Question about GMC Yukon XL

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I just changed the intake manifold gaskets,put everything back together right,marked the distributor while taking out,put back the same way.I fired it up and the Yukon 5.7 has like a rough idle and sort of a hitching under 2500 rpm I hooked a diagnostics tester to it and the code read 1345 and I dont have a guide to identify codes.What do you think???

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Posted on Jan 02, 2017

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SOURCE: intake manifold gasket change

You do not have the dist. in correct or plug wires are crossed. Please check wires 18436572 is firing order.

Posted on Jan 10, 2009

  • 202 Answers

SOURCE: won't start after intake gasket replacement

ase mechanic here. this has happened to me too, try checking your wiring again, it is very easy to mix up the back three cylinders. and on the coil remember number six is the middle coil. from left to right its 523614

Posted on Jan 26, 2009

  • 36 Answers

SOURCE: Rough idle after intake gasket changed

check for vacuum leaks. at idle spray carb cleaner around intake mating surface if idle smooths out you have vacuum leak.

Posted on Sep 27, 2009

  • 1 Answer

SOURCE: 2002 4.3 vortex chevy got a rough idle but smooths

Check the distributor gear. Is it a random misfire code? I am fighting this issue myself. My truck eats up the distributor gear and I get random misfire codes and Cam to Crank positioning sensor codes, all related to timing issues.

Posted on Jul 31, 2010

  • 12 Answers

SOURCE: 01 Kia sportage 4wd, replaced valve cover gasket

The vaccuum line might have come off or may have broke.

Posted on Feb 02, 2011

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You do not have the dist. in correct or plug wires are crossed. Please check wires 18436572 is firing order.

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