Anyone who can tell me all the different problems that cause a car to hesitate while accelerating?

this is a problem that i have in two cars...changed plugs in both, wires, even the cat conv in one...those r reasons ive been told cause the car to hesitate. any others? its the hesitation when steppin on the gas pedal, or the car %26quot;shrugs%26quot; when it deccelerates or under sudden acceleration after a constant speed.plz help.Anyone who can tell me all the different problems that cause a car to hesitate while accelerating?I had a similar problem in an old car - it was a timing issue (one of the cylinders was firing late). It continued to happen after replacing the spark plugs, wires, and distributor cap. I had to get the timing belt adjusted by a mechanic.



In theory, you could do this yourself, but you run the risk of seriously screwing up your engine. If the car has more than 60,000-100,000 miles on it, you should have the timing belt replaced altogether. It can be expensive ($500-$600), but worth it to prevent a timing belt failure (throwing a piston while driving will not only ruin your engine, but create an extremely dangerous and potentially life-threatening situation for you and all of the other drivers around you at the time).
Anyone who can tell me all the different problems that cause a car to hesitate while accelerating?
Dirty plugs, bad plug wires, clogged fuel filter, fuel system dirty, problems with ignition timing, problems with ignition system, problems with catalytic converter, problems with auto transmission or torque converter, problems with clutch slippage in manual transmission. bad fuel, water in fuel, extremely dirty air filter.
Anyone who can tell me all the different problems that cause a car to hesitate while accelerating?
Don't make this too complicated. It sounds like a vacuum leak to me. Check the vast array of vacuum hoses and you will find one that is cracked or broken. It is a lean run situation so it may be low fuel pressure or low volume, but I still think it is a vacuum leak.



Check the simplest things first.
Possible reasons are: Change oil, Change or clean Spark Plug, Clutch, Fuel Pump
well if it is a newer car there is probably a free dealer fix for it, they probably just remap the air/fuel maps with a simple plugin into the ecu.