Question about 1989 GMC K1500

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1989 GMC Sierra code 32 "EGR CIRCUIT". Replaced egr valve & solinoid and still getting code. What else could it be?

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  • Zaraki Sep 11, 2010

    Does the engine have a feed back carburetor or is it throttle body injection?

  • Albert Myers
    Albert Myers Sep 14, 2010

    has throttle body injection

  • Zaraki Sep 14, 2010

    Is the exhaust side passageway under the EGR valve good and clear through to the exhaust cross-over in the intake manifold, or is it plugged up with carbon?

  • Albert Myers
    Albert Myers Sep 16, 2010

    no.it is all clear or carbon.

  • Albert Myers
    Albert Myers Sep 16, 2010

    no. It is all clear of carbon.

  • Zaraki Sep 16, 2010

    Check the vacuum line to the MAP sensor for any damage, or if the vacuum line collapses when the engine is running. (Manifold Absolute Pressure)

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6 Suggested Answers

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  • 2 Answers

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Posted on Jan 02, 2017

bibleman01
  • 334 Answers

SOURCE: 02 monte carlo, radom misfires, EGR circuit failure

Does it misfire under load like when you press on the gas peddle after slowing down then accelerate or at idle. When you say spark plug did you mean all the spark plugs?

Posted on Nov 24, 2008

mechanicm639
  • 253 Answers

SOURCE: egr failier,replaced censer and valve what next

Remove the EGR valve and look in the ports in the intake. There is a good chance they are stopped up. Good Luck.

Posted on May 06, 2009

  • 58 Answers

SOURCE: Check Engine code P1409

do you live in an are where the gas has alot of ethenhol? if so you might just have a build up of carbon in the exhaust tubes ie: egr return lines intake and all tubes.

Posted on May 20, 2009

  • 563 Answers

SOURCE: i need to know how to install a egr valve in a 05

Once you are able to identify the EGR, you simply unbolt the valve and ant other obstaructing part. Clean its surface of carbon. Repalce the gasket if worn. Any sticky bolt/nut that you encounter could be removed by spraying some WD-40 around them. Also disconnect the negative wire of the battery first. Diesel do run hot, so get ready for some hard bolts to loosen.

Posted on Oct 21, 2009

moparownr
  • 667 Answers

SOURCE: 1999 FORD EXPEDITION 2WD 4.6L EGR VALVE,EGR

Remove the throttle body housing on the top of the intake, it is a 90 degree tunnel like small piece held by 4 small bolts, turn it over and look for two holes, these holes are for the EGR valve flow, they are probably plugged up with carboned crud, clean them out with the tip of a screwdriver if neccessary to remove all the crud, once its clean reinstall it and reset your check engine light, hope this helps, let me know

Posted on Dec 04, 2009

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What are the probable cause(s) of DTC P1406?


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While you are checking things, make sure the fuel pressure regulator is not leaking or has gas in the vacuum hose that connects to it.

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I have a 99 gmc sierra 6.0(has 189,xxx miles) and I was stalled on hiway today, ran code p0300. had towed home and I replaced egr valve $185. now ran a code P0405 and will start and idle rough and kill...


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Egr failier,replaced censer and valve what next


Remove the EGR valve and look in the ports in the intake. There is a good chance they are stopped up. Good Luck.

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Engine won't idle,


ok code 32 is the EGR (exhaust gas recirculation) this does not mean that the EGR valve is bad right off, check it and see if it is stuck in the open position, remove the vacuum line see if it moves, it should not. It is supposed to open at highway speed to recirculate exhaust gases and burn them, if the valve is stuck open the engine will not idle because it upsets the air mixture too much, if you remove the valve and see its open, then replace it.

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