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P0642 code 2007 ford 500 ltd awd

Constant code p0642 car runs fine in heated garage once in freezing temps starts to run rich black smoke from exhaust finaly floods out and dies what and where is sensor a

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6ya6ya
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Posted on Jan 02, 2017

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chryslertech
  • 115 Answers

SOURCE: Hard start when cold, running rich, poor fuel economy

Chrysler has a bulletin out for a simular condititon that involves replacing the pcm. Heres the bulletin number 18-005-04. This is only 1 possible cause , Fuel pressure, coolant temp sensor, thottle position sensor all can cause like problems. Seeing sensor values and fuel adaptives with a scan tool helps pin point problems.

Posted on Mar 08, 2009

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injectronic
  • 6 Answers

SOURCE: 1993 Hyundai Excel motor runs very rich fuel

sure he has an ecm installed .. its an injection based car.. probably air filter isn't that good .. also check if air intake pass is clear of any wastes

Posted on Jun 27, 2009

SOURCE: 1994 Chevy Astrovan. v6 . Running very rich, black smoke.

If this van uses flow meter? If does, replace it.

Posted on Jul 09, 2009

  • 9 Answers

SOURCE: Black smoke from exhaust,no idle in warm temps-97 Nissan 2WD 2.4L

I had a 1995 nissan pick up with a similar problem, may want to try cleaning out or replacing the EGR valve.

Posted on Jul 23, 2009

66 chrgr
  • 1011 Answers

SOURCE: 1985 ford f150 with 5.0 EFI running very rich

Check you coolant temp sensor ,If it is bad it will be reading{ 40 degrees below zero }and this will cause a rich condition due to the computer thinking it is that could outside, which requires more fuel .:)

Posted on Sep 22, 2009

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1 Answer

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Black smoke means it's running rich, which could be leaky injector(s), bad coolant temps sensor, poor spark, bad plugs, bad fuel pressure regulator, and many others.

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What are the symptoms if my car has a bad engine coolant temp sensor it is a 98 saturn sl1


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Black exhaust smoke comes out of tail pipe, now it wont run how do I fix this and where do i start


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Use cars driver info center to access engine data,scroll thru to engine/coolant temp. If temp is way off, such as you get heat from your vents but engine temp is 50,you have found the cause. coolant temp sensor is the engine computers "choke", rich cold,lean hot, etc.

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