Question about 2006 GMC Envoy
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Posted on Jan 02, 2017
While engine is running, open the cover where you add oil to engine and see if you see a good flow of oil, if good flow, could be as easy as replacing oil sending sensor. got to realize that if poor maintenance history your engine may not be building enough pressure at iddle to move your hydraulic operated valves, only when you rev it up it will pump enough to run smooth. if running engine too long, you may cause more damage to other engine components such as crankshaft and cam shaft bearings. if you can spare a few bucks, have a good mechanic check your oil pressure with a mechanical gauge. another cheap option is to replace oil pump. last resort if you love your truck as much as we do,replace engine or rebuild it. At 205,000 this is a normal symptom, other than timing chain problems, most engines don't make it that far. hope this helps!
Posted on Mar 01, 2010
low oil,bad oil,or to light of oil
Posted on Mar 14, 2010
Testimonial: "I will change the oil and filter,use a heavy oil.I hope this will save me a great deal of money and time. Thank-you.C.X.G."
Check all grounds ie motor to body ground strap connections for corossion, battery to motor ground, battery to body ground. You have to check under bolt to see if there is coeossion. Bad grounding can cause all sorts of electrical problems
Posted on Jul 30, 2010
Check idle air control system. The system comprises a valve that allow extra air into the engine when the engine is idle. If the valve is stuck, if there is a problem with IAC wiring or solenoid or if the vacuum hose connected to the IAC has a leak you get engine running rough and turning off when idle.
Check air intake and sensor (MAF and AIT). Replace air filter. Air intake problems may result in rich mixture and in engine turning off.
Check EGR and PCV valves. These parts may cause rough idle. When the problem is EGR or PCV you usually get troubles also when driving.
Posted on Dec 15, 2011
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