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Automotive Repair Car Troubleshooting Topics   Car Troubleshooting   Engine Troubleshooting   Engine Fault Codes   Electrical and Wiring   Transmission Problems Car Repair Topics   Car Making Noises   Car Stereo Repair   Heating or AC Issues   Motorcycles and ATVs   Tricks of the Trade   Truck Repair Advice Site Options:      Login   Sign up here! Latest Forum Post   Strut spring orientation and strut mount tension nut 2017 Nissan rogue awd 2.5 L Put in Monro...   Transmission stuck in part, I have tried everything So I'm working on my elderly fathers 201...   2017 dodge journey LED headlights on/off randomly Year of vehicle 2017 Make of vehicle dod...   Kia Soul starter replacement issues! Okay so my car is a 2010 Kia soul 2.0 en...   Please Help - Knock sound & engine fail Hi all, Hoping to get some insight and ...   multiple warning lights 2013 GMC Terrain 130,000 miles 4 cylinde...   03 alero no low speed blower Good day everyone, I have a 2003 Olds a...   04 Chevy 2500hd tail light issues Help!!! I have changed my combo switch...   1999 Grand Caravan Sport not starting. Hi. I'm new here. I hope someone can hel... Brake Seals Bulging 2021 Toyota Corolla LE 1.8l 65,000 mile...

rough idle 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 racer2 Novice Jan 21, 2009, 7:30 PM Post #1 of 4 (1389 views) rough idle Sign In 2002 chevy tahoe 4.8 motor durring cold weather when you first start it it want idle at all loads up blowes black smoke out tail pipe after it warms up it will idle but rough now it has started surging when driving. thanks Loren Champlain Sr Veteran / Moderator Jan 21, 2009, 7:39 PM Post #2 of 4 (1388 views) Re: rough idle Sign In Black smoke; Obviously over-fueling. CEL should be illuminated? Several causes. CTS very common failure. Loren SW Washington racer2 Novice Jan 21, 2009, 7:51 PM Post #3 of 4 (1385 views) Re: rough idle Sign In the check light comes on but goes off after a few min i cant check codes for some reason the dealer cant figure out why you cant get the codes what is the part you mentioned Loren Champlain Sr Veteran / Moderator Jan 21, 2009, 8:08 PM Post #4 of 4 (1379 views) Re: rough idle Sign In The dealer can't retrieve the codes? Hmmmmm. The CTS is the coolant temp sensor. GMs default to -41F when they take a dump. This tells the computer that you are in Fairbanks in February, so it dumps fuel. This is only a guess. As I said, there are other causes. Fuel injection leaks into the plenum, MAP sensor, weak secondary ignition. Loren SW Washington   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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