2carpros. Com. Have a great day!
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Friday, October 8th, 2010 AT 6:05 PM

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