Results 1 to 5 of 5
Thread: 2003 Suburban - Low Idle issues
02-23-2013, 11:29 PM #1
- Join Date
- Feb 2013
2003 Suburban - Low Idle issues
Ok, I'm at my wits end. Here are the details:
Bottom Line UP Front: I cannot resolve low idle issues -- 2003 Suburban 1500 KT Flex Fuel
I have done the following:
--> Replaced Air Filter
--> Replaced the MAF Sensor
--> Replaced all plugs and wires
--> Replaced Fuel Pressure Regulator
--> Replaced Throttle Body Intake [TBI] (a.k.a Air Intake Manifold) - TPS is included in unit
--> Replaced TBI gasket***
--> Cleaned as much of the air intake system as I could
*** I replaced the TBI gasket after getting engine code P0171 and P0174 - System Too Lean (bank 1 and bank 2, respectively). I have cleared the code and it does not come back up; however, I still have idle issues.
- After initial start, approximately one minute (or less) the engine begins to idle low, rough and sporadic - but not to the point of stalling. Driving for approximately 5 - 10 minutes to warm engine to 180+ degrees, the idle roughness is significantly lessoned at stops. When in park, after driving and truck at operating temp, it takes about 30 sec to a minute when some rough idling occurs.
I do not get any codes that indicate cylinders misfiring but I do not know if this could be an injector circuit malfunctioning or some or related issue.
Any thoughts or insight would be GREATLY appreciated!
By ElbowJoe in forum General Chevy & GM Tech QuestionsReplies: 7Last Post: 09-17-2012, 08:51 AM
By k9ulan in forum Chevy C/K Truck ForumReplies: 5Last Post: 05-23-2012, 03:47 PM
By ElbowJoe in forum GM PowertrainReplies: 6Last Post: 02-01-2011, 11:16 AM
By BigRed2500 in forum Performance & FuelReplies: 0Last Post: 08-29-2008, 10:07 AM
By trivers in forum Chevy Suburban Forum (GMC Yukon XL)Replies: 13Last Post: 11-17-2007, 01:39 PM