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1994 Chrysler Concorde Poor Ingition Performance

Tiny
STEVEN1957
  • MEMBER
  • 1994 CHRYSLER CONCORDE
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 120,000 MILES
My car started to run rich, hard to start, run rough at highway speed very rich smell at the exhaust and poor fuel economy.
Now the problems are much worse.
I've replaced the injectors and coil pack, no help.
Suggestions?

It has the 3.3 L
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Monday, February 9th, 2009 AT 9:28 PM

3 Replies

Tiny
ZACKMAN
  • MECHANIC
  • 4,202 POSTS
I believe your fuel pressure regulator is faulty. But before you replace that, test your fuel pressure at the rail.
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Monday, February 9th, 2009 AT 11:56 PM
Tiny
STEVEN1957
  • MEMBER
  • 2 POSTS
Fuel pressure was checked: 50 psi at idle, 48 psi when reved up.
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Tuesday, February 10th, 2009 AT 9:25 PM
Tiny
ZACKMAN
  • MECHANIC
  • 4,202 POSTS
***I still believe it is your pressure regulator****

Truncated diagnostic procedure...


https://www.2carpros.com/forum/automotive_pictures/55316_94concordefpress1_1.jpg



https://www.2carpros.com/forum/automotive_pictures/55316_94concordefpress2_1.jpg

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Tuesday, February 10th, 2009 AT 9:57 PM

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