Question about 1994 Chevrolet S-10

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Failed emissions hc high

2.2leter failhcppm and co%

Posted by Anonymous on

5 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

leetamara
  • 702 Answers

SOURCE: my chevy s10 failed emissions

Have your cat. converter checked out. I just had one of these for the same reason in my shop today.

Posted on Jul 09, 2008

  • 400 Answers

SOURCE: 87 chev van 350ci,failed 1 of 4 emissions test(HC

Hydro Carbons are usally from an engine missfire. It may be that it is such a sligh miss that you cannot feel it. What is your timing set at? I would try setting it at 2* advanced and see what that does for you.

Posted on Oct 13, 2009

consaka
  • 661 Answers

SOURCE: failed emissions test.is int.manifold gasket set

Does it have a vacuum leak? If it was that bad it should have thrown a code. That being said the first thing I do with a vehicle that fails emissions is to replace the o2 sensor. o2 sensors start wearing out the day they are put in. Generally I like to replace mine once a year though I know that is a bit of overkill. It does make sure the system is running topnotch. keep in mind my vehicle only has one o2 sensor.

Posted on May 27, 2010

SOURCE: C15001993 truck 4.3 v6 Failed Emissions HIGH CO again

Sounds like you lost O2 Control

Check fuel trim & data with professional
scanner & such

You done as far as working at home, you did all
you can

You have a rich condition (CO)

Seems as though the coolant sensor is not working &
your in open loop

Posted on Mar 05, 2013

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