need help, car runs really ragged sometimes for the first few minutes after starting

compucarnut

Registered User
91 SC. All stock except for free mods like cold air, and some cheap under drive pulleys. Car will sometimes start up and idle like its running on 3 cylinders, then after driving down the block, it will clear up. Any ideas? It doesn't pull any codes so I'm really frustrated trying to figure it out. New air filter, plugs, wires, ect...
 
Check your MAF sensor to be sure it is not dirty. The two small resistors get dirty and can cause cold start idle problems. The resistors heat up when power is applied. Dirt inhibits the correct heating and subsequently the air flow has to cool the dirt and the resistor. You get the picture.

Ed
 
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