Why is my V6 engine surging while driving?
V6 engines may experience surging while driving. The condition is more noticeable between 40 and 50 MPH while accelerating up a hill/slight incline. Replacing the powertrain control module (PCM) and updating the transmission control module (TCM) software may be required.
What causes a van to surge at 55 mph?
While driving around 55 mph the RM would surge unexpectedly. We would have to stop the van and wait for 1 minute and start it again and it would run fine. It has been 1000 miles since the last incident. This started happening after the ignition switch was replaced because of the recall.
What causes a car to have an idle surge?
Air Supply A clogged or obstructed air filter can cause surging at idle, and foreign objects can enter the filter housing at any time. Any debris in the filter or housing might restrict air flow to the engine enough to affect idle speeds. Fuel filters can become restricted and deny proper delivery at idle speeds.
What causes the engine speed to go up or down?
The sensor wire (for the power steering pressure) tends to corrode or break loose. The ECU gets confused, and may drive the engine speed up and down (trying to compensate for engine load during power steering operation).
V6 engines may experience surging while driving. The condition is more noticeable between 40 and 50 MPH while accelerating up a hill/slight incline. Replacing the powertrain control module (PCM) and updating the transmission control module (TCM) software may be required.
While driving around 55 mph the RM would surge unexpectedly. We would have to stop the van and wait for 1 minute and start it again and it would run fine. It has been 1000 miles since the last incident. This started happening after the ignition switch was replaced because of the recall.
Why is my car surging at idle speed?
When an engine’s computer can “hunt” or “surge” at cruising or idle speeds it is searching for program compliance, there is a problem elsewhere in the system.
What to do if your Chrysler van surges?
Pull the vac hose and plug/cap. Take the van for a test drive. If the surging goes away, the EGR needs replaced. Apparently crud gets into the EGR valve and prevents proper operation While driving around 55 mph the RM would surge unexpectedly.