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2002 suburban Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Automotive Repair>> Engine Troubleshooting carlos New User Jun 19, 2009, 2:56 PM Post #1 of 5 (1748 views) 2002 suburban Sign In I have a 2002 Chev.Suburban1500 W/5.3 F.I.v8. It has aprox.85,000 mi. The problem I'm having is moderate hesitation during Ideling to extrem hesitation during acceleration to the point of stalling. I've replaced the fule filter but it hase'nt helped mutch.PS this is a farily resent problem. I'm thinking it mite be the EGR valve. What do you think? Sidom Veteran / Moderator Jun 19, 2009, 4:38 PM Post #2 of 5 (1735 views) Re: 2002 suburban Sign In An EGR problem you would notice more @ Idle than on acceleration. Is your check engine light on? If so that would be a good place to start, see what code it's giving you.... stoli1979 User Jun 20, 2009, 4:26 AM Post #3 of 5 (1732 views) Re: 2002 suburban Sign In has the truck had a tune up yet? A bad plug wire could cause rough idle and get worse on acceleration. Tom Greenleaf Ultimate Carjunky / Moderator Jun 21, 2009, 10:07 PM Post #4 of 5 (1717 views) Re: 2002 suburban Sign In Doesn't this engine put a coil on top of each plug - meaning no traditional plug wires? T Hammer Time Ultimate Carjunky / Moderator Jun 21, 2009, 11:13 PM Post #5 of 5 (1713 views) Re: 2002 suburban Sign In Even the coil on plug systems still use a plug wire on these. This sounds more like a problem with the Mass Air Flow sensor. Sometimes you can try unplugging it and let it go to default settings and see if it runs better to determine if the sensor is at fault. The fuel pressure is the other thing you want to check. A loss of just a couple pounds of pressure can do that also. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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