do bad plugs and wires cause a vehicle to run poorly all of the time or part of the time

do bad plugs and wires cause a vehicle to run poorly all of the time or part of the time 1 Answer

Why does my 84 blazer not run well first thing in the morning but after it has been run for a while and kicks out a black smoke from the exhaust it runs fine? 2 Answers

I have a 1984 chevy s10 blazer and It seems like I am having a vacuum problem. The vehicle will not run well first thing in the day and acts like it hardly has any power. Once this happens I stop an...

I have an 86 s10 blazer 4x4 with 2.8 v6 and ive replaced all sensors plugs wires cap and rotor and fuel filter its like it has a mis at low rpms or boggs down going down rd and pedal will be all way 2 1 Answer

The floor...theres no engine lights on or anything...i dunno where to go from here...ive even cleaned the throttle body and such

I dont know what kind of Wire harnesses to buy 1 Answer

I have a 92 st blazer 4 door I want to replace the engine harnesses but dont know the right one to buy any help please

1997's headlights turn off & on with a buzzing in the glove box. 1 Answer

So i start the truck, DRL come on everythings fine... When i turn the headlights on, one of the three relays in the glove box make a loud buzz/ticking noise. After a few minutes, headlights turn off...