My truck is cutting out. Not all the time, just enough to bother me. I have had the intake gasket, spark plugs, fuel pump, rotor bug, distributor and numerous wires changed. I am thinking a vacuum hose or something else simple but i have no clue where to start.
You have described a wide range of possibilities, you may want to start with an air intake sensor which tells the ECU per air/fuel ratio. You may also look at your The Idle Air Control (IAC) valve controls the engine idle speed and dashpot functions. The valve is located on the side of the throttle body. This valve allows the necessary amount of air, as determined by the Powertrain Control Module (PCM) and controlled by a duty cycle signal, to bypass the throttle plate in order to maintain the proper idle speed.
Hope this gives you more direction, and thank you for writing into AskPatty
Really? Your car cuts out, but not all the time... just enough to bother you? Cutting off when your driving is never a good sign in my book.
OK Kathy, I see where your coming from. You have done A LOT of repairs. Your all over the spectrum and your car is still not safe to be on the road. It is too easy to just change parts. Its not cost effective, and not solving your problem. Yes, I can add to this and agree it could be vacuum. It could be. That is not the answer you need. You must start from square one. When did the trouble start? What happens when it cuts off? Does it start right back up? Do you have to wait for it to cool down? Does it only happen in the morning? Or when the car is hot? Is this condition when you have the air conditioner on? If you hold the gas, can you prevent the car from cutting off? Narrow it down. Use the diagnostics and troubleshooting tree in order to save cost, time and grief.
〉 Answered on Dec 21st, 2010 by Audra Fordin, Owner at Great Bear Auto Shop