Question about 1999 Dodge Durango

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Hesitation while accelerating

Usually when come off a stop while accelerating gets sluggish and has a brief hesitation in power.

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The following are the general instructions on the start of diagnosing any electronically controlled engine or transmission problem.

The engine and the automatic transmission (transmission control is only for automatics, engine is still computer controlled no matter the transmission type) in this vehicle are computer controlled and in most cases when a fault occurs a fault code is stored in the memory of the computer control module. There are exception to this, such as the Mass Airflow Meter and fuel pressure problems. What must be done is to have all the basic testing done such as a scan of the system for fault codes as well as a check with a live data scanner tool for engine functions that are not within range of normal, a trained technician is required to know what is correct and what isn't, then based on careful diagnostics done from a factory repair manual the correct part is replaced or the wiring repaired or the computer replaced (known as the PCM), which is very rarely the problem. Other basic checks must be done as well such as mechanical problems with the engine as well as engine state of tune and mileage on the engine. The transmission can have mechanical issues as well such as no gear engagement at all or a failed pump or other pressure related problems. Also engine mechanical problems can and do cause many drive-ability related problem such as rough idle and other symptoms.

Posted on Oct 26, 2012

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I'm not there in person to see specifically what's going on underneath the hood, though I can tell that there are six (6) common causes of a car's hesitation as you accelerate, and they include the following: 1) EC system malfunction; 2) EGR system malfunction; 3) accelerator pump malfunction; 4) carburetor float malfunction; 5) vacuum hose damage; or 6) engine gasket damage. All of these are explained very well in a very handy diagnostic article at the following link:
http://yourhandymanzone.com/Your_Handyman_Zone_How_To_Pages_Vehicle_Car_Zone_Cars_Trucks_Vans_Engine_System_Engine_Hesitates_When_Accelerating.htm

Eliminate these probable causes, one by one, and you'll find your applicable hesitation cause. This should definitely help you solve your problem. Good luck! Brad

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