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2008 gmc canyon will not accelerate over 80 mph

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  • Contributor
  • 17 Answers

With a scanner watch the grams per second on the mass air flow sensor. If you aren't getting close to 180 grams per second of air flow then you probably have a clogged catalytic converter. You can verify this by holding the throttle open and measuring the exhaust temperature in front of the catalytic converter and behind it. A good cat will be hotter at the rear than in the front. A clogged cat will be hotter in the front as the heat cannot escape from the engine.

Posted on Apr 16, 2019

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  • GMC Master
  • 5,110 Answers

Fun a fuel flow test on the fuel system. You may have a restriction in the lines of filter. Also make sure that nothing is blocking the accelerator peddle from opening all the way. Use a scanner and check voltage the throttle body is getting from the sender.

Posted on Apr 16, 2019

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5 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

stanley141
  • 124 Answers

SOURCE: loss of power

please change the fuel filter this will solve the problem

Posted on Jul 21, 2009

  • 5 Answers

SOURCE: Rear Main Oil Seal leak 2008 GMC Canyon

I think this is for an oil level sensor. Should be easy to change , or a shop can do it for a nominal charge. The dealerships will want more.

Posted on Feb 01, 2012

vtu1314
  • 1339 Answers

SOURCE: torque specs for cylinder head bolts on a 2008 gmc canyon 3.7 5 cyl.

https://www.youtube.com/watch?v=tWXZhaAh4uY

Hope this helps

Posted on Dec 17, 2016

dieseltardis
  • 626 Answers

SOURCE: 2008 gmc canyon got an a/c off light.

Hi. There are many reasons for your A/C to shut down. Low refrigerant, faulty pressure switch, wiring, ground or A/C clutch may be to blame. I recommend sending it in for diagnostics. The technician will test your system, add die, check for operation and leaks and let you know what is needed to repair your climate control system. Typically the service is $150. prices do vary but it is the best way to get it done and down quickly. Any questions please write back. Good Luck.

Posted on Oct 10, 2018

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I've gutted all my catalytic converters and car still wont accelerate smoothly or go over 80 mph


gutting the cat converters was not a smart thing to do
the ECM needs feed back from the sensors to regulate the air/fuel mixture and now you expect it to do the job with half the sensors removed
like trying to brush your teeth with no hands
replace the cat converters with new ones then run the fault codes to really find the problem area

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Rear Main Oil Seal leak 2008 GMC Canyon


I think this is for an oil level sensor. Should be easy to change , or a shop can do it for a nominal charge. The dealerships will want more.

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I need a owners manuel fora 2004 gmc canyon


You can download the owners manual for your 2004 GMC Canyon from the following link.(http://www.extendedgmwarranty.com/owners-manual/gmc/2004-GMC-Canyon.pdf ).Your valuable feedback would be appreciated.Thanks for choosing Fixya.

TinuAlbinAlex

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1 Answer

Replace passenger side mirror, power


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