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Exhust cam overtimed for 2008 trailblazer

My check ingine light has come on. Noticed a hesitation "grabbing" at 45mph. A friend used a code reader and it indicated an exhust cam overspeed. What does this mean?

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  • Chevrolet Master
  • 3,679 Answers

Prob a build up in cat converter can cause a back pressure slowing down escape of exhaust gases from engine you can get a catalytic converter cleaner to add to fuel tank ,give it a go as a cheap starting point expect it too take a full tank of fuel before it clears check the instruction on product

Posted on Mar 26, 2014

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6ya6ya
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Posted on Jan 02, 2017

468 Chevelle
  • 81 Answers

SOURCE: Service engine code indicates EGR valve.

You could have a restriction in the egr ports. remove the valve. Plug the holes, start engine. 1 hole will be blowing out exhaust, the other will have large vacuum.

Posted on Mar 28, 2009

  • 1 Answer

SOURCE: speedometer erratic/intermittent

I don't know what is causing this problem, but I know phil140701's answer is completely wrong on two counts. First, 740 Volvos starting at least in 1986 have electronic speedometers and no cable. There is an electronic sensor on the differential which sends a signal to the speedometer cluster. Second, if it were strictly mechanical with a cable then the voltage regulator could have no effect on it at all.

Posted on Sep 01, 2009

  • 1428 Answers

SOURCE: my check engine light came on 2004 ford taurus had

P174 means Oxygen sensor was slow in switching Single, Right or Rear HO2S - Fuel control

P171 means Oxygen sensor not switching - system was at adaptive limits - Single, Right or Rear HO2S - Fuel control

Visit http://www.troublecodes.net/Ford/
for a comprehensive code listing for your car.

Please rate this solution.

Thanks for using Fixya!

Posted on Jan 08, 2010

  • 3640 Answers

SOURCE: car is hesitating have error code p1391 check

p1391 is intermitant loss of signal from crank sensor and cam sensor--change sensors!! change cam sensor first. good luck!! then try it, if still same way. change crank sensor.

Posted on Nov 26, 2010

  • 14036 Answers

SOURCE: the check engine light

CODE PO443 IS EVAP CANISTER PURGE SOLENOID CIRCUIT MALFUNCTION.

Posted on Feb 09, 2011

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hello malcol,

with this type of problem, i think i don't have enough knowledge about it. thank you for asking me and if you want i could refer you to a good friend of mine for more solutions.

his handle is BENIMUR.

try to locate him on the experts directory.

tnx 4 using fixya,

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